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Wiki source code of 06 Operation

Version 51.18 by Stone Wu on 2022/07/07 10:23
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1 = **Basic settings** =
2
3 == **Check before operation** ==
4
5 |=(% scope="row" %)**No.**|=**Content**
6 |=(% colspan="2" %)Wiring
7 |=1|The main circuit input terminals (L1, L2 and L3) of servo drive must be properly connected.
8 |=2|The main circuit output terminals (U, V and W) of servo drive and the main circuit cables (U, V and W) of servo motor must have the same phase and be properly connected.
9 |=3|The main circuit power input terminals (L1, L2 and L3) and the main circuit output terminals (U, V and W) of servo drive cannot be short-circuited.
10 |=4|The wiring of each control signal cable of servo drive is correct: The external signal wires such as brake and overtravel protection have been reliably connected.
11 |=5|Servo drive and servo motor must be grounded reliably.
12 |=6|When using an external braking resistor, the short wiring between drive C and D must be removed.
13 |=7|The force of all cables is within the specified range.
14 |=8|The wiring terminals have been insulated.
15 |=(% colspan="2" %)Environment and Machinery
16 |=1|There is no iron filings, metal, etc. that can cause short circuits inside or outside the servo drive.
17 |=2|The servo drive and external braking resistor are not placed on combustible objects.
18 |=3|The installation, shaft and mechanical structure of the servo motor have been firmly connected.
19
20 Table 6-1 Check contents before operation
21
22 == **Power-on** ==
23
24 **(1) Connect the main circuit power supply**
25
26 After power on the main circuit, the bus voltage indicator shows no abnormality, and the panel display "rdy", indicating that the servo drive is in an operational state, waiting for the host computer to give the servo enable signal.
27
28 If the drive panel displays other fault codes, please refer to __[[“10 Faults>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/10%20Malfunctions/]]__” to analyze and eliminate the cause of the fault.
29
30 **(2) Set the servo drive enable (S-ON) to invalid (OFF)**
31
32 == **Jog operation** ==
33
34 Jog operation is used to judge whether the servo motor can rotate normally, and whether there is abnormal vibration and abnormal sound during rotation. Jog operation can be realized in two ways, one is panel jog operation, which can be realized by pressing the buttons on the servo panel. The other is jog operation through the host computer debugging platform.
35
36 **(1) Panel jog operation**
37
38 Enter “P10-01” by pressing the key on the panel. After pressing “OK”, the panel will display the current jog speed. At this time, you can adjust the jog speed by pressing the "up" or "down" keys; After adjusting the moving speed, press "OK", and the panel displays "JOG" and is in a flashing state. Press "OK" again to enter the jog operation mode (the motor is now powered on!). Long press the "up" and "down" keys to achieve the forward and reverse rotation of the motor. Press "Mode" key to exit the jog operation mode. For operation and display, please refer to __[["5.3.2. Jog operation">>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/05%20Panel/#HJogoperation]]__.
39
40 **(2) Jog operation of servo debugging platform**
41
42 Open the jog operation interface of the software “Wecon SCTool”, set the jog speed value in the "set speed" in the "manual operation", click the "servo on" button on the interface, and then achieve the jog forward and reverse function through the "forward rotation" or "Reverse" button on the interface. After clicking the "Servo off" button, the jog operation mode is exited. The related function codes are shown below.
43
44
45
46 |=(% scope="row" %)**Function code**|=**Name**|=(((
47 **Setting method**
48 )))|=(((
49 **Effective time**
50 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
51 |=P10-01|JOG speed|(((
52 Operation setting
53 )))|(((
54 Effective immediately
55 )))|100|0 to 3000|JOG speed|rpm
56
57 Table 6-2 JOG speed parameter
58
59 == **Rotation direction selection** ==
60
61 By setting the “P00-04” rotation direction, you could change the rotation direction of the motor without changing the polarity of the input instruction. The function code is shown in below.
62
63
64 |=(% scope="row" %)**Function code**|=**Name**|=**Setting method**|=Effective time|=**Default value**|=**Range**|=**Definition**|=**Unit**
65 |=P00-04|Rotation direction|(((
66 Shutdown setting
67 )))|(((
68 Effective immediately
69 )))|0|0 to 1|(((
70 Forward rotation: Face the motor shaft to watch
71
72 0: standard setting (CW is forward rotation)
73
74 1: reverse mode (CCW is forward rotation)
75 )))|-
76
77 Table 6-3 Rotation direction parameters** **
78
79 == **Braking resistor** ==
80
81 The servo motor is in the generator state when decelerating or stopping, the motor will transfer energy back to the drive, which will increase the bus voltage. When the bus voltage exceeds the braking point, The drive can consume the feedback energy in the form of thermal energy through the braking resistor. The braking resistor can be built-in or externally connected, but it cannot be used at the same time. When selecting an external braking resistor, it is necessary to remove the short link on the servo drive.
82
83 The basis for judging whether the braking resistor is built-in or external.
84
85 1. the maximum brake energy calculated value > the maximum brake energy absorbed by capacitor, and the brake power calculated value ≤ the built-in braking resistor power, use the built-in braking resistor.
86 1. the maximum brake energy calculated value > the maximum brake energy absorbed by capacitor, and the brake power calculated value > the built-in braking resistor power, use external braking resistor.
87
88 |=(% scope="row" %)**Function code**|=**Name**|=(((
89 **Setting method**
90 )))|=(((
91 **Effective time**
92 )))|=**Default**|=**Range**|=**Definition**|=**Unit**
93 |=P00-09|Braking resistor setting|(((
94 Operation setting
95 )))|(((
96 Effective immediately
97 )))|0|0 to 3|(((
98 0: use built-in braking resistor
99
100 1: use external braking resistor and natural cooling
101
102 2: use external braking resistor and forced air cooling; (cannot be set)
103
104 3: No braking resistor is used, it is all absorbed by capacitor.
105 )))|-
106 |=(% colspan="8" %)✎**Note: **VD2-010SA1G and VD2F-010SA1P drives have no built-in resistor by default, so the default value of the function code “P00-09” is 3 (No braking resistor is used, it is all absorbed by capacitor).
107 |=P00-10|External braking resistor value|(((
108 Operation setting
109 )))|(((
110 Effective immediately
111 )))|50|0 to 65535|It is used to set the external braking resistor value of a certain type of drive.|Ω
112 |=P00-11|External braking resistor power|(((
113 Operation setting
114 )))|(((
115 Effective immediately
116 )))|100|0 to 65535|It is used to set the external braking resistor power of a certain type of drive.|W
117
118 Table 6-4 Braking resistor parameters
119
120 == **Servo operation** ==
121
122 **(1) Set the servo enable (S-ON) to valid (ON)**
123
124 The servo drive is in a running state and displays "run", but because there is no instruction input at this time, the servo motor does not rotate and is locked.
125
126 S-ON can be configured and selected by the DI terminal function selection of the function code "DIDO configuration".
127
128 **(2) Input the instruction and the motor rotates**
129
130 Input appropriate instructions during operation, first run the motor at a low speed, and observe the rotation to see if it conforms to the set rotation direction. Observe the actual running speed, bus voltage and other parameters of the motor through the host computer debugging platform. According to [[__"7 Adjustment"__>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/07%20Adjustments/]], the motor could work as expected.
131
132 **(3) Timing diagram of power on**
133
134
135 [[image:image-20220608163014-1.png]]
136
137 Figure 6-1 Timing diagram of power on
138
139 == **Servo shutdown** ==
140
141 According to the different shutdown modes, it could be divided into free shutdown and zero speed shutdown. The respective characteristics are shown in __[[Table 6-5>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HServoshutdown]]__. According to the shutdown status, it could be divided into free running state and position locked, as shown in __[[Table 6-6>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HServoshutdown]]__.
142
143
144 |=(% scope="row" %)Shutdown mode|=Shutdown description|=Shutdown characteristics
145 |=Free shutdown|Servo motor is not energized and decelerates freely to 0. The deceleration time is affected by factors such as mechanical inertia and mechanical friction.|Smooth deceleration, small mechanical shock, but slow deceleration process.
146 |=Zero-speed shutdown|The servo drive outputs reverse braking torque, and the motor quickly decelerates to zero-speed.|Rapid deceleration with mechanical shock, but fast deceleration process.
147
148 Table 6-5 Comparison of two shutdown modes
149
150
151 |=(% scope="row" %)**Shutdown status**|=**Free operation status**|=**Position locked**
152 |=Characteristics|After the motor stops rotating, it is power-off, and the motor shaft can rotate freely.|After the motor stops rotating, the motor shaft is locked and could not rotate freely.
153
154 Table 6-6 Comparison of two shutdown status
155
156 **(1) Servo enable (S-ON) OFF shutdown**
157
158 The related parameters of the servo OFF shutdown mode are shown in the table below.
159
160
161 |=(% scope="row" %)**Function code**|=**Name**|=(((
162 **Setting method**
163 )))|=(((
164 **Effective time**
165 )))|=(((
166 **Default value**
167 )))|=**Range**|=**Definition**|=**Unit**
168 |=P00-05|Servo OFF shutdown|(((
169 Shutdown
170
171 setting
172 )))|(((
173 Effective
174
175 immediately
176 )))|0|0 to 1|(((
177 0: Free shutdown, and the motor shaft remains free status.
178
179 1: Zero-speed shutdown, and the motor shaft remains free status.
180 )))|-
181
182 Table 6-7Table 6-1 Servo OFF shutdown mode parameters details
183
184 **(2) Emergency shutdown**
185
186 It is free shutdown mode at present, and the motor shaft remains in a free state. The corresponding configuration and selection could be selected through the DI terminal function of the function code "DIDO configuration".
187
188 **(3) Overtravel shutdown**
189
190 Overtravel means that the movable part of the machine exceeds the set area. In some occasions where the servo moves horizontally or vertically, it is necessary to limit the movement range of the workpiece. The overtravel is generally detected by limit switches, photoelectric switches or the multi-turn position of the encoder, that is, hardware overtravel or software overtravel.
191
192 Once the servo drive detects the action of the limit switch signal, it will immediately force the speed in the current direction of rotation to 0 to prevent it from continuing, and it will not be affected for reverse rotation. The overtravel shutdonw is fixed at zero speed and the motor shaft remains locked.
193
194 The corresponding configuration and selection could be selected through the DI terminal function of the function code "DIDO configuration". The default function of DI3 is POT and DI4 is NOT, as shown in the table below.
195
196
197 |=(% scope="row" %)**Function code**|=**Name**|=(((
198 **Setting method**
199 )))|=(((
200 **Effective time**
201 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
202 |=P06-08|DI_3 channel function selection|Operation setting|Power-on again|3|0 to 32|(((
203 0: OFF (not used)
204
205 01: S-ON servo enable
206
207 02: A-CLR fault and Warning Clear
208
209 03: POT forward drive prohibition
210
211 04: NOT Reverse drive prohibition
212
213 05: ZCLAMP Zero speed
214
215 06: CL Clear deviation counter
216
217 07: C-SIGN Inverted instruction
218
219 08: E-STOP Emergency stop
220
221 09: GEAR-SEL Electronic Gear Switch 1
222
223 10: GAIN-SEL gain switch
224
225 11: INH Instruction pulse prohibited input
226
227 12: VSSEL Vibration control switch input
228
229 13: INSPD1 Internal speed instruction selection 1
230
231 14: INSPD2 Internal speed instruction selection 2
232
233 15: INSPD3 Internal speedinstruction selection 3
234
235 16: J-SEL inertia ratio switch (not implemented yet)
236
237 17: MixModesel mixed mode selection
238
239 20: Internal multi-segment position enable signal
240
241 21: Internal multi-segment position selection 1
242
243 22: Internal multi-segment position selection 2
244
245 23: Internal multi-segment position selection 3
246
247 24: Internal multi-segment position selection 4
248
249 Others: reserved
250 )))|-
251 |=P06-09|DI_3 channel logic selection|Operation setting|(((
252 Effective immediately
253 )))|0|0 to 1|(((
254 DI port input logic validity function selection.
255
256 0: Normally open input. Active low level (switch on);
257
258 1: Normally closed input. Active high level (switch off);
259 )))|-
260 |=P06-10|DI_3 input source selection|Operation setting|(((
261 Effective immediately
262 )))|0|0 to 1|(((
263 Select the DI_3 port type to enable
264
265 0: Hardware DI_3 input terminal
266
267 1: virtual VDI_3 input terminal
268 )))|-
269 |=P06-11|DI_4 channel function selection|(((
270 Operation setting
271 )))|(((
272 again Power-on
273 )))|4|0 to 32|(((
274 0 off (not used)
275
276 01: SON Servo enable
277
278 02: A-CLR Fault and Warning Clear
279
280 03: POT Forward drive prohibition
281
282 04: NOT Reverse drive prohibition
283
284 05: ZCLAMP Zero speed
285
286 06: CL Clear deviation counter
287
288 07: C-SIGN Inverted instruction
289
290 08: E-STOP Emergency shutdown
291
292 09: GEAR-SEL Electronic Gear Switch 1
293
294 10: GAIN-SEL gain switch
295
296 11: INH Instruction pulse prohibited input
297
298 12: VSSEL Vibration control switch input
299
300 13: INSPD1 Internal speed instruction selection 1
301
302 14: INSPD2 Internal speed instruction selection 2
303
304 15: INSPD3 Internal speed instruction selection 3
305
306 16: J-SEL inertia ratio switch (not implemented yet)
307
308 17: MixModesel mixed mode selection
309
310 20: Internal multi-segment position enable signal
311
312 21: Internal multi-segment position selection 1
313
314 22: Internal multi-segment position selection 2
315
316 23: Internal multi-segment position selection 3
317
318 24: Internal multi-segment position selection 4
319
320 Others: reserved
321 )))|-
322 |=P06-12|DI_4 channel logic selection|Operation setting|(((
323 Effective immediately
324 )))|0|0 to 1|(((
325 DI port input logic validity function selection.
326
327 0: Normally open input. Active low level (switch on);
328
329 1: Normally closed input. Active high level (switch off);
330 )))|-
331 |=P06-13|DI_4 input source selection|Operation setting|(((
332 Effective immediately
333 )))|0|0 to 1|(((
334 Select the DI_4 port type to enable
335
336 0: Hardware DI_4 input terminal
337
338 1: virtual VDI_4 input terminal
339 )))|-
340
341 Table 6-8 DI3 and DI4 channel parameters
342
343 **(4) Malfunction shutdown**
344
345 When the machine fails, the servo will perform a fault shutdown operation. The current shutdown mode is fixed to the free shutdown mode, and the motor shaft remains in a free state.
