10 Malfunctions

= **Faults and warnings handling at startup** =

== **Position control mode** ==

|=(% style="text-align: center; vertical-align: middle;" %)**Boot process**|=(% style="text-align: center; vertical-align: middle; width: 213px;" %)**Fault phenomenon**|=(% style="text-align: center; vertical-align: middle; width: 163px;" %)**Reason**|=(% style="text-align: center; vertical-align: middle;" %)**Confirmation method**

6

|(% rowspan="5" style="vertical-align:middle" %)(((

Power supply

(L1, L2, L3)

Turn on control supply (L1C, L2C)

12

)))|(% rowspan="3" style="vertical-align:middle; width:213px" %)(((

13

1. Digital tube does not light up

14

1. Voltage indicator does not light up

15

)))|(% style="vertical-align:middle; width:163px" %)Control terminal is disconnected|(% style="vertical-align:middle" %)(((

16

✎Rewiring

17

18

✎L1C and L2C power lines are led separately from the socket

19

)))

20

|(% style="vertical-align:middle; width:163px" %)Control the supply voltage failure|(% style="vertical-align:middle" %)Measures the AC voltage between L1C &L2C.

21

|(% style="vertical-align:middle; width:163px" %)Servo drive fault|(% style="vertical-align:middle" %)Contact the agent or customer service

22

|(% style="vertical-align:middle; width:213px" %)Panel display “Er.xx”|(% colspan="2" style="vertical-align:middle; width:1118px" %)Refer to [[10.2 Handling of faults and warnings during operation>>||anchor="HFaultsandwarningshandlingduringoperation"]]

23

|(% colspan="3" style="vertical-align:middle" %)After removing the fault, the servo drive panel should display "rdy"

24

|(% rowspan="4" style="vertical-align:middle" %)Servo drive enable signal is valid(S-ON is ON)|(% rowspan="2" style="vertical-align:middle; width:213px" %)The axis of servo motor is in a free running state|(% style="vertical-align:middle; width:163px" %)Servo enable signal is invalid|(% style="vertical-align:middle" %)(((

25

✎Check whether group P06 is set the servo enable signal (DI function 1: S-ON). If it is, check whether the corresponding DI terminal logic is valid. If it is invalid,please make it valid. Refer to __[[Group P06 DI/DO configuration>>https://docs.we-con.com.cn/bin/view/Servo/Manual/02%20VD2%20SA%20Series/09%20Parameters/#HGroupP06DI2FDOconfiguration]]__

26

27

✎If group P06 parameters have set the servo enable signal, and the corresponding terminal logic is valid, but the panel still displays "rdy", check whether the DI terminal wiring is correct, please refer to__[[ 4 Wiring>>doc:Servo.Manual.02 VD2 SA Series.04 Wiring.WebHome]]__

28

)))

29

|(% style="vertical-align:middle; width:163px" %)Control mode error|(% style="vertical-align:middle" %)Check whether the parameter P00-01 is set correctly

30

|(% style="vertical-align:middle; width:213px" %)Panel display Er.xx|(% colspan="2" style="vertical-align:middle; width:1118px" %)Refer to [[10.2 Handling of faults and warnings during operation>>||anchor="HFaultsandwarningshandlingduringoperation"]]

31

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo drive panel should display "run"

32

|(% rowspan="2" style="vertical-align:middle" %)Input position instruction|(% style="vertical-align:middle; width:213px" %)The motor does not rotate|(% style="vertical-align:middle; width:163px" %)U0-09 (input instruction pulse number) always displays 0|(% style="vertical-align:middle" %)✎Not input position instruction(((

33

1. Confirm whether DI terminal uses forward drive prohibited (DI function 3: POT) or reverse drive prohibited (DI function 4: NOT).

34

1. Confirm whether DI terminal uses instruction pulse input prohibited (DI function 11: INH)

35

1. When P01-06=0(position instruction source), PLC or other pulse output device do not output pulse. Please use oscilloscope to check whether there is pulse input or check U0-08 (input instruction pulse frequency). Refer to __4 Wiring__

36

1. When P01-06=1(position instruction source), please check whether the parameters of group P07 are set correctly. If yes, please confirm whether the DI function 20 (internal multi-segment position enable signal) and the corresponding DI terminal logic are set to be valid. Refer to __[[Group P07 multi-segment position>>https://docs.we-con.com.cn/bin/view/Servo/Manual/02%20VD2%20SA%20Series/09%20Parameters/#HGroupP07multi-segmentposition]]__

37

)))

38

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo motor should be able to rotate normally

39

|(% rowspan="3" style="vertical-align:middle" %)The motor does not rotate smoothly at low speed|(% style="vertical-align:middle; width:213px" %)Unstable low speed|(% style="vertical-align:middle; width:163px" %)Unreasonable gain setting|(% style="vertical-align:middle" %)Please adjust the gain.

40

|(% style="vertical-align:middle; width:213px" %)The motor shaft vibrates left and right|(% style="vertical-align:middle; width:163px" %)Load inertia ratio is too large|(% style="vertical-align:middle" %)After the inertia recognition is complete, performs gain adjustment.

41

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo motor should be able to rotate normally

42

|(% style="vertical-align:middle" %)Normal operation|(% style="vertical-align:middle; width:213px" %)Inaccurate positioning|(% style="vertical-align:middle; width:163px" %)There is a position deviation that does not meet production requirements|(% style="vertical-align:middle" %)(((

43

✎Confirm** **the U0-09 value (input instruction pulse number) is consistent with the actual one sent by the host computer. If not, please check confirm whether the motor is blocked.

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45

✎Confirm whether the device is vibrating. If yes, adjust the gain.

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47

✎Confirm whether the coupling at the motor shaft is locked.