346
347 == **Brake device** ==
348
349 The brake is a mechanism that prevents the servo motor shaft from moving when the servo drive is in a non-operating state, and keeps the motor locked in position, so that the moving part of the machine will not move due to its own weight or external force.
350
351
352 |(((
353 [[image:image-20220611151617-1.png]]
354 )))
355 |(((
356 ✎The brake device is built into the servo motor, which is only used as a non-energized fixed special mechanism. It cannot be used for braking purposes, and can only be used when the servo motor is kept stopped;
357
358 ✎ After the servo motor stops, turn off the servo enable (S-ON) in time;
359
360 ✎The brake coil has no polarity;
361
362 ✎When the brake coil is energized (that is, the brake is open), magnetic flux leakage may occur at the shaft end and other parts. If users need to use magnetic sensors and other device near the motor, please pay attention!
363
364 ✎When the motor with built-in brake is in operation, the brake device may make a clicking sound, which does not affect the function.
365 )))
366
367 **(1) Wiring of brake device**
368
369 The brake input signal has no polarity. You need to prepare a 24V power supply. The standard connection of brake signal BK and brake power supply is shown in the figure below. (take VD2B servo drive as example)
370
371
372 [[image:image-20220608163136-2.png]]
373
374 Figure 6-2 VD2B servo drive brake wiring
375
376
377 |(((
378 [[image:image-20220611151642-2.png]]
379 )))
380 |(((
381 ✎The length of the motor brake cable needs to fully consider the voltage drop caused by the cable resistance, and the brake operation needs to ensure that the voltage input is 24V.
382
383 ✎It is recommended to use the power supply alone for the brake device. If the power supply is shared with other electrical device, the voltage or current may decrease due to the operation of other electrical device, which may cause the brake to malfunction.
384
385 ✎It is recommended to use cables above 0.5 mm².
386 )))
387
388 **(2) Brake software setting**
389
390 For a servo motor with brake, one DO terminal of servo drive must be configured as function 141 (BRK-OFF, brake output), and the effective logic of the DO terminal must be determined.
391
392 Related function code is as below.
393
394
395 |=(% scope="row" %)**DO function code**|=**Function name**|=**Function**|=(((
396 **Effective time**
397 )))
398 |=144|(((
399 BRK-OFF Brake output
400 )))|Output the signal indicates the servo motor brake release|Power-on again
401
402 Table 6-2 Relevant function codes for brake setting
403
404
405 |=(% scope="row" %)**Function code**|=**Name**|=(((
406 **Setting method**
407 )))|=(((
408 **Effective time**
409 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
410 |=P1-30|Delay from brake output to instruction reception|(((
411 Operation setting
412 )))|Effective immediately|250|0 to 500|Set delay that from the brake (BRK-OFF) output is ON to servo drive allows to receive input instruction. When brake output (BRK-OFF) is not allocated, the function code has no effect.|ms
413 |=P1-31|In static state, delay from brake output OFF to the motor is power off|(((
414 Operation setting
415 )))|Effective immediately|150|1 to 1000|When the motor is in a static state, set the delay time from brake (BRK-OFF) output OFF to servo drive enters the non-channel state. When the brake output (BRK-OFF) is not allocated, this function code has no effect.|ms
416 |=P1-32|Rotation status, when the brake output OFF, the speed threshold|(((
417 Operation setting
418 )))|Effective immediately|30|0 to 3000|(((
419 When the motor rotates, the motor speed threshold when the brake (BRK-OFF) is allowed to output OFF.
420
421 When the brake output (BRK-OFF) is not allocated, this function code has no effect.
422 )))|rpm
423 |=P1-33|Rotation status, Delay from servo enable OFF to brake output OFF|(((
424 Operation setting
425 )))|Effective immediately|500|1 to 1000|(((
426 When the motor rotates, the delay time from the servo enable (S-ON) OFF to the brake (BRK-OFF) output OFF is allowed.
427
428 When brake output (BRK-OFF) is not allocated, this function code has no effect.
429 )))|ms
430
431 Table 6-9 Brake setting function codes
432
433 According to the state of servo drive, the working sequence of the brake mechanism can be divided into the brake sequence in the normal state of the servo drive and the brake sequence in the fault state of the servo drive.
434
435 **(3) Servo drive brake timing in normal state**
436
437 The brake timing of the normal state could be divided into: the servo motor static (the actual speed of motor is lower than 20 rpm) and servo motor rotation(the actual speed of the motor reaches 20 and above).
438
439 1) Brake timing when servo motor is stationary
440
441 When the servo enable changes from ON to OFF, if the actual motor speed is lower than20 rpm, the servo drive will act according to the static brake sequence. The specific sequence action is shown in __[[Figure 6-3>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608163304-3.png?rev=1.1]]__
442
443
444 |(((
445 [[image:image-20220611151705-3.png]]
446 )))
447 |(((
448 ✎After the brake output is from OFF to ON, within P01-30, do not input position/speed/torque instructions, otherwise the instructions will be lost or operation errors will be caused.
449
450 ✎When applied to a vertical axis, the external force or the weight of the mechanical moving part may cause the machine to move slightly. When the servo motor is stationary, and the servo enable is OFF, the brake output will be OFF immediately. However, the motor is still energized within the time of P01-31 to prevent mechanical movement from moving due to its own weight or external force.
451 )))
452
453 [[image:image-20220608163304-3.png]]
454
455 Figure 6-3 Brake Timing of when the motor is stationary
456
457 ✎**Note: **For the delay time of the contact part of the brake at ② in the figure, please refer to the relevant specifications of motor.
458
459 2) The brake timing when servo motor rotates
460
461 When the servo enable is from ON to OFF, if the actual motor speed is greater than or equal to 20 rpm, the drive will act in accordance with the rotation brake sequence. The specific sequence action is shown in __[[Figure 6-4>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608163425-4.png?rev=1.1]]__.
462
463
464 |(((
465 [[image:image-20220611151719-4.png]]
466 )))
467 |(((
468 ✎When the servo enable is turned from OFF to ON, within P1-30, do not input position, speed or torque instructions, otherwise the instructions will be lost or operation errors will be caused.
469
470 ✎When the servo motor rotates, the servo enable is OFF and the servo motor is in the zero-speed shutdown state, but the brake output must meet any of the following conditions before it could be set OFF:
471
472 P01-33 time has not arrived, but the motor has decelerated to the speed set by P01-32;
473
474 P01-33 time is up, but the motor speed is still higher than the set value of P01-32.
475
476 ✎After the brake output changes from ON to OFF, the motor is still in communication within 50ms to prevent the mechanical movement from moving due to its own weight or external force.
477 )))
478
479 [[image:image-20220608163425-4.png]]
480
481 Figure 6-4 Brake timing when the motor rotates
482
483 **(4) Brake timing when the servo drive fails**
484
485 The brake timing (free shutdown) in the fault status is as follows.
486
487
488 [[image:image-20220608163541-5.png]]
489
490 Figure 6-5 The brake timing (free shutdown) in the fault state
491
492 = **Position control mode** =
493
494 Position control is the most important and commonly used control mode of the servo system. Position control refers to controlling the position of the motor through position instructions, and determining the target position of the motor by the total number of position instructions. The frequency of the position instruction determines the motor rotation speed. The servo drive can achieve fast and accurate control of the position and speed of the machine. Therefore, the position control mode is mainly used for occasions that require positioning control, such as manipulators, mounter, engraving machines, CNC machine tools, etc. The position control block diagram is shown in the figure below.
495
496
497 [[image:image-20220608163643-6.png]]
498
499 Figure 6-6 Position control diagram
500
501 Set “P00-01” to 1 by the software “Wecon SCTool”, and the servo drive is in position control mode.
502
503
504 |=(% scope="row" %)**Function code**|=**Name**|=(((
505 **Setting method**
506 )))|=(((
507 **Effective time**
508 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
509 |=P01-01|Control mode|(((
510 Operation setting
511 )))|(((
512 immediately Effective
513 )))|0|0 to 6|(((
514 0: position control
515
516 2: speed control
517
518 3: torque control
519
520 4: position/speed mix control
521
522 5: position/torque mix control
523
524 6: speed /torque mix control
525 )))|-
526
527 Table 6-10 Control mode parameters
528
529 == **Position instruction input setting** ==
530
531 When the VD2 series servo drive is in position control mode, firstly set the position instruction source through the function code “P01-06”.
532
533
534 |=(% scope="row" %)**Function code**|=**Name**|=(((
535 **Setting method**
536 )))|=(((
537 **Effective time**
538 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
539 |=P01-06|Position instruction source|(((
540 Operation setting
541 )))|(((
542 immediately Effective
543 )))|0|0 to 1|(((
544 0: pulse instruction
545
546 1: internal position instruction
547 )))|-
548
549 Table 6-11 Position instruction source parameter
550
551 **(1) The source of position instruction is pulse instruction (P01-06=0)**
552
553 1) Low-speed pulse instruction input
554
555 |[[image:image-20220707092316-1.png]]|[[image:image-20220707092322-2.png]]
556 |VD2A and VD2B servo drives|VD2F servo drive
557 |(% colspan="2" %)Figure 6-7 Position instruction input setting
558
559 VD2 series servo drive has a set of pulse input terminals to receive the input of position pulse (via the CN2 terminal). The position pulse mode connection is shown in __[[Figure 6-7>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HPositioninstructioninputsetting]]__.
560
561 The instruction pulse and symbol output circuit on the control device(HMI/PLC) side could select differential input or open collector input. The maximum input frequency is shown as below.
562
563
564 |**Pulse method**|**Maximum frequency**|**Voltage**
565 |Open collector input|200K|24V
566 |Differential input|500K|5V
567
568 Table 6-12 Pulse input specifications
569
570 1.Differential input
571
572 Take VD2A and VD2B drive as examples, the connection of differential input is shown as below.
573
574 (% style="text-align:center" %)
575 [[image:image-20220707092615-5.jpeg]]
576
577 Figure 6-8 Differential input connection
578
579 ✎**Note: **The differential input connection of the VD2F drive differs only from the signal pin number. Please refer to “__[[4.4.3 position instruction input signal>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/04%20Wiring/#HPositioninstructioninputsignal]]__”
580
581 2.Open collector input
582
583 Take VD2A and VD2B drive as examples, the connection of differential input is shown as below.
584
585 (% style="text-align:center" %)
586 [[image:image-20220707092401-3.jpeg||height="530" width="834"]]
587
588 Figure 6-9 Open collector input connection
589
590 ✎**Note:** The differential input connection of the VD2F drive differs only from the signal pin number. Please refer to “__[[4.4.3 position instruction input signal>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/04%20Wiring/#HPositioninstructioninputsignal]]__”
591
592 2) Position pulse frequency and anti-interference level
593
594 When low-speed pulses input pins, you need to set a certain pin filter time to filter the input pulse instructions to prevent external interference from entering the servo drive and affecting motor control. After the filter function is enabled, the input and output waveforms of the signal are shown in Figure 6-10.
595
596 (% style="text-align:center" %)
597 [[image:image-20220608163952-8.png]]
598
599 Figure 6-10 Example of filtered signal waveform
600
601 The input pulse frequency refers to the frequency of the input signal, which can be modified through the function code “P00-13”. If the actual input frequency is greater than the set value of “P00-13”, it may cause pulse loss or alarm. The position pulse anti-interference level can be adjusted through the function code “P00-14”, the larger the set value, the greater the filtering depth. The details of related function code parameters are as shown below.
602
603
604 |=(% scope="row" %)**Function code**|=**Name**|=(((
605 **Setting method**
606 )))|=(((
607 **Effective time**
608 )))|=**Default value**|=**Range**|=(% colspan="2" %)**Definition**|=**Unit**
609 |=P00-13|Maximum position pulse frequency|(((
610 Shutdown setting
611 )))|(((
612 Effective immediately
613 )))|300|1 to 500|(% colspan="2" %)Set the maximum frequency of external pulse instruction|KHz
614 |=(% rowspan="3" %)P00-14|(% rowspan="3" %)Position pulse anti-interference level|(% rowspan="3" %)(((
615 Operation setting
616 )))|(% rowspan="3" %)(((
617 Power-on again
618 )))|(% rowspan="3" %)2|(% rowspan="3" %)0 to 9|(% colspan="2" %)(((
619 Set the anti-interference level of external pulse instruction.
620
621 0: no filtering;
622
623 1: Filtering time 128ns
624
625 2: Filtering time 256ns
626
627 3: Filtering time 512ns
628
629 4: Filtering time 1.024us
630
631 5: Filtering time 2.048us
632
633 6: Filtering time 4.096us
634
635 7: Filtering time 8.192us
636
637 8: Filtering time 16.384us
638 )))|(% rowspan="3" %)-
639 |=(% rowspan="2" %)9|VD2: Filtering time 25.5us
640 |=VD2F: Filtering time 25.5us
641
642 Table 6-13 Position pulse frequency and anti-interference level parameters
643
644 3) Position pulse type selection
645
646 In VD2 series servo drives, there are three types of input pulse instructions, and the related function codes are shown in the table below.
647
648
649 |=(% scope="row" %)**Function code**|=**Name**|=(((
650 **Setting method**
651 )))|=(((
652 **Effective time**
653 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
654 |=P00-12|Position pulse type selection|(((
655 Operation setting
656 )))|(((
657 Power-on again
658 )))|0|0 to 5|(((
659 0: direction + pulse (positive logic)
660
661 1: CW/CCW
662
663 2: A, B phase quadrature pulse (4 times frequency)
664
665 3: Direction + pulse (negative logic)
666
667 4: CW/CCW (negative logic)
668
669 5: A, B phase quadrature pulse (4 times frequency negative logic)
670 )))|-
671
672 Table 6-14 Position pulse type selection parameter
673
674 |=(% scope="row" %)**Pulse type selection**|=**Pulse type**|=**Signal**|=**Schematic diagram of forward pulse**|=**Schematic diagram of negative pulse**
675 |=0|(((
676 Direction + pulse
677
678 (Positive logic)
679 )))|(((
680 PULSE
681
682 SIGN
683 )))|[[image:image-20220707094340-6.jpeg]]|[[image:image-20220707094345-7.jpeg]]
684 |=1|CW/CCW|(((
685 PULSE (CW)
686
687 SIGN (CCW)
688 )))|(% colspan="2" %)[[image:image-20220707094351-8.jpeg]]
689 |=2|(((
690 AB phase orthogonal
691
692 pulse (4 times frequency)
693 )))|(((
694 PULSE (Phase A)
695
696 SIGN (Phase B)
697 )))|(((
698
699
700 [[image:image-20220707094358-9.jpeg]]
701
702 Phase A is 90° ahead of Phase B
703 )))|(((
704
705
706 [[image:image-20220707094407-10.jpeg]]
707
708 Phase B is 90° ahead of Phase A
709 )))
710 |=3|(((
711 Direction + pulse
712
713 (Negative logic)
714 )))|(((
715 PULSE
716
717 SIGN
718 )))|[[image:image-20220707094414-11.jpeg]]|[[image:image-20220707094418-12.jpeg]]
719 |=4|(((
720 CW/CCW
721
722 (Negative logic)
723 )))|(((
724 PULSE (CW)
725
726 SIGN (CCW)
727 )))|(% colspan="2" %)[[image:image-20220707094423-13.jpeg]]
728 |=5|(((
729 AB phase orthogonal
730
731 pulse (4 times frequency negative logic)
732 )))|(((
733 PULSE (Phase A)
734
735 SIGN (Phase B)
736 )))|(((
737
738
739 [[image:image-20220707094429-14.jpeg]]
740
741 Phase B is ahead of A phase by 90°
742 )))|(((
743
744
745 [[image:image-20220707094437-15.jpeg]]
746
747 Phase A is ahead of B phase by 90°
748 )))
749
750 Table 6-15 Pulse description
751
752 **(2) The source of position instruction is internal position instruction (P01-06=1)**
753
754 The VD2 series servo drive has a multi-segment position operation function, which supports maximum 16-segment instructions. The displacement, maximum operating speed (steady-state operating speed) and acceleration/deceleration time of each segment could be set separately. The waiting time between positions could also be set according to actual needs. The setting process of multi-segment position is shown in __[[Figure 6-11>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608164116-9.png?rev=1.1]]__.
755
756 The servo drive completely runs the multi-segment position instruction set by P07-01 once, and the total number of positions is called completing one round of operation.
757
758 (% style="text-align:center" %)
759 [[image:image-20220608164116-9.png]]
760
761 Figure 6-11 The setting process of multi-segment position
762
763 1) Set multi-segment position running mode
764
765 |=(% scope="row" %)**Function code**|=**Name**|=(((
766 **Setting method**
767 )))|=(((
768 **Effective time**
769 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
770 |=P07-01|Multi-segment position running mode|(((
771 Shutdown setting
772 )))|(((
773 Effective immediately
774 )))|0|0 to 2|(((
775 0: Single running
776
777 1: Cycle running
778
779 2: DI switching running
780 )))|-
781 |=P07-02|Start segment number|(((
782 Shutdown setting
783 )))|(((
784 Effective immediately
785 )))|1|1 to 16|1st segment NO. in non-DI switching mode|-
786 |=P07-03|End segment number|(((
787 Shutdown setting
788 )))|(((
789 Effective immediately
790 )))|1|1 to 16|last segment NO. in non-DI switching mode|-
791 |=P07-04|Margin processing method|(((
792 Shutdown setting
793 )))|(((
794 Effective immediately
795 )))|0|0 to 1|(((
796 0: Run the remaining segments
797
798 1: Run again from the start segment
799 )))|-
800 |=P07-05|Displacement instruction type|(((
801 Shutdown setting
802 )))|(((
803 Effective immediately
804 )))|0|0 to 1|(((
805 0: Relative position instruction
806
807 1: Absolute position instruction
808 )))|-
809
810 Table 6-16 multi-segment position running mode parameters
811
812 VD2 series servo drive has three multi-segment position running modes, and you could select the best running mode according to the site requirements.
813
814 ~1. Single running
815
816 In this running mode, the segment number is automatically incremented and switched, and the servo drive only operates for one round (the servo drive runs completely once for the total number of multi-segment position instructions set by P07-02 and P07-03). The single running curve is shown in __[[Figure 6-12>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608164226-10.png?rev=1.1]]__, and S1 and S2 are the displacements of the 1st segment and the 2nd segment respectively
817
818
819 (% style="text-align:center" %)
820 [[image:image-20220608164226-10.png]]
821
822 Figure 6-12 Single running curve (P07-02=1, P07-03=2)
823
824 2. Cycle running
825
826 In this running mode, the position number is automatically incremented and switched, and the servo drive repeatedly runs the total number of multi-segment position instructions set by P07-02 and P07-03. The waiting time could be set between each segment. The cycle running curve is shown in __[[Figure 6-13>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608164327-11.png?rev=1.1]]__, and S1,S2,S3 and S4 are the displacements of the 1st, 2nd, 3rd and 4th segment respectively.
827
828
829 (% style="text-align:center" %)
830 [[image:image-20220608164327-11.png]]
831
832 Figure 6-13 Cycle running curve (P07-02=1, P07-03=4)
833
834 |[[image:image-20220611151917-5.png]]
835 |In single running and cycle running mode, the setting value of P07-03 needs to be greater than the setting value of P07-02.
836
837 3. DI switching running
838
839 In this running mode, the next running segment number could be set when operating the current segment number. The interval time is determined by the instruction delay of the host computer. The running segment number is determined by DI terminal logic, and the related function codes are shown in the table below.
840
841 |=(% scope="row" %)**DI function code**|=**Function name**|=**Function**
842 |=21|INPOS1: Internal multi-segment position segment selection 1|Form internal multi-segment position running segment number
843 |=22|INPOS2: Internal multi-segment position segment selection 2|Form internal multi-segment position running segment number
844 |=23|INPOS3: Internal multi-segment position segment selection 3|Form internal multi-segment position running segment number
845 |=24|INPOS4: Internal multi-segment position segment selection 4|Form internal multi-segment position running segment number
846
847 Table 6-17 DI function code
848
849 The multi-segment segment number is a 4-bit binary number, and the DI terminal logic is level valid. When the input level is valid, the segment selection bit value is 1, otherwise it is 0. Table 6-17 shows the correspondence between the position bits 1 to 4 of the internal multi-segment position and the position number.
850
851 |=(% scope="row" %)**INPOS4**|=**INPOS3**|=**INPOS2**|=**INPOS1**|=**Running position number**
852 |=0|0|0|0|1
853 |=0|0|0|1|2
854 |=0|0|1|0|3
855 |=(% colspan="5" %)…………
856 |=1|1|1|1|16
857
858 Table 6-18 INPOS corresponds to running segment number
859
860 The operating curve in this running mode is shown in __[[Figure 6-14>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608164545-12.png?rev=1.1]]__.
861
862 (% style="text-align:center" %)
863 [[image:image-20220608164545-12.png]]
864
865 Figure 6-14 DI switching running curve
866
867 VD2 series servo drives have two margin processing methods: run the remaining segments and run from the start segment again. The related function code is P07-04.
868
869 **A. Run the remaining segments**
870
871 In this processing way, the multi-segment position instruction enable is OFF during running, the servo drive will abandon the unfinished displacement part and shutdown, and the positioning completion signal will be valid after the shutdown is complete. When the multi-segment position enable is ON, and the servo drive will start to run from the next segment where the OFF occurs. The curves of single running and cycle running are shown in __[[Figure 6-15>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608164847-13.png?rev=1.1]]__ and __[[Figure 6-16>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608165032-14.png?rev=1.1]]__ respectively.
872
873 (% style="text-align:center" %)
874 [[image:image-20220608164847-13.png]]
875
876 Figure 6-15 Single running-run the remaining segments (P07-02=1, P07-03=4)
877
878 (% style="text-align:center" %)
879 [[image:image-20220608165032-14.png]]
880
881 Figure 6-16 Cycle running-run the remaining segment (P07-02=1, P07-03=4)
882
883 **B. Run again from the start segment**
884
885 In this processing mode, when the multi-segment position instruction enable is OFF during running, the servo drive will abandon the uncompleted displacement part and shutdown. After the shutdown is completed, the positioning completion signal is valid. When the multi-segment position enable is ON, and the servo drive will start to operate from the next position set by P07-02. The curves of single running and cycle running are shown in __[[Figure 6-17>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608165343-15.png?rev=1.1]]__ and __[[Figure 6-18>>https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/image-20220608165558-16.png?rev=1.1]]__ respectively.
886
887 (% style="text-align:center" %)
888 [[image:image-20220608165343-15.png]]
889
890 Figure 6-17 Single running-run from the start segment again (P07-02=1, P07-03=4)
891
892 (% style="text-align:center" %)
893 [[image:image-20220608165558-16.png]]
894
895 Figure 6-18 Cyclic running-run from the start segment again (P07-02=1, P07-03=4)
896
897 VD2 series servo drives have two types of displacement instructions: relative position instruction and absolute position instruction. The related function code is P07-05.
898
899 A. Relative position instruction
900
901 The relative position instruction takes the current stop position of the motor as the start point and specifies the amount of displacement.
902
903 |(((
904 [[image:image-20220608165710-17.png]]
905 )))|(((
906 [[image:image-20220608165749-18.png]]
907 )))
908 |Figure 6-19 Relative position diagram|Figure 6-20 Displacement diagram
909
910 B. Absolute position instruction
911
912 The absolute position instruction takes "reference origin" as the zero point of absolute positioning, and specifies the amount of displacement.