48

)))

49

50

== **Speed control mode** ==

51

52

|=(% style="text-align: center; vertical-align: middle;" %)**Boot process**|=(% style="text-align: center; vertical-align: middle;" %)**Fault phenomenon**|=(% style="text-align: center; vertical-align: middle;" %)**Reason**|=(% style="text-align: center; vertical-align: middle;" %)**Confirmation method**

53

|(% rowspan="5" style="vertical-align:middle" %)(((

Power supply

(L1, L2, L3)

Turn on control supply (L1C, L2C)

59

)))|(% rowspan="3" style="vertical-align:middle" %)(((

60

1. Digital tube does not light up

61

1. Voltage indicator does not light up

62

)))|Control terminal is disconnected|(((

63

✎Rewiring

64

65

✎L1C and L2C power lines are led separately from the socket

66

)))

67

|Control the supply voltage failure|Measures the AC voltage between L1C &L2C.

68

|Servo drive fault|Contact the agent or customer service

69

|(% style="vertical-align:middle" %)Panel display “Er.xx”|(% colspan="2" %)Refer to [[10.2 Handling of faults and warnings during operation>>||anchor="HFaultsandwarningshandlingduringoperation"]]

70

|(% colspan="3" style="vertical-align:middle" %)After removing the fault, the servo drive panel should display "rdy"

71

|(% rowspan="4" style="vertical-align:middle" %)Servo drive enable signal is valid(S-ON is ON)|(% rowspan="2" style="vertical-align:middle" %)The axis of servo motor is in a free running state|Servo enable signal is invalid|(((

72

✎Check whether group P06 is set the servo enable signal (DI function 1: S-ON). If it is, check whether the corresponding DI terminal logic is valid. If it is invalid,please make it valid. Refer to __[[Group P06 DI/DO configuration>>https://docs.we-con.com.cn/bin/view/Servo/Manual/02%20VD2%20SA%20Series/09%20Parameters/#HGroupP06DI2FDOconfiguration]]__

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74

✎If group P06 parameters have set the servo enable signal, and the corresponding terminal logic is valid, but the panel still displays "rdy", check whether the DI terminal wiring is correct, please refer to__[[ 4 Wiring>>doc:Servo.Manual.02 VD2 SA Series.04 Wiring.WebHome]]__

75

)))

76

|Control mode error|Check whether the parameter P00-01 is set correctly

77

|(% style="vertical-align:middle" %)Panel display Er.xx|(% colspan="2" %)Refer to [[10.2 Handling of faults and warnings during operation>>||anchor="HFaultsandwarningshandlingduringoperation"]]

78

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo drive panel should display "run"

79

|(% rowspan="2" style="vertical-align:middle" %)Input torque instruction|(% style="vertical-align:middle" %)The motor does not rotate|U0-03 (input instruction pulse number) always displays 0|(((

80

✎AI wiring error

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82

When selecting analog input signal, make sure that the connection of analog input terminal is correct. Refer to__[[ 4 Wiring>>doc:Servo.Manual.02 VD2 SA Series.04 Wiring.WebHome]]__.

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84

✎Not input speed instruction or speed instruction abnormal

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86

1. When selecting analog input signal, please confirm the AI parameters of group P05 is set correct, and then check the analog input voltage signal. It could be observed by oscilloscope or read by monitoring U0-21 and U0-22.

87

1. When the internal speed instruction is given, please confirm P01-02 (internal speed instruction )is 0.

88

1. When using multi-segment speed function, please confirm the internal speed instruction parameters 0 to 7 of group P01 are right.

89

1. Please confirm whether the ZERO-speed clamp function is used for the DI terminal. (DI function 5: ZCLAMP)

90

)))

91

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo motor should be able to rotate normally

92

|(% rowspan="3" style="vertical-align:middle" %)The motor does not rotate smoothly at low speed|(% style="vertical-align:middle" %)Unstable low speed|Unreasonable gain setting|Please adjust the gain.

93

|(% style="vertical-align:middle" %)The motor shaft vibrates left and right|Load inertia ratio is too large|After the inertia recognition is complete, performs gain adjustment.

94

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo motor should be able to rotate normally

95

96

✎**Note: **VD2F does not support monitoring u0-21 and U0-22.

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98

== **Torque control mode** ==

99

100

|=(% style="text-align: center; vertical-align: middle;" %)**Boot process**|=(% style="text-align: center; vertical-align: middle;" %)**Fault phenomenon**|=(% style="text-align: center; vertical-align: middle;" %)**Reason**|=(% style="text-align: center; vertical-align: middle;" %)**Confirmation method**

101

|(% rowspan="5" style="vertical-align:middle" %)(((

Power supply

(L1, L2, L3)

Turn on control supply (L1C, L2C)

107

)))|(% rowspan="3" style="vertical-align:middle" %)(((

108

1. Digital tube does not light up

109

1. Voltage indicator does not light up

110

)))|(% style="vertical-align:middle" %)Control terminal is disconnected|(% style="vertical-align:middle" %)(((

111

✎Rewiring

112

113

✎L1C and L2C power lines are led separately from the socket

114

)))

115

|(% style="vertical-align:middle" %)Control the supply voltage failure|(% style="vertical-align:middle" %)Measures the AC voltage between L1C &L2C.