913
914 |(((
915 [[image:image-20220608165848-19.png]]
916 )))|(((
917 [[image:image-20220608170005-20.png]]
918 )))
919 |Figure 6-21 Absolute indication|Figure 6-22 Displacement
920
921 2) Multi-segment position running curve setting
922
923 The multi-segment position running supports maximum 16 segments different position instructions. The displacement, maximum running speed (steady-state running speed), acceleration and deceleration time of each position and the waiting time between segment could all be set. __[[Table 6-19>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HPositioninstructioninputsetting]]__ are the related function codes of the 1st segment running curve.
924
925 |=(% scope="row" %)**Function code**|=**Name**|=**Setting method**|=**Effective time**|=**Default value**|=**Range**|=**Definition**|=**Unit**
926 |=P07-09|(((
927 1st segment
928
929 displacement
930 )))|(((
931 Operation setting
932 )))|(((
933 Effective immediately
934 )))|10000|(((
935 -2147483647 to
936
937 2147483646
938 )))|Position instruction, positive and negative values could be set|-
939 |=P07-10|Maximum speed of the 1st displacement|(((
940 Operation setting
941 )))|(((
942 Effective immediately
943 )))|100|1 to 5000|Steady-state running speed of the 1st segment|rpm
944 |=P07-11|Acceleration and deceleration of 1st segment displacement|(((
945 Operation setting
946 )))|(((
947 Effective immediately
948 )))|100|1 to 65535|The time required for the acceleration and deceleration of the 1st segment|ms
949 |=P07-12|Waiting time after completion of the 1st segment displacement|(((
950 Operation setting
951 )))|(((
952 Effective immediately
953 )))|100|1 to 65535|Delayed waiting time from the completion of the 1st segment to the start of the next segment|Set by P07-06
954
955 Table 6-19 The 1st position operation curve parameters table
956
957 After setting the above parameters, the actual operation curve of the motor is shown in Figure 6-23.
958
959 (% style="text-align:center" %)
960 [[image:image-20220608170149-21.png]]
961
962 Figure 6-23 The 1st segment running curve of motor
963
964 3) multi-segment position instruction enable
965
966 When selecting multi-segment position instruction as the instruction source, configure 1 DI port channel of the servo drive to function 20 (internal multi-segment position enable signal), and confirm the valid logic of the DI terminal.
967
968 |=(% scope="row" %)**DI function code**|=**Function name**|=**Function**
969 |=20|ENINPOS: Internal multi-segment position enable signal|(((
970 DI port logic invalid: Does not affect the current operation of the servo motor.
971
972 DI port logic valid: Motor runs multi-segment position
973 )))
974
975 [[image:image-20220611152020-6.png]]
976
977 It should be noted that only when the internal multi-segment position enable signal is OFF, can the P07 group parameters be actually modified to write into the servo drive!
978
979 == **Electronic gear ratio** ==
980
981 **(1) Definition of electronic gear ratio**
982
983 In the position control mode, the input position instruction (instruction unit) is to set the load displacement, and the motor position instruction (encoder unit) is to set the motor displacement, in order to establish the proportional relationship between the motor position instruction and the input position instruction, electronic gear ratio function is used. "instruction unit" refers to the minimum resolvable value input from the control device(HMI/PLC) to the servo drive. "Encoder unit" refers to the value of the input instruction processed by the electronic gear ratio.
984
985 With the function of the frequency division (electronic gear ratio <1) or multiplication (electronic gear ratio > 1) of the electronic gear ratio, the actual the motor rotation or movement displacement can be set when the input position instruction is 1 instruction unit.
986
987 It it noted that the electronic gear ratio setting range of the 2500-line incremental encoder should meet the formula (6-1), and the electronic gear ratio setting range of the 17-bit encoder should meet the formula (6-2), setting range of the electronic gear ratio of 23-bit encoder should meet the formula (6-3)
988
989 (% style="text-align:center" %)
990 [[image:image-20220707094901-16.png]]
991
992
993
994
995 Otherwise, the servo drive will report Er.35: "Electronic gear ratio setting exceeds the limit"!
996
997 **(2) Setting steps of electronic gear ratio**
998
999 [[image:image-20220707100850-20.jpeg]]
1000
1001 Figure 6-24 Setting steps of electronic gear ratio
1002
1003 **(3) lectronic gear ratio switch setting**
1004
1005
1006 When the function code P00-16 is 0, the electronic gear ratio switching function could be used. You could switch between electronic gear 1 and electronic gear 2 as needed. There is only one set of gear ratios at any time. Related function codes are shown in the table below.
1007
1008
1009 |=(% scope="row" %)**Function code**|=**Name**|=(((
1010 **Setting method**
1011 )))|=(((
1012 **Effective time**
1013 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
1014 |=P00-16|Number of instruction pulses when the motor rotates one circle|(((
1015 Shutdown setting
1016 )))|(((
1017 Effective immediately
1018 )))|10000|0 to 131072|Set the number of position command pulses required for each turn of the motor. When the setting value is 0, [P00-17]/[P00-19] Electronic gear 1/2 numerator, [P00-18]/[P00-20] Electronic gear 1/2 denominator is valid.|(((
1019 Instruction pulse
1020
1021 unit
1022 )))
1023 |=P00-17|(((
1024 Electronic gear 1
1025
1026 numerator
1027 )))|Operation setting|(((
1028 Effective immediately
1029 )))|1|1 to 4294967294|Set the numerator of the 1st group electronic gear ratio for position instruction frequency division or multiplication. P00-16 is effective when the number of instruction pulses of one motor rotation is 0.|-
1030 |=P00-18|(((
1031 Electronic gear 1
1032
1033 denominator
1034 )))|(((
1035 Operation setting
1036 )))|(((
1037 Effective immediately
1038 )))|1|1 to 4294967294|Set the denominator of the 1st group electronic gear ratio for position instruction frequency division or multiplication. P00-16 is effective when the number of instruction pulses of one motor rotation is 0.|-
1039 |=P00-19|(((
1040 Electronic gear 2
1041
1042 numerator
1043 )))|Operation setting|(((
1044 Effective immediately
1045 )))|1|1 to 4294967294|Set the numerator of the 2nd group electronic gear ratio for position instruction frequency division or multiplication. P00-16 is effective when the number of instruction pulses of one motor rotation is 0.|-
1046 |=P00-20|(((
1047 Electronic gear 2
1048
1049 denominator
1050 )))|Operation setting|(((
1051 Effective immediately
1052 )))|1|1 to 4294967294|Set the denominator of the 2nd group electronic gear ratio for position instruction frequency division or multiplication. P00-16 is effective when the number of instruction pulses of one motor rotation is 0.|-
1053
1054 Table 6-20 Electronic gear ratio function code
1055
1056 To use electronic gear ratio 2, it is necessary to configure any DI port as function 09 (GEAR-SEL electronic gear switch 1), and determine the valid logic of the DI terminal.
1057
1058
1059 |=(% scope="row" %)**DI function code**|=**Function name**|=**Function**
1060 |=09|GEAR-SEL electronic gear switch 1|(((
1061 DI port logic invalid: electronic gear ratio 1
1062
1063 DI port logic valid: electronic gear ratio 2
1064 )))
1065
1066 Table 6-21 Switching conditions of electronic gear ratio group
1067
1068 |=(% scope="row" %)**P00-16 value**|=(% style="width: 510px;" %)**DI terminal level corresponding to DI port function 9**|=(% style="width: 400px;" %)**Electronic gear ratio** [[image:image-20220707101503-24.png]]
1069 |=(% rowspan="2" %)0|(% style="width:510px" %)DI port logic invalid|(% style="width:400px" %)[[image:image-20220707101328-21.png]]
1070 |=(% style="width: 510px;" %)DI port logic valid|(% style="width:400px" %)[[image:image-20220707101336-22.png]]
1071 |=1 to 131072|(% style="width:510px" %)~-~-|(% style="width:400px" %)[[image:image-20220707101341-23.png]]
1072
1073 Table 6-22 Application of electronic gear ratio
1074
1075 When the function code P00-16 is not 0, the electronic gear ratio [[image:image-20220707101509-25.png]] is invalid.
1076
1077 == **Position instruction filtering** ==
1078
1079 Position instruction filtering is to filter the position instruction (encoder unit) after the electronic gear ratio frequency division or frequency multiplication, including first-order low-pass filtering and average filtering operation.
1080
1081 In the following situations, position instruction filtering should be added.
1082
1083 1. The position instruction output by host computer has not been processed with acceleration or deceleration;
1084 1. The pulse instruction frequency is low;
1085 1. When the electronic gear ratio is 10 times or more.
1086
1087 Reasonable setting of the position loop filter time constant can operate the motor more smoothly, so that the motor speed will not overshoot before reaching the stable point. This setting has no effect on the number of instruction pulses. The filter time is not as long as possible. If the filter time is longer, the delay time will be longer too, and the response time will be correspondingly longer. It is an illustration of several kinds of position filtering.
1088
1089 (% style="text-align:center" %)
1090 [[image:image-20220608170455-23.png]]
1091
1092 Figure 6-25 Position instruction filtering diagram
1093
1094 |=(% scope="row" %)**Function code**|=**Name**|=(((
1095 **Setting method**
1096 )))|=(((
1097 **Effective time**
1098 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
1099 |=P04-01|Pulse instruction filtering method|(((
1100 Shutdown setting
1101 )))|(((
1102 Effective immediately
1103 )))|0|0 to 1|(((
1104 0: 1st-order low-pass filtering
1105
1106 1: average filtering
1107 )))|-
1108 |=P04-02|Position instruction 1st-order low-pass filtering time constant|Shutdown setting|(((
1109 Effective immediately
1110 )))|0|0 to 1000|Position instruction first-order low-pass filtering time constant|ms
1111 |=P04-03|Position instruction average filtering time constant|Shutdown setting|(((
1112 Effective immediately
1113 )))|0|0 to 128|Position instruction average filtering time constant|ms
1114
1115 Table 6-23 Position instruction filter function code
1116
1117 == **Clearance of position deviation** ==
1118
1119 Position deviation clearance means that the drive could zero the deviation register in position mode. The user can realize the function of clearing the position deviation through the DI terminal;
1120
1121 Position deviation = (position instruction-position feedback) (encoder unit)
1122
1123 == **Position-related DO output function** ==
1124
1125 The feedback value of position instruction is compared with different thresholds, and output DO signal for host computer use.
1126
1127 (% class="wikigeneratedid" id="HPositioningcompletion2Fpositioningapproachoutput" %)
1128 **Positioning completion/positioning approach output**
1129
1130 (% class="wikigeneratedid" %)
1131 the positioning completion function means that when the position deviation meets the value set by P05-12, it could be considered that the positioning is complete in position control mode. At this time, servo drive could output the positioning completion signal, and the host computer could confirm the completion of the positioning of servo drive after receiving the signal.
1132
1133 (% style="text-align:center" %)
1134 [[image:image-20220608170550-24.png]]
1135
1136 Figure 6-26 Positioning completion signal output diagram
1137
1138 When using the positioning completion or approach function, you could also set positioning completion, positioning approach conditions, window and hold time. The principle of window filter time is shown in Figure 6-27.
1139
1140 To use the positioning completion/positioning approach function, a DO terminal of the servo drive should be assigned to the function 134 (P-COIN, positioning completion)/ 135 (P-NEAR, positioning approach). The related code parameters and DO function codes are shown as __[[Table 6-24>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HPosition-relatedDOoutputfunction]]__.
1141
1142 (% style="text-align:center" %)
1143 [[image:image-20220608170650-25.png]]
1144
1145 Figure 6-27 Positioning completion signal output with increased window filter time diagram
1146
1147 |=(% scope="row" %)**Function code**|=**Name**|=(((
1148 **Setting method**
1149 )))|=(((
1150 **Effective time**
1151 )))|=**Default value**|=**Range**|=**Definition**|=**Unit**
1152 |=P05-12|Positioning completion threshold|(((
1153 Operation setting
1154 )))|(((
1155 Effective immediately
1156 )))|800|1 to 65535|Positioning completion threshold|Equivalent pulse unit
1157 |=P05-13|Positioning approach threshold|(((
1158 Operation setting
1159 )))|(((
1160 Effective immediately
1161 )))|5000|1 to 65535|Positioning approach threshold|Equivalent pulse unit
1162 |=P05-14|Position detection window time|(((
1163 Operation setting
1164 )))|(((
1165 Effective immediately
1166 )))|10|0 to 20000|Set positioning completion detection window time|ms
1167 |=P05-15|Positioning signal hold time|(((
1168 Operation setting
1169 )))|(((
1170 Effective immediately
1171 )))|100|0 to 20000|Set positioning completion output hold time|ms
1172
1173 Table 6-24 Function code parameters of positioning completion
1174
1175 |=(% scope="row" %)**DO function code**|=**Function name**|=**Function**
1176 |=134|P-COIN positioning complete|Output this signal indicates the servo drive position is complete.
1177 |=135|(((
1178 P-NEAR positioning close
1179 )))|(((
1180 Output this signal indicates that the servo drive position is close.
1181 )))
1182
1183 Table 6-25 Description of DO rotation detection function code
1184
1185 = **Speed control mode** =
1186
1187 Speed control refers to controlling the speed of the machine through speed instructions. Given the speed instruction by digital voltage or communication, the servo drive can control the mechanical speed fast and precisely. Therefore, the speed control mode is mainly used to control the rotation speed such as analog CNC engraving and milling machine. [[Figure 6-28>>path:https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/6.28.jpg?width=806&height=260&rev=1.1]] is the speed control block diagram.
1188
1189 (% style="text-align:center" %)
1190 [[image:6.28.jpg||height="260" width="806"]]
1191
1192 Figure 6-28 Speed control block diagram
1193
1194 == **Speed instruction input setting** ==
1195
1196 In speed control mode, VD2A and VD2B servo drives have two instruction source: internal speed instruction and analog speed instruction. VD2F drive only supports internal speed instruction. Speed instruction source is set by function code P01-01.
1197
1198
1199 |**Function code**|**Name**|(((
1200 **Setting method**
1201 )))|(((
1202 **Effective time**
1203 )))|**Default value**|**Range**|**Definition**|**Unit**
1204 |P01-01|Speed instruction source|(((
1205 Shutdown setting
1206 )))|(((
1207 Effective immediately
1208 )))|1|1 to 1|(((
1209 0: internal speed instruction
1210
1211 1: AI_1 analog input (not supported by VD2F)
1212 )))|-
1213
1214 Table 6-26 Speed instruction source parameter
1215
1216 **(1) Speed instruction source is internal speed instruction (P01-01=0)**
1217
1218 Speed instruction comes from internal instruction, and the internal speed instruction is given by a number. The VD2 series servo drive has internal multi-segment speed running function. There are 8 segments speed instructions stored in servo drive, and the speed of each segment could be set individually. The servo drive uses the 1st segment internal speed by default. To use the 2nd to 8th segment internal speed, the corresponding number of DI terminals must be configured as functions 13, 14, and 15. The detailed parameters and function codes are shown as below.
1219
1220
1221 |**Function code**|**Name**|(((
1222 **Setting method**
1223 )))|(((
1224 **Effective time**
1225 )))|**Default value**|**Range**|**Definition**|**Unit**
1226 |(% rowspan="2" %)P01-02|(% rowspan="2" %)(((
1227 Internal speed Instruction 0
1228 )))|(% rowspan="2" %)(((
1229 Operation setting
1230 )))|(% rowspan="2" %)(((
1231 Effective immediately
1232 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1233 Internal speed instruction 0
1234
1235 When DI input port:
1236
1237 15-INSPD3: 0
1238
1239 14-INSPD2: 0
1240
1241 13-INSPD1: 0,
1242
1243 select this speed instruction to be effective.
1244 )))|(% rowspan="2" %)rpm
1245 |-5000 to 5000*
1246 |(% rowspan="2" %)P01-23|(% rowspan="2" %)(((
1247 Internal speed Instruction 1
1248 )))|(% rowspan="2" %)(((
1249 Operation setting
1250 )))|(% rowspan="2" %)(((
1251 Effective immediately
1252 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1253 Internal speed instruction 1
1254
1255 When DI input port:
1256
1257 15-INSPD3: 0
1258
1259 14-INSPD2: 0
1260
1261 13-INSPD1: 1,
1262
1263 Select this speed instruction to be effective.
1264 )))|(% rowspan="2" %)rpm
1265 |-5000 to 5000*
1266 |(% rowspan="2" %)P01-24|(% rowspan="2" %)(((
1267 Internal speed Instruction 2
1268 )))|(% rowspan="2" %)(((
1269 Operation setting
1270 )))|(% rowspan="2" %)(((
1271 Effective immediately
1272 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1273 Internal speed instruction 2
1274
1275 When DI input port:
1276
1277 15-INSPD3: 0
1278
1279 14-INSPD2: 1
1280
1281 13-INSPD1: 0,
1282
1283 Select this speed instruction to be effective.
1284 )))|(% rowspan="2" %)rpm
1285 |-5000 to 5000*
1286 |(% rowspan="2" %)P01-25|(% rowspan="2" %)(((
1287 Internal speed Instruction 3
1288 )))|(% rowspan="2" %)(((
1289 Operation setting
1290 )))|(% rowspan="2" %)(((
1291 Effective immediately
1292 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1293 Internal speed instruction 3
1294
1295 When DI input port:
1296
1297 15-INSPD3: 0
1298
1299 14-INSPD2: 1
1300
1301 13-INSPD1: 1,
1302
1303 Select this speed instruction to be effective.
1304 )))|(% rowspan="2" %)rpm
1305 |-5000 to 5000*
1306
1307 |(% rowspan="2" %)P01-26|(% rowspan="2" %)(((
1308 Internal speed Instruction 4
1309 )))|(% rowspan="2" %)(((
1310 Operation setting
1311 )))|(% rowspan="2" %)(((
1312 Effective immediately
1313 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1314 Internal speed instruction 4
1315
1316 When DI input port:
1317
1318 15-INSPD3: 1
1319
1320 14-INSPD2: 0
1321
1322 13-INSPD1: 0,
1323
1324 Select this speed instruction to be effective.
1325 )))|(% rowspan="2" %)rpm
1326 |-5000 to 5000*
1327 |(% rowspan="2" %)P01-27|(% rowspan="2" %)(((
1328 Internal speed Instruction 5
1329 )))|(% rowspan="2" %)(((
1330 Operation setting
1331 )))|(% rowspan="2" %)(((
1332 Effective immediately
1333 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1334 Internal speed instruction 5
1335
1336 When DI input port:
1337
1338 15-INSPD3: 1
1339
1340 14-INSPD2: 0
1341
1342 13-INSPD1: 1,
1343
1344 Select this speed instruction to be effective.
1345 )))|(% rowspan="2" %)rpm
1346 |-5000 to 5000*
1347 |(% rowspan="2" %)P01-28|(% rowspan="2" %)(((
1348 Internal speed Instruction 6
1349 )))|(% rowspan="2" %)(((
1350 Operation setting
1351 )))|(% rowspan="2" %)(((
1352 Effective immediately
1353 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1354 Internal speed instruction 6
1355
1356 When DI input port:
1357
1358 15-INSPD3: 1
1359
1360 14-INSPD2: 1
1361
1362 13-INSPD1: 0,
1363
1364 Select this speed instruction to be effective.
1365 )))|(% rowspan="2" %)rpm
1366 |-5000 to 5000*
1367 |(% rowspan="2" %)P01-29|(% rowspan="2" %)(((
1368 Internal speed Instruction 7
1369 )))|(% rowspan="2" %)(((
1370 Operation setting
1371 )))|(% rowspan="2" %)(((
1372 Effective immediately
1373 )))|(% rowspan="2" %)0|-3000 to 3000|(% rowspan="2" %)(((
1374 Internal speed instruction 7
1375
1376 When DI input port:
1377
1378 15-INSPD3: 1
1379
1380 14-INSPD2: 1
1381
1382 13-INSPD1: 1,
1383
1384 Select this speed instruction to be effective.
1385 )))|(% rowspan="2" %)rpm
1386 |-5000 to 5000*
1387
1388 Table 6-27 Internal speed instruction parameters
1389
1390 ✎**Note: **“*” means the set range of VD2F servo drive.
1391
1392
1393 |**DI function code**|**function name**|**Function**
1394 |13|INSPD1 internal speed instruction selection 1|Form internal multi-speed running segment number
1395 |14|INSPD2 internal speed instruction selection 2|Form internal multi-speed running segment number
1396 |15|INSPD3 internal speed instruction selection 3|Form internal multi-speed running segment number
1397
1398 Table 6-28 DI multi-speed function code description
1399
1400 The multi-speed segment number is a 3-bit binary number, and the DI terminal logic is level valid. When the input level is valid, the segment selection bit value is 1, otherwise it is 0. The corresponding relationship between INSPD1 to 3 and segment numbers is shown as below.
1401
1402
1403 |**INSPD3**|**INSPD2**|**INSPD1**|**Running segment number**|**Internal speed instruction number**
1404 |0|0|0|1|0
1405 |0|0|1|2|1
1406 |0|1|0|3|2
1407 |(% colspan="5" %)......
1408 |1|1|1|8|7
1409
1410 Table 6-29 Correspondence between INSPD bits and segment numbers
1411
1412
1413 [[image:image-20220608170845-26.png]]
1414
1415 Figure 6-29 Multi-segment speed running curve
1416
1417 **(2) Speed instruction source is internal speed instruction (P01-01=0)**
1418
1419 The servo drive processes the analog voltage signal output by the host computer or other equipment as a speed instruction. VD2A and VD2B series servo drives have 2 analog input channels: AI_1 and AI_2. AI_1 is analog speed input, and AI_2 is analog speed limit.
1420
1421
1422 [[image:image-20220608153341-5.png]]
1423
1424 Figure 6-30 Analog input circuit
1425
1426 Taking AI_1 as an example, the method of setting the speed instruction of analog voltage is illustrated as below.
1427
1428
1429 [[image:image-20220608170955-27.png]]
1430
1431 Figure 6-31 Analog voltage speed instruction setting steps
1432
1433 Explanation of related terms:
1434
1435 Zero drift: When analog input voltage is 0, the servo drive sample voltage value relative to the value of GND.
1436
1437 Bias: After zero drift correction, the corresponding analog input voltage when the sample voltage is 0.
1438
1439 Dead zone: It is the corresponding analog input voltage interval when the sample voltage is 0.
1440
1441
1442 [[image:image-20220608171124-28.png]]
1443
1444 Figure 6-32 AI_1 diagram before and after bias
1445
1446
1447 |**Function code**|**Name**|**Setting method**|**Effective time**|**Default value**|**Range**|**Definition**|**Unit**
1448 |P05-01☆|AI_1 input bias|Operation setting|Effective immediately|0|-5000 to 5000|Set AI_1 channel analog bias value|mV
1449 |P05-02☆|AI_1 input filter time constant|Operation setting|Effective immediately|200|0 to 60000|AI_1 channel input first-order low-pass filtering time constant|0.01ms
1450 |P05-03☆|AI_1 dead zone|Operation setting|Effective immediately|20|0 to 1000|Set AI_1 channel quantity dead zone value|mV
1451 |P05-04☆|AI_1 zero drift|Operation setting|Effective immediately|0|-500 to 500|Automatic calibration of zero drift inside the drive|mV
1452
1453 Table 6-30 AI_1 parameters
1454
1455 ✎**Note: **“☆” means VD2F servo drive does not support the function code .
1456
1457 == **Acceleration and deceleration time setting** ==
1458
1459 The acceleration and deceleration time setting can achieve the expectation of controlling acceleration by converting the speed instruction with higher acceleration into the speed instruction with gentle acceleration.
1460
1461 In the speed control mode, excessive acceleration of the speed instruction will cause the motor to jump or vibrate. Therefore, a suitable acceleration and deceleration time can realize the smooth speed change of the motor and avoid the occurrence of mechanical damage caused by the above situation.