116

|(% style="vertical-align:middle" %)Servo drive fault|(% style="vertical-align:middle" %)Contact the agent or customer service

117

|(% style="vertical-align:middle" %)Panel display “Er.xx”|(% colspan="2" style="vertical-align:middle" %)Refer to [[10.2 Handling of faults and warnings during operation>>||anchor="HFaultsandwarningshandlingduringoperation"]]

118

|(% colspan="3" style="vertical-align:middle" %)After removing the fault, the servo drive panel should display "rdy"

119

|(% rowspan="4" style="vertical-align:middle" %)Servo drive enable signal is valid(S-ON is ON)|(% rowspan="2" style="vertical-align:middle" %)The axis of servo motor is in a free running state|(% style="vertical-align:middle" %)Servo enable signal is invalid|(% style="vertical-align:middle" %)(((

120

✎Check whether group P06 is set the servo enable signal (DI function 1: S-ON). If it is, check whether the corresponding DI terminal logic is valid. If it is invalid,please make it valid. Refer to __[[Group P06 DI/DO configuration>>https://docs.we-con.com.cn/bin/view/Servo/Manual/02%20VD2%20SA%20Series/09%20Parameters/#HGroupP06DI2FDOconfiguration]]__

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122

✎If group P06 parameters have set the servo enable signal, and the corresponding terminal logic is valid, but the panel still displays "rdy", check whether the DI terminal wiring is correct, please refer to__[[ 4 Wiring>>doc:Servo.Manual.02 VD2 SA Series.04 Wiring.WebHome]]__

123

)))

124

|(% style="vertical-align:middle" %)Control mode error|(% style="vertical-align:middle" %)Check whether the parameter P00-01 is set correctly

125

|(% style="vertical-align:middle" %)Panel display Er.xx|(% colspan="2" style="vertical-align:middle" %)Refer to [[10.2 Handling of faults and warnings during operation>>||anchor="HFaultsandwarningshandlingduringoperation"]]

126

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo drive panel should display "run"

127

|(% rowspan="2" style="vertical-align:middle" %)Input speed instruction|(% style="vertical-align:middle" %)The motor does not rotate|(% style="vertical-align:middle" %)U0-03 (input instruction pulse number) always displays 0|(% style="vertical-align:middle" %)(((

128

✎AI wiring error

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130

When selecting analog input signal, make sure that the connection of analog input terminal is correct. Refer to__[[ 4 Wiring>>doc:Servo.Manual.02 VD2 SA Series.04 Wiring.WebHome]]__.

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132

✎Not input torque instruction

133

134

1. When selecting analog input signal, please confirm the AI parameters of group P05 is set correct, and then check the analog input voltage signal. It could be observed by oscilloscope or read by monitoring U0-21 and U0-22.

135

1. When the internal speed instruction is given, please confirm P01-08 (torque instruction keyboard set value) is 0.

136

)))

137

|(% colspan="3" style="vertical-align:middle" %)After troubleshooting, the servo motor should be able to rotate normally

138

|(% rowspan="3" style="vertical-align:middle" %)The motor does not rotate smoothly at low speed|(% style="vertical-align:middle" %)Unstable low speed|(% style="vertical-align:middle" %)Unreasonable gain setting|(% style="vertical-align:middle" %)Please adjust the gain.

139

|(% style="vertical-align:middle" %)The motor shaft vibrates left and right|(% style="vertical-align:middle" %)Load inertia ratio is too large|(% style="vertical-align:middle" %)After the inertia recognition is complete, performs gain adjustment.

140

|(% colspan="3" %)After troubleshooting, the servo motor should be able to rotate normally

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142

✎**Note: **VD2F does not support monitoring u0-21 and U0-22.

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144

= **Faults and warnings handling during operation ** =

== **Overview** ==

The faults and warnings of Wecon VD2 series servo drives are graded according to their severity, which can be divided into four grades: Category 1, Category 2, Category 3, Category 4. Severity level: Category 1> Category 2> Category 3 > Category 4, the specific classifications are as follows:

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150

* Category 1: faults cannot be cleared;

151

* Category 2: faults are clearable;

152

* Category 3: faults are clearable;

153

* Category 4: warnings are clearable.

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Among them, "clearable" means that the panel stops the fault display state by giving a "clear signal". The specific operations are as follows:

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1. Set the function code P10-03=1 (fault clearing) or use DI function 02 (02-A-CLR, fault and warning clearing) and set it to logic valid, which can stop the fault display on the panel.

158

1. The clearing method of category 2 and category 3 clearable faults: first turn off the servo enable signal (set S-ON to OFF), then set P10-03=1 or use DI function 02.

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1. The clearing method of category 4 of clearable warnings: set P10-03=1 or use DI function 02.

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161

|(% style="text-align:center; vertical-align:middle" %)(((

162

(% style="text-align:center" %)

163

[[image:ksjakfjk.png]]

164

)))

165

|For some faults and warnings, you must change the settings to eliminate the causes before they can be cleared, but clearing does not mean that the changes take effect. For the changes that need to be re-powered to take effect, the power must be re-powered. For the changes that need to be stopped to take effect, the servo enable must be turned off. After the change takes effect, the servo drive can operate normally.

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167

Associated function codes

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169

|=(% style="text-align: center; vertical-align: middle; width: 131px;" %)**Function Code**|=(% style="text-align: center; vertical-align: middle; width: 160px;" %)**Name**|=(% style="text-align: center; vertical-align: middle; width: 172px;" %)(((

170

**Setting method**

171

)))|=(% style="text-align: center; vertical-align: middle; width: 181px;" %)(((

172

**Effective time**

173

)))|=(% style="text-align: center; vertical-align: middle; width: 138px;" %)**Default value**|=(% style="text-align: center; vertical-align: middle; width: 96px;" %)**Range**|=(% style="text-align: center; vertical-align: middle; width: 552px;" %)**Definition**|=(% style="text-align: center; vertical-align: middle;" %)**Unit**

174

|(% style="text-align:center; vertical-align:middle; width:131px" %)P10-03|(% style="text-align:center; vertical-align:middle; width:160px" %)Fault clearing|(% style="text-align:center; vertical-align:middle; width:172px" %)(((

175

Operation setting

176

)))|(% style="text-align:center; vertical-align:middle; width:181px" %)(((

177

immediately Effective

178

)))|(% style="text-align:center; vertical-align:middle; width:138px" %)0|(% style="text-align:center; vertical-align:middle; width:96px" %)0 to 1|(% style="width:552px" %)(((

179

0: No operation

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181

1: For clearable faults, after the cause of fault is removed, and write 1 to the function code, the drive will stop the fault display and enter the Rdy (or RUN) state again.