1462
1463
1464 [[image:image-20220608171314-29.png]]
1465
1466 Figure 6-33 of acceleration and deceleration time diagram
1467
1468 Actual acceleration time T1 =[[image:https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/43.jpg?rev=1.1]]
1469
1470 Actual deceleration time T2 =[[image:https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/44.jpg?rev=1.1]]
1471
1472
1473 |**Function code**|**Name**|(((
1474 **Setting method**
1475 )))|(((
1476 **Effective time**
1477 )))|**Default value**|**Range**|**Definition**|**Unit**
1478 |P01-03|Acceleration time|(((
1479 Operation setting
1480 )))|(((
1481 Effective immediately
1482 )))|50|0 to 65535|The time for the speed instruction to accelerate from 0 to 1000rpm|ms
1483 |P01-04|Deceleration time|(((
1484 Operation setting
1485 )))|(((
1486 Effective immediately
1487 )))|50|0 to 65535|The time for the speed instruction to decelerate from 1000rpm to 0|ms
1488
1489 Table 6-31 Acceleration and deceleration time parameters
1490
1491 == **Speed instruction limit** ==
1492
1493 In speed mode, the servo drive could limit the size of the speed instruction. The sources of speed instruction limit include:
1494
1495 1. P01-10: Set the maximum speed limit value
1496 1. P01-12: Set forward speed limit value
1497 1. P01-13: Set reverse speed limit value
1498 1. The maximum speed of the motor: determined by motor model
1499
1500 The actual motor speed limit interval satisfies the following relationship:
1501
1502 The amplitude of forward speed instruction ≤ min (Maximum motor speed, P01-10, P01-12)
1503
1504 The amplitude of negative speed command ≤ min (Maximum motor speed, P01-10, P01-13)
1505
1506
1507 |**Function code**|**Name**|(((
1508 **Setting method**
1509 )))|(((
1510 **Effective time**
1511 )))|**Default value**|**Range**|**Definition**|**Unit**
1512 |P01-10|Maximum speed threshold|(((
1513 Operation setting
1514 )))|(((
1515 Effective immediately
1516 )))|3600|0 to 5000|Set the maximum speed limit value, if exceeds this value, an overspeed fault will be reported|rpm
1517 |P01-12|Forward speed threshold|(((
1518 Operation setting
1519 )))|(((
1520 Effective immediately
1521 )))|3000|0 to 5000|Set forward speed limit value|rpm
1522 |P01-13|Reverse speed threshold|(((
1523 Operation setting
1524 )))|(((
1525 Effective immediately
1526 )))|3000|0 to 5000|Set reverse speed limit value|rpm
1527
1528 Table 6-32 Rotation speed related function codes
1529
1530 == **Zero-speed clamp function** ==
1531
1532 The zero speed clamp function refers to the speed control mode, when the zero speed clamp signal (ZCLAMP) is valid, and the absolute value of the speed instruction is lower than the zero speed clamp speed threshold (P01-22), the servo motor is at In locked state, the servo drive is in position lock mode at this time, and the speed instruction is invalid.
1533
1534 If the speed instruction amplitude is greater than zero-speed clamp speed threshold, the servo motor exits the locked state and continues to run according to the current input speed instruction.
1535
1536
1537 |**Function code**|**Name**|(((
1538 **Setting method**
1539 )))|(((
1540 **Effective time**
1541 )))|**Default value**|**Range**|**Definition**|**Unit**
1542 |P01-21|(((
1543 Zero-speed clamp function selection
1544 )))|(((
1545 Operation setting
1546 )))|(((
1547 Effective immediately
1548 )))|0|0 to 3|(((
1549 Set the zero-speed clamp function. In speed mode:
1550
1551 0: Force the speed to 0;
1552
1553 1: Force the speed to 0, and keep the position locked when the actual speed is less than P01-22
1554
1555 2: When speed instruction is less than P01-22, force the speed to 0 and keep the position locked
1556
1557 3: Invalid, ignore zero-speed clamp input
1558 )))|-
1559 |P01-22|(((
1560 Zero-speed clamp speed threshold
1561 )))|(((
1562 Operation setting
1563 )))|(((
1564 Effective immediately
1565 )))|20|0 to 1000|Set the speed threshold of zero-speed clamp function|rpm
1566
1567 Table 6-33 Zero-speed clamp related parameters
1568
1569
1570 [[image:image-20220608171549-30.png]]
1571
1572 Figure 6-34 Zero-speed clamp diagram
1573
1574 == **Speed-related DO output function** ==
1575
1576 The feedback value of the position instruction is compared with different thresholds, and could output DO signal for host computer use.
1577
1578 **(1) Rotation detection signal**
1579
1580 After the speed instruction is filtered, the absolute value of the actual speed absolute value of the servo motor reaches P05-16 (rotation detection speed threshold), it could be considered that the motor is rotating. At this time, the servo drive outputs a rotation detection signal (TGON), which can be used to confirm that the motor has rotated. On the contrary, when the absolute value of the actual rotation speed of the servo motor is less than P05-16, it is considered that the motor is not rotating.
1581
1582
1583 [[image:image-20220608171625-31.png]]
1584
1585 Figure 6-35 Rotation detection signal diagram
1586
1587 To use the motor rotation detection signal output function, a DO terminal of the servo drive should be assigned to function 132 (T-COIN, rotation detection). The function code parameters and related DO function codes are shown in __[[Table 6-34>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__ and __[[Table 6-35>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__.
1588
1589
1590 |**Function code**|**Name**|(((
1591 **Setting method**
1592 )))|(((
1593 **Effective time**
1594 )))|**Default value**|**Range**|**Definition**|**Unit**
1595 |P05-16|(((
1596 Rotation detection
1597
1598 speed threshold
1599 )))|(((
1600 Operation setting
1601 )))|(((
1602 Effective immediately
1603 )))|20|0 to 1000|Set the motor rotation signal judgment threshold|rpm
1604
1605 Table 6-34 Rotation detection speed threshold parameters
1606
1607
1608 |**DO function code**|**Function name**|**Function**
1609 |132|(((
1610 T-COIN rotation detection
1611 )))|(((
1612 Valid: when the absolute value of motor speed after filtering is greater than or equal to the set value of function code P05-16
1613
1614 Invalid, when the absolute value of motor speed after filtering is less than set value of function code P05-16
1615 )))
1616
1617 Table 6-35 DO rotation detection function code
1618
1619 **(2) Zero-speed signal**
1620
1621 If the absolute value of the actual speed of servo motor is less than a certain threshold P05-19, it is considered that servo motor stops rotating (close to a standstill), and the servo drive outputs a zero speed signal (ZSP) at this time. On the contrary, if the absolute value of the actual speed of the servo motor is not less than this value, it is considered that the motor is not at a standstill and the zero-speed signal is invalid.
1622
1623
1624 [[image:image-20220608171904-32.png]]
1625
1626 Figure 6-36 Zero-speed signal diagram
1627
1628 To use the motor zero-speed signal output function, a DO terminal of servo drive should be assigned to function 133 (ZSP, zero-speed signal). The function code parameters and related DO function codes are shown in __[[Table 6-36>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__ and __[[Table 6-37>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__.
1629
1630
1631 |**Function code**|**Name**|(((
1632 **Setting method**
1633 )))|(((
1634 **Effective time**
1635 )))|**Default value**|**Range**|**Definition**|**Unit**
1636 |P05-19|Zero speed output signal threshold|(((
1637 Operation setting
1638 )))|(((
1639 Effective immediately
1640 )))|10|0 to 6000|Set zero-speed output signal judgment threshold|rpm
1641
1642 Table 6-36 Zero-speed output signal threshold parameter
1643
1644
1645 |**DO function code**|**Function name**|**Function**
1646 |133|(((
1647 ZSP zero speed signal
1648 )))|Output this signal indicates that the servo motor is stopping rotation
1649
1650 Table 6-37 DO zero-speed signal function code
1651
1652 **(3) Speed consistent signal**
1653
1654 When the absolute value of the deviation between the actual speed of the servo motor after filtering and the speed instruction meets a certain threshold P05-17, it is considered that the actual speed of the motor has reached the set value, and the servo drive outputs a speed coincidence signal (V-COIN) at this time. Conversely, if the absolute value of the deviation between the actual speed of the servo motor and the set speed instruction after filtering exceeds the threshold, the speed consistent signal is invalid.
1655
1656
1657 [[image:image-20220608172053-33.png]]
1658
1659 Figure 6-37 Speed consistent signal diagram
1660
1661 To use the motor speed consistent function, a DO terminal of the servo drive should be assigned to function 136 (V-COIN, consistent speed). The function code parameters and related DO function codes are shown in __[[Table 6-38>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__ and __[[Table 6-39>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__.
1662
1663
1664 |**Function code**|**Name**|(((
1665 **Setting method**
1666 )))|(((
1667 **Effective time**
1668 )))|**Default value**|**Range**|**Definition**|**Unit**
1669 |P05-17|Speed consistent signal threshold|(((
1670 Operationsetting
1671 )))|(((
1672 Effective immediately
1673 )))|10|0 to 100|Set speed consistent signal threshold|rpm
1674
1675 Table 6-38 Speed consistent signal threshold parameters
1676
1677
1678 |**DO Function code**|**Function name**|**Function**
1679 |136|(((
1680 U-COIN consistent speed
1681 )))|The output signal indicates that the absolute deviation of the actual speed of servo motor and the speed instruction meets the P05-17 set value
1682
1683 Table 6-39 DO speed consistent function code
1684
1685 **(4) Speed approach signal**
1686
1687 After filtering, the absolute value of the actual speed of the servo motor exceeds a certain threshold [P05-17], and it is considered that the actual speed of the servo motor has reached the expected value. At this time, the servo drive can output a speed close signal (V-NEAR) through the DO terminal. Conversely, if the absolute value of the actual speed of the servo motor after filtering is not greater than this value, the speed approach signal is invalid.
1688
1689
1690 [[image:image-20220608172207-34.png]]
1691
1692 Figure 6-38 Speed approaching signal diagram
1693
1694 To use the motor speed approach function, a DO terminal of the servo drive should be assigned to function 137 (V-NEAR, speed approach). The function code parameters and related DO function codes are shown in __[[Table 6-40>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__ and __[[Table 6-40>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeed-relatedDOoutputfunction]]__.
1695
1696
1697 |**Function code**|**Name**|(((
1698 **Setting method**
1699 )))|(((
1700 **Effective time**
1701 )))|**Default value**|**Range**|**Definition**|**Unit**
1702 |P05-18|Speed approach signal threshold|(((
1703 Operation setting
1704 )))|(((
1705 Effective immediately
1706 )))|100|10 to 6000|Set speed approach signal threshold|rpm
1707
1708 Table 6-40 Speed approaching signal threshold parameters
1709
1710
1711 |**DO function code**|**Function name**|**Function**
1712 |137|(((
1713 V-NEAR speed approach
1714 )))|The output signal indicates that the actual speed of the servo motor has reached the expected value
1715
1716 Table 6-41 DO speed approach function code
1717
1718 = **Torque control mode** =
1719
1720 The current of the servo motor has a linear relationship with the torque. Therefore, the control of the current can realize the control of the torque. Torque control refers to controlling the output torque of the motor through torque instructions. Torque instruction could be given by internal instruction and analog voltage.
1721
1722
1723 [[image:image-20220608172405-35.png]]
1724
1725 Figure 6-39 Torque mode diagram
1726
1727 == **Torque instruction input setting** ==
1728
1729 In torque instruction, VD2A and VD2B servo drives have two instruction source: internal torque instruction and analog torque instruction. VD2F drive only has internal torque instruction. The torque instruction source is set by the function code P01-07.
1730
1731
1732 |**Function code**|**Name**|(((
1733 **Setting method**
1734 )))|(((
1735 **Effective time**
1736 )))|**Default value**|**Range**|**Definition**|**Unit**
1737 |P01-08|Torque instruction source|(((
1738 Shutdown setting
1739 )))|(((
1740 Effective immediately
1741 )))|0|0 to 1|(((
1742 0: internal torque instruction
1743
1744 1: AI_1 analog input(not supported by VD2F)
1745 )))|-
1746
1747 Table 6-42 Torque instruction source parameter
1748
1749 **(1) Torque instruction source is internal torque instruction (P01-07=0)**
1750
1751 Torque instruction source is from inside, the value is set by function code P01-08.
1752
1753
1754 |**Function code**|**Name**|(((
1755 **Setting method**
1756 )))|(((
1757 **Effective time**
1758 )))|**Default value**|**Range**|**Definition**|**Unit**
1759 |P01-08|Torque instruction keyboard set value|(((
1760 Operation setting
1761 )))|(((
1762 Effective immediately
1763 )))|0|-3000 to 3000|-300.0% to 300.0%|0.1%
1764
1765 Table 6-43 Torque instruction keyboard set value
1766
1767 **(2) Torque instruction source is internal torque instruction (P01-07=1)**
1768
1769 The servo drive processes the analog voltage signal output by host computer or other equipment as torque instruction. VD2A and VD2B series servo drives have 2 analog input channels: AI_1 and AI_2. AI_1 is analog torque input, and AI_2 is analog torque limit.
1770
1771
1772 [[image:image-20220608153646-7.png||height="213" width="408"]]
1773
1774 Figure 6-40 Analog input circuit
1775
1776 Taking AI_1 as an example, the method of setting torque instruction of analog voltage is as below.
1777
1778
1779 [[image:image-20220608172502-36.png]]
1780
1781 Figure 6-41 Analog voltage torque instruction setting steps
1782
1783 Explanation of related terms:
1784
1785 Zero drift: When analog input voltage is 0, the servo drive sample voltage value relative to the value of GND.
1786
1787 Bias: After zero drift correction, the corresponding analog input voltage when the sample voltage is 0.
1788
1789 Dead zone: It is the corresponding analog input voltage interval when the sample voltage is 0.
1790
1791
1792 [[image:image-20220608172611-37.png]]
1793
1794 Figure 6-42 AI_1 diagram before and after bias
1795
1796
1797 |**Function code**|**Name**|**Setting method**|**Effective time**|**Default value**|**Range**|**Definition**|**Unit**
1798 |P05-01☆|AI_1 input bias|Operation setting|Effective immediately|0|-5000 to 5000|Set AI_1 channel analog bias value|mV
1799 |P05-02☆|AI_1 input filter time constant|Operation setting|Effective immediately|200|0 to 60000|AI_1 channel input first-order low-pass filtering time constant|0.01ms
1800 |P05-03☆|AI_1 dead zone|Operation setting|Effective immediately|20|0 to 1000|Set AI_1 channel dead zone value|mV
1801 |P05-04☆|AI_1 zero drift|Operation setting|Effective immediately|0|-500 to 500|Automatic calibration of zero drift inside the drive|mV
1802
1803 Table 6-44 AI_1 parameters
1804
1805 ✎**Note: **“☆” means VD2F servo drive does not support the function code .
1806
1807 == **Torque instruction filtering** ==
1808
1809 In torque mode, the servo drive could realize low-pass filtering of torque instruction, making the instruction smoother and reducing the vibration of servo motor. The first-order filtering is shown in __[[Figure 6-43>>http://docs.we-con.com.cn/wiki/servo/download/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/WebHome/Wecon%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29_html_205df0eae349c586.gif?rev=1.1]]__.
1810
1811
1812 |**Function code**|**Name**|(((
1813 **Setting method**
1814 )))|(((
1815 **Effective time**
1816 )))|**Default value**|**Range**|**Definition**|**Unit**
1817 |P04-04|Torque filtering time constant|(((
1818 Operation setting
1819 )))|(((
1820 Effective immediately
1821 )))|50|10 to 2500|This parameter is automatically set when “self-adjustment mode selection” is selected as 0|0.01ms
1822
1823 Table 6-45 Torque filtering time constant parameter details
1824
1825 ✎**Note: **If the filter time constant is set too large, the responsiveness will be reduced. Please set it while confirming the responsiveness.
1826
1827
1828 [[image:image-20220608172646-38.png]]
1829
1830 Figure 6-43 Torque instruction-first-order filtering diagram
1831
1832 == **Torque instruction limit** ==
1833
1834 When the absolute value of torque instruction input by host computer is greater than the absolute value of torque instruction limit, the drive's actual torque instruction is limited and equal to the limit value of torque instruction. Otherwise, it is equal to the torque instruction value input by host computer.
1835
1836 At any time, there is only one valid torque limit value. And the positive and negative torque limit values do not exceed the maximum torque of drive and motor and ±300.0% of the rated torque.
1837
1838
1839 [[image:image-20220608172806-39.png]]
1840
1841 Figure 6-44 Torque instruction limit diagram
1842
1843 **(1) Set torque limit source**
1844
1845 You need to set the torque limit source by function code P01-14. After the setting, the drive torque instruction will be limited within the torque limit value. When the torque limit value is reached, the motor will operate with the torque limit value as the torque instruction. The torque limit value should be set according to the load operation requirements. If the setting is too small, the motor's acceleration and deceleration capacity may be weakened. During constant torque operation, the actual motor speed cannot reach the required value.
1846
1847
1848 |**Function code**|**Name**|(((
1849 **Setting method**
1850 )))|(((
1851 **Effective time**
1852 )))|**Default value**|**Range**|**Definition**|**Unit**
1853 |P01-14|(((
1854 Torque limit source
1855 )))|(((
1856 Shutdown setting
1857 )))|(((
1858 Effective immediately
1859 )))|0|0 to 1|(((
1860 0: internal value
1861
1862 1: AI_1 analog input
1863
1864 (not supported by VD2F)
1865 )))|-
1866
1867 1) Torque limit source is internal torque instruction (P01-14=0)
1868
1869 Torque limit source is from inside, you need to set torque limit, and the value is set by function code P01-15 and P01-16.
1870
1871
1872 |**Function code**|**Name**|(((
1873 **Setting method**
1874 )))|(((
1875 **Effective time**
1876 )))|**Default value**|**Range**|**Definition**|**Unit**
1877 |P01-15|(((
1878 Forward torque limit
1879 )))|(((
1880 Operation setting
1881 )))|(((
1882 Effective immediately
1883 )))|3000|0 to 3000|When P01-14 is set to 0, the value of this function code is forward torque limit value|0.1%
1884 |P01-16|(((
1885 Reverse torque limit
1886 )))|(((
1887 Operation setting
1888 )))|(((
1889 Effective immediately
1890 )))|3000|0 to 3000|When P01-14 is set to 0, the value of this function code is reverse torque limit value|0.1%
1891
1892 Table 6-46 Torque limit parameter details
1893
1894 2) Torque limit source is external (P01-14=1)
1895
1896 Torque limit source is from external analog channel. The limit value is determined by the torque value corresponding to external AI_2 terminal.
1897
1898 **(2) Set torque limit DO signal output**
1899
1900 When torque instruction reaches the torque limit value, the drive outputs a torque limit signal (T-LIMIT) for the host computer use. At this time, one DO terminal of the drive should be assigned to function 139 (T-LIMIT, in torque limit) , and confirm that the terminal logic is valid.
1901
1902
1903 |**DO function code**|**Function name**|**Function**
1904 |139|(((
1905 T-LIMIT in torque limit
1906 )))|Output of this signal indicates that the servo motor torque is limited
1907
1908 Table 6-47 DO torque limit function codes
1909
1910 == **Speed limit in torque mode** ==
1911
1912 In torque mode, if the given torque instruction is too large to exceed the load torque of the mechanical side. This would cause the servo motor to continuously accelerate and overspeed. In order to protect the machinery, the speed of the motor must be limited.
1913
1914 In torque mode, the actual motor speed would be in the limited speed. After the speed limit is reached, the motor runs at a constant speed at the speed limit. The running curves are shown as __[[Figure 6-45>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeedlimitintorquemode]]__ and __[[Figure 6-46>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeedlimitintorquemode]]__.
1915
1916 |(((
1917 [[image:image-20220608172910-40.png]]
1918 )))|(((
1919 [[image:image-20220608173155-41.png]]
1920 )))
1921 |Figure 6-45 Forward running curve|Figure 6-46 Reverse running curve
1922
1923 |**Function code**|**Name**|(((
1924 **Setting method**
1925 )))|(((
1926 **Effective time**
1927 )))|**Default value**|**Range**|**Definition**|**Unit**
1928 |P01-17|(((
1929 Forward torque
1930
1931 limit in torque mode
1932 )))|(((
1933 Operation setting
1934 )))|(((
1935 Effective immediately
1936 )))|3000|0 to 5000|(((
1937 Forward torque
1938
1939 limit in torque mode
1940 )))|0.1%
1941 |P01-18|(((
1942 Reverse torque
1943
1944 limit in torque mode
1945 )))|(((
1946 Operation setting
1947 )))|(((
1948 Effective immediately
1949 )))|3000|0 to 5000|(((
1950 Reverse torque
1951
1952 limit in torque mode
1953 )))|0.1%
1954
1955 Table 6-48 Speed limit parameters in torque mode
1956
1957 ✎**Note:** Function codes P01-17 and P01-18 are only effective in limiting motor speed under the torque mode. The speed limit value is set according to load requirements. To set speed limit in speed mode or position mode, please refer to __[[6.3.3 Speed instruction limit>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HSpeedinstructionlimit]]__.
1958
1959 == **Torque-related DO output functions** ==
1960
1961 The feedback value of torque instruction is compared with different thresholds, and could output the DO signal for the host computer use. The DO terminal of the servo drive is assigned to different functions and determine the logic to be valid.
1962
1963 **Torque arrival**
1964
1965 The torque arrival function is used to determine whether the actual torque instruction reaches the set interval. When the actual torque instruction reaches the torque instruction threshold, the servo drive outputs a torque arrival signal (T-COIN) for the host computer use.
1966
1967
1968 [[image:image-20220608173541-42.png]]
1969
1970 Figure 6-47 Torque arrival output diagram
1971
1972 To use the torque arrival function, a DO terminal of the servo drive should be assigned to function 138 (T-COIN, torque arrival). The function code parameters and related DO function codes are shown in __[[Table 6-49>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HTorque-relatedDOoutputfunctions]]__ and __[[Table 6-50>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/#HTorque-relatedDOoutputfunctions]]__.
1973
1974
1975 |**Function code**|**Name**|(((
1976 **Setting method**
1977 )))|(((
1978 **Effective time**
1979 )))|**Default value**|**Range**|**Definition**|**Unit**
1980 |P05-20|(((
1981 Torque arrival
1982
1983 threshold
1984 )))|(((
1985 Operation setting
1986 )))|(((
1987 Effective immediately
1988 )))|100|0 to 300|(((
1989 The torque arrival threshold must be used with “Torque arrival hysteresis value”:
1990
1991 When the actual torque reaches Torque arrival threshold + Torque arrival hysteresis Value, the torque arrival DO is valid;
1992
1993 When the actual torque decreases below torque arrival threshold-torque arrival hysteresis value, the torque arrival DO is invalid
1994 )))|%
1995 |P05-21|(((
1996 Torque arrival
1997
1998 hysteresis
1999 )))|(((
2000 Operation setting
2001 )))|(((
2002 Effective immediately
2003 )))|10|0 to 20|Torque arrival the hysteresis value must be used with Torque arrival threshold|%
2004
2005 Table 6-49 Torque arrival parameters
2006
2007
2008 |**DO function code**|**Function name**|**Function**
2009 |138|(((
2010 T-COIN torque arrival
2011 )))|Used to determine whether the actual torque instruction has reached the set range
2012
2013 Table 6-50 DO Torque Arrival Function Code
2014
2015 = **Mixed control mode** =
2016
2017 Mixed control mode means that when the servo enable is ON and the status of the servo drive is "run", the mode of the servo drive could be switched between different modes. The VD2 series servo drives have the following 3 mixed control modes:
2018
2019 Position mode  Speed mode
2020
2021 Position mode  Torque mode
2022
2023 Speed mode  Torque mode
2024
2025 Set the function code P00-01 through the software of Wecon “SCTool” or servo drive panel, and the servo drive will run in mixed mode.
2026
2027
2028 |**Function code**|**Name**|(((
2029 **Setting method**
2030 )))|(((
2031 **Effective time**
2032 )))|**Default value**|**Range**|**Definition**|**Unit**
2033 |P00-01|Control mode|(((
2034 Shutdown setting
2035 )))|(((
2036 Shutdown setting
2037 )))|1|1 to 6|(((
2038 1: Position control
2039
2040 2: Speed control
2041
2042 3: Torque control
2043
2044 4: Position/speed mixed control
2045
2046 5: Position/torque mixed control
2047
2048 6: Speed/torque mixed control
2049 )))|-
2050
2051 Table 6-51 Mixed control mode parameters
2052
2053 Please set the servo drive parameters in different control modes according to the mechanical structure and indicators. The setting method refer to [[__“Parameters”__>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/09%20Parameters/]]. When function code P00-01=4/5/6 (that is, in mixed mode), a DI terminal of the servo drive needs to be assigned to function 17 (MixModeSel, mixed mode selection), and the DI terminal logic is determined to be valid.
2054
2055
2056 |**DI function code**|**Name**|**Function name**|**Function**
2057 |17|MixModeSel|Mixed mode selection|Used in mixed control mode, when the servo status is "run", set the current control mode of the servo drive(((
2058 |**P00-01**|**MixModeSel terminal logic**|**Control mode**
2059 |(% rowspan="2" %)4|Valid|Speed mode
2060 |invalid|Position mode
2061 |(% rowspan="2" %)5|Valid|Torque mode
2062 |invalid|Position mode
2063 |(% rowspan="2" %)6|Valid|Torque mode
2064 |invalid|Speed mode
2065 )))
2066
2067 Table 6-52 Description of DI function codes in control mode
2068
2069 ✎**Note:** In mixed control mode, it is recommended to switch the mode at zero speed or low speed, and the switching process will be smoother.
2070
2071 = **Absolute system** =
2072
2073 == **Overview** ==
2074
2075 Absolute encoder could detect the position of the servo motor within one turn, and could count the number of turns of the motor. This series of servo drives are equipped with a maximum of 23-bit encoders and could memorize 16-bit multi-turn data, and position, speed, torque control modes could be used. Especially in position control, the absolute value encoder does not need to count, could achieve direct internal high-speed reading and external output, and could significantly reduce the subsequent calculation tasks of the receiving device controller. When the drive is powered off, the encoder uses battery backup data. After power on, the drive uses the encoder's absolute position to calculate the absolute mechanical position, eliminating the need for repeated mechanical origin reset operations.
2076
2077 The absolute value encoder is determined by the mechanical position of the photoelectric code disc, and is not affected by power failure or interference. Each position of the absolute encoder determined by the mechanical position is unique, and no external sensor is required to assist in memorizing position.