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183

✎**Note:** If the servo S-ON is valid, when the fault is removed and cleared, the servo will directly enter the Run state. When performing fault clearing actions, be sure to stop sending control instructions such as pulses to ensure personal safety.

184

)))|(% style="text-align:center; vertical-align:middle" %)-

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186

Associated function number:

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188

|(% style="text-align:center; vertical-align:middle" %)**Code**|(% style="text-align:center; vertical-align:middle; width:108px" %)**Name**|(% style="text-align:center; vertical-align:middle; width:303px" %)**Function name**|(% style="text-align:center; vertical-align:middle; width:779px" %)**Function**

189

|(% style="text-align:center; vertical-align:middle" %)2|(% style="text-align:center; vertical-align:middle; width:108px" %)A-CLR|(% style="text-align:center; vertical-align:middle; width:303px" %)Fault and warning clearing|(% style="width:779px" %)(((

190

DI port logic is invalid, no reset faults and warnings

191

192

DI port logic is valid, reset faults and warnings

193

)))

194

195

VD2 series servo drives have a fault recording function, which could record the last 5 faults and the last 5 warning names and the status parameters of servo drive when the fault or warning occurs. After the fault or warning is cleared, the fault record will still save the fault and warning.

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The current fault code could be viewed through the monitoring parameter U1-01, and the current warning code could be viewed through U1-02. The monitoring U1-16 to U1-25 could display the last 5 fault codes and warning codes. Please refer to __[[Group U1 Warning monitoring>>https://docs.we-con.com.cn/bin/view/Servo/Manual/02%20VD2%20SA%20Series/09%20Parameters/#HGroupU1Warningmonitoring]]__.

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== **Fault and warning code table** ==

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**The first category (category 1 for short) The fault could not be cleared**

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203

|=(% style="width: 114px;" %)**Category**|=(% style="width: 300px;" %)**Error name**|=(% style="width: 92px;" %)**Fault code**|=(% style="width: 330px;" %)**Content**|=(% style="width: 105px;" %)**Whether Clearable**|=(% style="width: 135px;" %)**Operation**

|(% style="width:114px" %)Category 1|(% style="width:300px" %)AD current sampling conversion error|(% style="width:92px" %)Er.04|(% style="width:330px" %)AD current sampling conversion error|(% style="width:105px" %)No|(% style="width:135px" %)Stop immediately

|(% style="width:114px" %)Category 1|(% style="width:300px" %)(((

Exceeds motor

maximum speed

)))|(% style="width:92px" %)Er.32|(% style="width:330px" %)(((

Exceeds motor

maximum speed

)))|(% style="width:105px" %)No|(% style="width:135px" %)Stop immediately

230

231

|(% style="width:114px" %)Category 1|(% style="width:300px" %)The brake resistor is turned on abnormally|(% style="width:92px" %)Er.24|(% style="width:330px" %)The brake resistor of servo drive is turned on abnormally|(% style="width:105px" %)No|(% style="width:135px" %)Stop immediately

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233

**The 2nd category (category 2 for short) clearable faults**

**The 3rd Category (category 3 for short) clearable faults**

|(% style="width:109px" %)Category 3|(% style="width:277px" %)(((

251

Main circuit electricity

is lack of phase

)))|Er.38|(((

Main circuit electricity

256

257

is lack of phase

258

)))|Yes|Stop immediately

**The 4th category (category 4 for short) clearable warnings**

|(% style="width:100px" %)Category 4|(% style="width:294px" %)Braking resistor is over temperature or overloaded|A-83|(% style="width:392px" %)Braking resistor is over temperature or overloaded|(% style="width:96px" %)Yes|(% style="width:115px" %)Continue to run

272

|(% style="width:100px" %)Category 4|(% style="width:294px" %)Parameter modification that needs to be powered on again|A-84|(% style="width:392px" %)Modify the parameter that needs to be powered on again|(% style="width:96px" %)Yes|(% style="width:115px" %)Continue to run

273

|(% style="width:100px" %)Category 4|(% style="width:294px" %)Receive position pulse when servo is OFF|A-85|(% style="width:392px" %)Servo drive receives position pulse when it is OFF|(% style="width:96px" %)Yes|(% style="width:115px" %)Continue to run

274

275

|(% style="width:100px" %)Category 4|(% style="width:294px" %)(((

276

Main circuit momentary

277

278

power off

279

)))|A-88|(% style="width:392px" %)(((

280

Main circuit momentary

281

282

power off

283

)))|(% style="width:96px" %)Yes|(% style="width:115px" %)Continue to run

|(% style="width:100px" %)Category 4|(% style="width:294px" %)(((

288

low encoder battery voltage

289

290

Warning

291

)))|A-92|(% style="width:392px" %)The battery voltage of encoder is less than 3.1V|(% style="width:96px" %)Yes|(% style="width:115px" %)Continue to run

292

|(% style="width:100px" %)Category 4|(% style="width:294px" %)(((

293

Encoder read and write

294

295

check abnormal and frequency is too high

296

)))|A-93|(% style="width:392px" %)(((

297

Encoder read and write

298

299

check abnormal and frequency is too high

300

)))|(% style="width:96px" %)Yes|(% style="width:115px" %)Continue to run

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302

= **Troubleshooting** =

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**Er.01 Parameter destruction**

Fault

|=(% style="width: 460px;" %)**Servo drive panel display**|=(% style="width: 615px;" %)**Fault name**

309

|(% style="width:460px" %)(((

310

(% style="text-align:center" %)

311

[[image:image-20220709173736-1.png]]

312

)))|(% style="width:615px" %)Parameter destruction

Troubleshooting

|=(% style="width: 310px;" %)**Reason**|=(% style="width: 516px;" %)**Troubleshooting methods**|=(% style="width: 250px;" %)**Handling**

317

|(% style="width:310px" %)EEPROM could not be read and written|(% style="width:516px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:250px" %)Please contact the technician.

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319

**Er.02 Parameter storage error**

Fault

|=(% style="width: 604px;" %)**Servo drive panel display**|=(% style="width: 817px;" %)**Fault name**

324

|(% style="width:604px" %)(((

325

(% style="text-align:center" %)

326

[[image:image-20220709165407-2.png]]

327

)))|(% style="width:817px" %)Parameter storage error

Troubleshooting

|=(% style="width: 245px;" %)**Reason**|=(% style="width: 423px;" %)**Troubleshooting methods**|=(% style="width: 408px;" %)**Handling**

332

|(% style="width:245px" %)Firmware upgraded|(% style="width:423px" %)Check whether the program has been upgraded.|(% style="width:408px" %)Power on the servo drive again

333

|(% style="width:245px" %)Parameter read and write exceptions|(% style="width:423px" %)After a parameter is changed, power it on again and check whether the parameter is saved|(% style="width:408px" %)If the parameters are not saved after multiple power-on, contact technician.

334

|(% style="width:245px" %)Servo drive firmware faulty|(% style="width:423px" %)(((

335

Check if the servo drive monitoring quantity U2-04 (firmware version) is in the following range.

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337

VD2-0xxSA1G model: earlier than V1.14.

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339

VD2F-0xxSA1P model: earlier than V1.02

340

)))|(% style="width:408px" %)(((

341

VD2-0xxSA1G model: Contact manufacturer to upgrade the firmware to V1.14 and above.

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343

VD2F-0xxSA1P model: Contact technician to upgrade the firmware to V1.02 and above.

344

)))

345

346

**Er.03 ADC reference source fault**

Fault

|=(% style="width: 459px;" %)**Servo drive panel display**|=(% style="width: 617px;" %)**Fault name**

351

|(% style="width:459px" %)(((

352

(% style="text-align:center" %)

353

[[image:image-20220709165412-3.png]]

354

)))|(% style="width:617px" %)ADC reference source fault

Troubleshooting

|=(% style="width: 284px;" %)**Reason**|=(% style="width: 495px;" %)**Troubleshooting methods**|=(% style="width: 297px;" %)**Handling**

359

|(% style="width:284px" %)The internal analog reference source of the drive is not accurate|(% style="width:495px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:297px" %)If there is still alarm after multiple power-on, contact the technician.

360

361

**Er.04 AD current sampling conversion error**

Fault

|=**Servo drive panel display**|=**Fault name**

366

|(((

367

(% style="text-align:center" %)

368

[[image:image-20220709165421-4.png]]

369

)))|AD current sampling conversion error

Troubleshooting

|=(% style="width: 248px;" %)**Reason**|=(% style="width: 508px;" %)**Troubleshooting methods**|=(% style="width: 320px;" %)**Handling**

374

|(% style="width:248px" %)Current sampling timeout|(% rowspan="2" style="width:508px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% rowspan="2" style="width:320px" %)If there is still alarm after multiple power-on, contact the technician.

375

|(% style="width:248px" %)current sensor error

376

377

**Er.05 FPGA communication abnormal**

Fault

|=(% style="width: 467px;" %)**Servo drive panel display**|=(% style="width: 608px;" %)**Fault name**

382

|(% style="width:467px" %)(((

383

(% style="text-align:center" %)

384

[[image:image-20220709165428-5.png]]

385

)))|(% style="width:608px" %)FPGA communication abnormal

Troubleshooting

|=(% style="width: 253px;" %)**Reason**|=(% style="width: 504px;" %)**Troubleshooting methods**|=**Handling**

390

|(% style="width:253px" %)FPGA communication abnormal|(% style="width:504px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|If there is still alarm after multiple power-on, contact the technician.

391

392

**Er.06 Wrong FPGA program version**

Fault

|=(% style="width: 460px;" %)**Servo drive panel display**|=(% style="width: 615px;" %)**Fault name**

397

|(% style="width:460px" %)(((

398

(% style="text-align:center" %)

399

[[image:image-20220709165434-6.png]]

400

)))|(% style="width:615px" %)Wrong FPGA program version

Troubleshooting

|=**Reason**|=(% style="width: 482px;" %)**Troubleshooting methods**|=(% style="width: 327px;" %)**Handling**

405

|The FPGA program version does not match firmware version|(% style="width:482px" %)Check whether the monitoring quantity of servo drive U2-04 (firmware version) and U2-05 (hardware version) conform to the following table|(% style="width:327px" %)Contact technical to upgrade FPGA (hardware version)

406

|Servo drive fault|(% style="width:482px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:327px" %)If there is still alarm after multiple power-on, contact the technician.

407

408

|=**Firmware version**|=**Hardware version**

|1.00|1.00

|1.10|1.01

|1.11|1.01

|1.12|1.01

|1.13|1.01

|1.14|1.01

Table 10-1 The firmware version and hardware version relationship of VD2-0SA1G servo drive

417

418

**Er.07 Clock abnormal**

Fault

|=(% style="width: 475px;" %)**Servo drive panel display**|=(% style="width: 600px;" %)**Fault name**

423

|(% style="width:475px" %)(((

424

(% style="text-align:center" %)

425

[[image:image-20220709165440-7.png]]

426

)))|(% style="width:600px" %)Clock abnormal

Troubleshooting

|=(% style="width: 226px;" %)**Reason**|=(% style="width: 492px;" %)**Troubleshooting methods**|=(% style="width: 358px;" %)**Handling**

431

|(% rowspan="2" style="width:226px" %)External interference|(% style="width:492px" %)Check for strong magnetic fields nearby|(% style="width:358px" %)Eliminate nearby strong magnetic interference

432

|(% style="width:492px" %)Check whether there are sources of interference such as power supply inverter equipment nearby|(% style="width:358px" %)Separate strong and weak power as much as possible, with good ground contact between motor and servo drive, and keep away from power cable wiring.