2078
2079 == **Single-turn absolute value system** ==
2080
2081 The single-turn absolute value system is applicable for the equipment load stroke within the single-turn range of the encoder. At this time, the absolute encoder is only as a single-turn system function and does not need to be connected to the battery. The types and information of encoders adapted to VD2 series servo drives are shown as below.
2082
2083
2084 |**Encoder type**|**Encoder resolution (bits)**|**Data range**
2085 |A1 (single-turn magnetic encoder)|17|0 to 131071
2086
2087 Table 6-53 Single-turn absolute encoder information
2088
2089 The relationship between encoder feedback position and rotating load position is shown in the figure below. (take a 17-bit encoder as an example).
2090
2091
2092 [[image:image-20220608173618-43.png]]
2093
2094 Figure 6-48 Diagram of relationship between encoder feedback position and rotating load position
2095
2096 == **Multi-turn absolute value system** ==
2097
2098 The encoder adapted to the multi-turn absolute value system is equipped with 16-bit RAM memory. Compared with the single-turn absolute value, it can additionally memorize the number of turns of the 16-bit encoder. The multi-turn absolute encoder is equipped with a battery (the battery is installed on the encoder cable with a battery unit), which can achieve direct internal high-speed readings and external output without the need for external sensors to assist memory positions. The types and information of encoders adapted to VD2 series servo drives are shown as below.
2099
2100
2101 |**Encoder type**|**Encoder resolution (bits)**|**Data range**
2102 |C1 (multi-turn magnetic encoder)|17|0 to 131071
2103 |D2 (multi-turn Optical encoder)|23|0 to 8388607
2104
2105 Table 6-54 Multi-turn absolute encoder information
2106
2107 The relationship between encoder feedback position and rotating load multi-turn is shown in the figure below (take a 23-bit encoder as an example).
2108
2109
2110 [[image:image-20220608173701-44.png]]
2111
2112 Figure 6-49 The relationship between encoder feedback position and rotating load position
2113
2114 == **Encoder feedback data** ==
2115
2116 The feedback data of the absolute value encoder can be divided into the position within 1 turn of the absolute value encoder and the number of rotations of the absolute value encoder. The related information of the two feedback data is shown in the table below.
2117
2118
2119 |**Monitoring number**|**Category**|**Name**|**Unit**|**Data type**
2120 |U0-54|Universal|Absolute encoder position within 1 turn|Encoder unit|32-bit
2121 |U0-55|Universal|Rotations number of absolute encoder|circle|16-bit
2122 |U0-56|Universal|Multi-turn absolute value encoder current position|Instruction unit|32-bit
2123
2124 Table 6-55 Encoder feedback data
2125
2126 == **Absolute value system encoder battery box use precautions** ==
2127
2128 Er.40 (Encoder battery failure) will occur when the battery is turned on for the first time, and the function code P10-03 must be set to 1 to clear the encoder fault to operate the absolute value system again.
2129
2130
2131 [[image:https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/45.jpg?rev=1.1||height="303" width="750"]]
2132
2133 Figure 6-50 the encoder battery box
2134
2135 When it is detected that the battery voltage is less than 3.1V, A-92 (Encoder battery low voltage warning) will occur. Please replace the battery in time. The specific replacement method is as follows:
2136
2137 1. Step1 The servo drive is powered on and is in a non-operational state;
2138 1. Step2 Replace the battery;
2139 1. Step3 Set P10-03 to 1, and the drive will release A-92. It will run normally without other abnormal warnings.
2140
2141 When the servo drive is powered off, if the battery is replaced and powered on again, Er.40 (encoder battery failure) will occur, and the multi-turn data will change suddenly. Please set the function code P10-03 or P10-06 to 1 to clear the encoder fault alarms and perform the origin return function operation again.
2142
2143
2144 |**Function code**|**Name**|(((
2145 **Setting method**
2146 )))|(((
2147 **Effective time**
2148 )))|**Default value**|**Range**|**Definition**|**Unit**
2149 |P10-06|Multi-turn absolute encoder reset|(((
2150 Shutdown setting
2151 )))|(((
2152 Effective immediately
2153 )))|0|0 to 1|(((
2154 0: No operation
2155
2156 1: Clear rotation number of multi-turn absolute encoder, multi-turn absolute encoder current position and encoder fault alarms.
2157
2158 ✎**Note: **After resetting the multi-turn data of the encoder, the encoder absolute position will change suddenly, and the mechanical origin return operation is required.
2159 )))|-
2160
2161 Table 6-56 Absolute encoder reset enable parameter
2162
2163 ✎**Note: **If the battery is replaced when the servo drive is powered off, the encoder data will be lost.
2164
2165 When the servo drive is powered off, please ensure that the maximum speed of motor does not exceed 3000 rpm to ensure that the encoder position information is accurately recorded. Please store the storage device according to the specified ambient temperature, and ensure that the encoder battery has reliable contact and sufficient power, otherwise the encoder position information may be lost.
2166
2167 = **Overview** =
2168
2169 == **VDI** ==
2170
2171 VDI (Virtual Digital Signal Input Port) is similar to hardware DI terminal. The DI function could also be assigned for use.
2172
2173 ✎**Note: **If multiple VDI terminals are configured with the same non-zero DI function, servo drive will occur an error “A-89” (DI port configuration is duplicate).
2174
2175 Take the VDI_1 terminal assignment forward drive prohibition (03-POT) as an example, and the use steps of VDI are as the figure below.
2176
2177
2178 [[image:image-20220608173804-46.png]]
2179
2180 Figure 6-51 VDI_1 setting steps
2181
2182
2183 |**Function code**|**Name**|(((
2184 **Setting method**
2185 )))|(((
2186 **Effective time**
2187 )))|**Default value**|**Range**|**Definition**|**Unit**
2188 |P13-1|Virtual VDI_1 input value|Operation setting|Effective immediately|0|0 to 1|(((
2189 When P06-04 is set to 1, DI_1 channel logic is control by this function code.
2190
2191 VDI_1 input level:
2192
2193 0: low level
2194
2195 1: high level
2196 )))|-
2197 |P13-2|Virtual VDI_2 input value|Operation setting|Effective immediately|0|0 to 1|(((
2198 When P06-07 is set to 1, DI_2 channel logic is control by this function code.
2199
2200 VDI_2 input level:
2201
2202 0: low level
2203
2204 1: high level
2205 )))|-
2206 |P13-3|Virtual VDI_3 input value|Operation setting|Effective immediately|0|0 to 1|(((
2207 When P06-10 is set to 1, DI_3 channel logic is control by this function code.
2208
2209 VDI_3 input level:
2210
2211 0: low level
2212
2213 1: high level
2214 )))|-
2215 |P13-4|Virtual VDI_4 input value|Operation setting|Effective immediately|0|0 to 1|(((
2216 When P06-13 is set to 1, DI_4 channel logic is control by this function code.
2217
2218 VDI_4 input level:
2219
2220 0: low level
2221
2222 1: high level
2223 )))|-
2224 |P13-05☆|Virtual VDI_5 input value|Operation setting|Effective immediately|0|0 to 1|(((
2225 When P06-16 is set to 1, DI_5 channel logic is control by this function code.
2226
2227 VDI_5 input level:
2228
2229 0: low level
2230
2231 1: high level
2232 )))|-
2233 |P13-06☆|Virtual VDI_6 input value|Operation setting|Effective immediately|0|0 to 1|(((
2234 When P06-19 is set to 1, DI_6 channel logic is control by this function code.
2235
2236 VDI_6 input level:
2237
2238 0: low level
2239
2240 1: high level
2241 )))|-
2242 |P13-07☆|Virtual VDI_7 input value|Operation setting|Effective immediately|0|0 to 1|(((
2243 When P06-22 is set to 1, DI_7 channel logic is control by this function code.
2244
2245 VDI_7 input level:
2246
2247 0: low level
2248
2249 1: high level
2250 )))|-
2251 |P13-08☆|Virtual VDI_8 input value|Operation setting|Effective immediately|0|0 to 1|(((
2252 When P06-25 is set to 1, DI_8 channel logic is control by this function code.
2253
2254 VDI_8 input level:
2255
2256 0: low level
2257
2258 1: high level
2259 )))|-
2260
2261 Table 6-57 Virtual VDI parameters
2262
2263 ✎**Note: **“☆” means VD2F servo drive does not support the function code .
2264
2265 == **Port filtering time** ==
2266
2267 VD2A and VD2B servo drives have 8 hardware DI terminals (DI_1 to DI_8) , and VD2F servo drive has 4 hardware DI terminals (DI_1 to DI_4) . All the DI terminals are normal terminals.
2268
2269
2270 |**Setting value**|**DI channel logic selection**|**Illustration**
2271 |0|Active high level|[[image:https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/46.jpg?rev=1.1||height="97" width="307"]]
2272 |1|Active low level|[[image:https://docs.we-con.com.cn/bin/download/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/06%20Operation/WebHome/47.jpg?rev=1.1||height="83" width="305"]]
2273
2274 Table 6-58 DI terminal channel logic selection
2275
2276 == **VDO** ==
2277
2278 In addition to being an internal hardware output port, DO terminal is also used as a communication VDO. The communication control DO function could help you to achieve communication control DO output on the servo drive.
2279
2280 Take the DO_2 terminal as communication VDO, and the use steps of VDI are as the figure below.
2281
2282
2283 [[image:image-20220608173957-48.png]]
2284
2285 Figure 6-52 VDO_2 setting steps
2286
2287
2288 |**Function code**|**Name**|(((
2289 **Setting method**
2290 )))|(((
2291 **Effective time**
2292 )))|**Default value**|**Range**|**Definition**|**Unit**
2293 |P13-11|Communication VDO_1 output value|Operation setting|Effective immediately|0|0 to 1|(((
2294 VDO_1 output level：
2295
2296 0: low level
2297
2298 1: high level
2299 )))|-
2300 |P13-12|Communication VDO_2 output value|Operation setting|Effective immediately|0|0 to 1|(((
2301 VDO_2 output level：
2302
2303 0: low level
2304
2305 1: high level
2306 )))|-
2307 |P13-13|Communication VDO_3 output value|Operation setting|Effective immediately|0|0 to 1|(((
2308 VDO_3 output level：
2309
2310 0: low level
2311
2312 1: high level
2313 )))|-
2314 |P13-14|Communication VDO_4 output value|Operation setting|Effective immediately|0|0 to 1|(((
2315 VDO_4 output level：
2316
2317 0: low level
2318
2319 1: high level
2320 )))|-
2321
2322 Table 6-59 Communication control DO function parameters
2323
2324
2325 |**DO function number**|**Function name**|**Function**
2326 |145|COM_VDO1 communication VDO1 output|Use communication VDO
2327 |146|COM_VDO1 communication VDO2 output|Use communication VDO
2328 |147|COM_VDO1 communication VDO3 output|Use communication VDO
2329 |148|COM_VDO1 communication VDO4output|Use communication VDO
2330
2331 Table 6-60 VDO function number
2332
2333 ✎**Note:** You are advised to configure function codes for DO terminals in sequence to avoid errors during DO signal observation
2334
2335 If multiple DO terminals are configured with the same non-128 DI function, servo drive will occur an error “A-90” (DO port configuration is duplicate).
2336
2337 == **Motor overload protection** ==
2338
2339 VD2 Series absolute encoder (VD2SA) servo drive provides motor overload protection to prevent motor burning due to high temperature. By setting function code P10-04 to modify motor overload alarm (A-82) and motor overload protection fault time (Er.34). The default value of P10-04 is 100%.
2340
2341
2342 |**Function code**|**Name**|(((
2343 **Setting method**
2344 )))|(((
2345 **Effective time**
2346 )))|**Default value**|**Range**|**Definition**|**Unit**
2347 |P10-04|motor overload protection time coefficient|Operation setting|Effective immediately|100|0 to 800|(((
2348 According to the heating condition of the motor, the value could be modified to make the overload protection time float up and down in the reference value.
2349
2350 50 corresponds to 50%, that is, the time is reduced by half. 300 corresponds to 300%, that is, the time extended to 3 times. When the value is set to 0, the overload protection fault detection function is disabled
2351 )))|%
2352
2353 In the following cases, it could be modified according to the actual heat generation of the motor
2354
2355 1. The motor works in a place with high ambient temperature
2356 1. The motor runs in cycle circulates, and the single running cycle is short and the acceleration and deceleration is frequent.
2357
2358 In the case of confirming that the motor will not burn out, it is also possible to shield the overload protection fault detection function (P10-04 set to 0).
2359
2360 ✎**Note:** You are advised to configure function codes for DO terminals in sequence to avoid errors
2361
2362 Please use the shielded overload protection fault detection function with caution, otherwise it will cause burn out the motor.