433

|(% style="width:226px" %)Servo drive fault|(% style="width:492px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:358px" %)If there is still alarm after multiple power-on, contact the technician.

434

435

**Er.20 Overcurrent**

Fault

|=(% style="width: 470px;" %)**Servo drive panel display**|=(% style="width: 605px;" %)**Fault name**

440

|(% style="width:470px" %)(((

441

(% style="text-align:center" %)

442

[[image:image-20220709165445-8.png]]

443

)))|(% style="width:605px" %)Overcurrent

Troubleshooting

|=(% style="width: 249px;" %)**Reason**|=(% style="width: 481px;" %)**Troubleshooting methods**|=(% style="width: 346px;" %)**Handling**

448

|(% style="width:249px" %)The UVW phase sequence of motor power cable is incorrect|(% style="width:481px" %)Check whether the phase sequence of the motor power cable on the servo drive side and motor side corresponds to each other.|(% style="width:346px" %)Connect correctly according to UVW on the drive side and UVW on the motor side

449

|(% style="width:249px" %)Motor power lines are short-circuited|(% style="width:481px" %)Check whether power line UVW is short-circuited to PE|(% style="width:346px" %)Replace motor power line

450

|(% style="width:249px" %)The motor power line wiring port is poorly contacted|(% style="width:481px" %)Check whether the motor power line connection port is connected reliably|(% style="width:346px" %)Tighten the fixing screws of the motor power line connection ports

451

|(% rowspan="4" style="width:249px" %)Abnormal braking resistance|(% style="width:481px" %)Internal brake resistance wiring error: check whether C, D are connected to the short cap and the contact is normal|(% style="width:346px" %)Connect the short cap or short wire between C and D reliably

452

|(% style="width:481px" %)External braking resistor wiring error: Check whether the external resistor is connected reliably between P+ and C.|(% style="width:346px" %)External braking resistance is reliably strung between P+ and C

453

|(% style="width:481px" %)Short-circuit of the built-in brake resistance: Check whether the built-in brake resistance is short-circuit.|(% style="width:346px" %)(((

454

Remove the shorting cap between C and D, and reliably string the external braking resistor of equal resistance between P+ and C.

455

456

Contact technician to replace the internal braking resistor

457

)))

458

|(% style="width:481px" %)The resistance value of the external braking resistor is too small: Test the resistance value of the external braking resistor actually selected and compare it with the recommended braking resistor to confirm whether the resistance value of the actual resistor is too small|(% style="width:346px" %)Choose a suitable external braking resistor

459

|(% rowspan="3" style="width:249px" %)Encoder wiring error; loose plug|(% style="width:481px" %)Check whether the cable port (CN1) of the encoder is properly connected|(% style="width:346px" %)Tighten the fixing screws on the CN1 port

460

|(% style="width:481px" %)Check whether the servo drive CN1 port jack is deformed|(% style="width:346px" %)If the cable is deformed, replace the cable or its port

461

|(% style="width:481px" %)Check whether both ends of the rectangular connector are reliably connected|(% style="width:346px" %)Make sure that both ends of the rectangular connector are connected reliably; Replace it with an encoder cable with higher connection reliability.

462

|(% rowspan="2" style="width:249px" %)Unreasonable parameter settings|(% style="width:481px" %)Check whether P03-02 (Load rigidity Level) is set properly|(% style="width:346px" %)Reduce the P03-02 (load stiffness level) setting value appropriately

463

|(% style="width:481px" %)Check whether the gain parameters are set properly, resulting in overshoot|(% style="width:346px" %)Adjust gain parameters reasonably

464

|(% style="width:249px" %)Frequent acceleration and deceleration|(% style="width:481px" %)Check whether the acceleration and deceleration motion is frequent or the acceleration and deceleration time is too small|(% style="width:346px" %)Appropriately extend the acceleration and deceleration time

465

|(% style="width:249px" %)Internal servo drive fault|(% style="width:481px" %)Cross-verification. Use the normal motor, encoder cable to connect to the servo drive, only connect the encoder cable. If the servo drive still alarm, it is failure.|(% style="width:346px" %)Contact technician for repair

466

467

**Er.21 Main power supply undervoltage**

Fault

|=(% style="width: 467px;" %)**Servo drive panel display**|=(% style="width: 608px;" %)**Fault name**

472

|(% style="width:467px" %)(((

473

(% style="text-align:center" %)

474

[[image:image-20220709165459-10.png]]

475

)))|(% style="width:608px" %)Main power supply undervoltage

476

477

Reason: DC bus voltage is lower than the fault value.

478

479

* 220V drive: DC bus voltage normal value is 310V; DC bus voltage fault value is 200V.

480

* 380V drive: DC bus voltage normal value is 540V; DC bus voltage fault value is 420V.

Troubleshooting

|=(% style="width: 255px;" %)**Reason**|=(% style="width: 466px;" %)**Troubleshooting methods**|=(% style="width: 355px;" %)**Handling**

485

|(% style="width:255px" %)Power-off when VD2A drive is enabled|(% style="width:466px" %)Check whether the servo drive is Power off when logic is valid.and the S-ON function is enabled in the P06 “DIDO Function configuration parameter”.|(% style="width:355px" %)It belongs to servo internal software logic. When the indicator light on the servo drive panel goes out automatically, the alarm will be removed automatically.

486

|(% style="width:255px" %)The power supply is unstable or OFF.|(% style="width:466px" %)Check whether the drive input power specifications meet the following specifications:

487

220V drive: Valid value is 198V to 242V.

488

380V drive: Valid value is 342V to 440V.|(% style="width:355px" %)Use after the power supply is stable;

489

Increase power supply capacity

490

|(% style="width:255px" %)The voltage drops during operation of the servo drive|(% style="width:466px" %)Check whether the servo drive shares the same power supply with other high loads|(% style="width:355px" %)(((

491

Turn off other loads from the same main circuit power supply.

492

493

Separate power supply for servo drives

494

)))

495

|(% style="width:255px" %)Missing phase (3-phase power supply operating on single-phase power)|(% style="width:466px" %)(((

496

Check if the main circuit wiring is correct

497

498

VD2A: single-phase 220V input connected to L1, L3.

499

500

VD2 B: single-phase 220V input connected to L1, L3, and single-phase 220V input connected to L1C, L2C.

501

502

VD2 B: three-phase 220V input connected to L1, L2, L3.

503

504

VD2F: single-phase 220V input connected to L1, L2

505

)))|(% style="width:355px" %)Connect the main circuit wiring correctly

506

|(% style="width:255px" %)Internal servo drive fault|(% style="width:466px" %)Observe whether the monitoring quantity U0-31 (bus voltage) is in the following range:

507

220V drive: U0-31 less than 200V;

508

380V drive: U0-31 less than 400V.|(% style="width:355px" %)Contact technician for repair

509

510

**Er.22 Main power supply overvoltage**

Fault

|=(% style="width: 457px;" %)**Servo drive panel display**|=(% style="width: 618px;" %)**Fault name**

515

|(% style="width:457px" %)(((

516

(% style="text-align:center" %)

517

[[image:image-20220709165541-11.png]]

518

)))|(% style="width:618px" %)Main power supply overvoltage

519

520

Reason: DC bus voltage is bigger than the fault value.

521

522

1. 220V drive: DC bus voltage normal value is 310V; DC bus voltage fault value is 390V.

523

1. 380V drive: DC bus voltage normal value is 540V; DC bus voltage fault value is 670V.

Troubleshooting

|=(% style="width: 236px;" %)**Reason**|=(% style="width: 476px;" %)**Troubleshooting methods**|=(% style="width: 364px;" %)**Handling**

528

|(% style="width:236px" %)The input voltage is too high|(% style="width:476px" %)Check whether the drive input power specifications meet the following specifications:

529

220V drive: Valid value is 198V to 242V.

530

380V drive: Valid value is 342V to 440V.|(% style="width:364px" %)Replace or adjust power supply

531

|(% style="width:236px" %)The power supply is not stable or struck by lightning|(% style="width:476px" %)Check whether the input power supply of the servo drive meets the specifications and monitor whether it has been struck by lightning.|(% style="width:364px" %)(((

532

used after the power supply is stable

533

534

Connect to surge suppressor

535

)))

536

|(% rowspan="4" style="width:236px" %)Abnormal braking resistance|(% style="width:476px" %)Internal brake resistance wiring error: check whether C, D are connected to the short cap and the contact is normal|(% style="width:364px" %)Connect the short cap or short wire between C and D reliably

537

|(% style="width:476px" %)External braking resistor wiring error: Check whether the external resistor is connected reliably between P+ and C.|(% style="width:364px" %)External braking resistance is reliably strung between P+ and C

538

|(% style="width:476px" %)Short-circuit of the built-in brake resistance: Check whether the built-in brake resistance is short-circuit.|(% style="width:364px" %)(((

539

Remove the shorting cap between C and D, and reliably string the external braking resistor of equal resistance between P+ and C.

540

541

Contact technician to replace the internal braking resistor

542

)))

543

|(% style="width:476px" %)The resistance value of the external braking resistor is too large: Check the resistance value of the external braking resistor actually selected and compare it with the recommended braking resistor to confirm whether the resistance value of the actual resistor is too large.|(% style="width:364px" %)Choose a suitable external braking resistor

544

|(% style="width:236px" %)The motor is in a state of rapid acceleration and deceleration motion|(% style="width:476px" %)Monitor the servo drive monitoring quantity U0-31 (bus voltage) to confirm whether the voltage exceeds the fault value when the motor is in the deceleration section.|(% style="width:364px" %)Ensure that the input voltage is within specification and increase acceleration and deceleration times

545

|(% style="width:236px" %)Internal servo drive fault|(% style="width:476px" %)The servo drive is still faulty after power on again|(% style="width:364px" %)Servo drive may be damaged.Contact technician for repair

546

547

**Er.23 Braking resistor is not connected**

Fault

|=(% style="width: 464px;" %)**Servo drive panel display**|=(% style="width: 611px;" %)**Fault name**

552

|(% style="width:464px" %)(((

553

(% style="text-align:center" %)

554

[[image:image-20220709165550-12.png]]

555

)))|(% style="width:611px" %)Braking resistor is not connected

Troubleshooting

|=(% style="width: 244px;" %)**Reason**|=(% style="width: 440px;" %)**Troubleshooting methods**|=(% style="width: 392px;" %)**Handling**

560

|(% style="width:244px" %)Internal brake resistance wiring error|(% style="width:440px" %)Check whether C, D are connected to the short cap and the contact is normal|(% style="width:392px" %)When using an internal braking resistor, reliably connect the shorting cap or shorting wire between C and D

561

|(% style="width:244px" %)External braking resistor wiring error|(% style="width:440px" %)Check whether the external resistor is connected reliably between P+ and C.|(% style="width:392px" %)When using an external braking resistor, the external resistor is reliably strung between P+ and C

562

|(% style="width:244px" %)Internal braking resistor damaged|(% style="width:440px" %)The servo drive is powered off. Detects whether the resistance between P+ and D is 50Ω|(% style="width:392px" %)(((

563

Contact the technician to replace the internal braking resistor.

564

565

Use an external braking resistor and change the relevant parameters of the P00 "Basic Settings".

566

)))

567

568

**Er.24 Braking resistor turns on abnormally**

Fault

|=**Servo drive panel display**|=**Fault name**

573

|(((

574

(% style="text-align:center" %)

575

[[image:image-20220709163326-60.png]]

576

)))|Braking resistor is not connected

Troubleshooting

|=(% style="width: 236px;" %)**Reason**|=(% style="width: 460px;" %)**Troubleshooting methods**|=(% style="width: 380px;" %)**Handling**

581

|(% style="width:236px" %)Internal servo drive fault|(% style="width:460px" %)The servo drive is still faulty after power on again|(% style="width:380px" %)Servo drive may be damaged.Contact technician for repair

582

583

**Er.25 Braking resistor resistance is too large**

Fault

|=**Servo drive panel display**|=**Fault name**

588

|(((

589

(% style="text-align:center" %)

590

[[image:image-20220709165610-14.png]]

591

)))|Braking resistor resistance is too large

Troubleshooting

|=(% style="width: 239px;" %)**Reason**|=(% style="width: 475px;" %)**Troubleshooting methods**|=(% style="width: 362px;" %)**Handling**

596

|(% style="width:239px" %)The resistance value of the external braking resistor is too large|(% style="width:475px" %)Check the resistance value of the external braking resistor actually selected and compare it with the recommended braking resistor to confirm whether the resistance value of the actual resistor is too large.|(% style="width:362px" %)Choose a suitable external braking resistor

597

|(% style="width:239px" %)Unreasonable parameter settings|(% style="width:475px" %)Check whether the value of servo drive P00-10 (external brake resistance) is set too high|(% style="width:362px" %)Reasonably set the P00-10 (external braking resistor resistance) parameter value

598

|(% style="width:239px" %)Servo drive firmware fault|(% style="width:475px" %)(((

599

Check if the servo drive monitoring quantity U2-04 (firmware version) is in the following range.

600

601

VD2-0xxSA1G model: earlier than V1.14.

602

603

VD2F-0xxSA1P model: earlier than V1.02

604

)))|(% style="width:362px" %)(((

605

VD2-0xxSA1G model: Contact manufacturer to upgrade the firmware to V1.14 and above.

606

607

VD2F-0xxSA1P model: Contact technician to upgrade the firmware to V1.02 and above.

608

)))

609

610

**Er.26 Braking resistor resistance is too large**

Fault

|=**Servo drive panel display**|=**Fault name**

615

|(((

616

(% style="text-align:center" %)

617

[[image:image-20220709165622-15.png]]

)))|Motor code wrong

Troubleshooting

|=(% style="width: 242px;" %)**Reason**|=(% style="width: 456px;" %)**Troubleshooting methods**|=(% style="width: 378px;" %)**Handling**

623

|(% style="width:242px" %)Servo drives do not support this motor|(% style="width:456px" %)Check whether the servo driver model supports the motor|(% style="width:378px" %)Contact technical for suitable recommendations of servo drive model or motor model.

624

|(% style="width:242px" %)Wrong motor model|(% style="width:456px" %)Check whether the Motor Code is consistent with the Motor nameplate|(% style="width:378px" %)Contact technician to record the motor Motor Code

625

626

**Er.27 Encoder disconnection**

Fault

|=(% style="width: 466px;" %)**Servo drive panel display**|=(% style="width: 609px;" %)**Fault name**

631

|(% style="width:466px" %)(((

632

(% style="text-align:center" %)

633

[[image:image-20220709165628-16.png]]

634

)))|(% style="width:609px" %)Encoder disconnection

Troubleshooting

|=(% style="width: 254px;" %)**Reason**|=(% style="width: 436px;" %)**Troubleshooting methods**|=(% style="width: 386px;" %)**Handling**

639

|(% rowspan="2" style="width:254px" %)Poor contact on CN1 port|(% style="width:436px" %)Check whether the cable port (CN1) of the encoder is properly connected|(% style="width:386px" %)Tighten the fixing screws on the CN1 port

640

|(% style="width:436px" %)Check whether the servo drive CN1 port jack is deformed|(% style="width:386px" %)If the cable is deformed, replace the cable or its port

641

|(% style="width:254px" %)Poor contact on adapter port (Rectangular connection cable)|(% style="width:436px" %)Check whether both ends of the rectangular connector are reliably connected|(% style="width:386px" %)Make sure that both ends of the rectangular connector are connected reliably; Replace it with an encoder cable with higher connection reliability.

642

|(% style="width:254px" %)Wrong encoder cable wiring|(% style="width:436px" %)Check whether the both ends of the encoder cable are correctly connected|(% style="width:386px" %)Adjust wiring according to the corresponding relationship of pins;

643

The standard encoder cable of the manufacturer is preferred.

644

645

**Er.28 Encoder Z pulse lost**

Fault

|=(% style="width: 463px;" %)**Servo drive panel display**|=(% style="width: 612px;" %)**Fault name**

650

|(% style="width:463px" %)(((

651

(% style="text-align:center" %)

652

[[image:image-20220709165633-17.png]]

653

)))|(% style="width:612px" %)Encoder Z pulse lost

Troubleshooting

|=(% style="width: 227px;" %)**Reason**|=(% style="width: 448px;" %)**Troubleshooting methods**|=(% style="width: 401px;" %)**Handling**

658

|(% style="width:227px" %)Wrong motor model|(% style="width:448px" %)Check whether the Motor Code is consistent with the Motor nameplate|(% style="width:401px" %)Contact technician to record the motor Motor Code

659

|(% rowspan="2" style="width:227px" %)External interference|(% style="width:448px" %)Check for strong magnetic fields nearby|(% style="width:401px" %)Eliminate nearby strong magnetic interference

660

|(% style="width:448px" %)Check whether there are sources of interference such as power supply inverter equipment nearby|(% style="width:401px" %)Separate strong and weak power as much as possible, with good ground contact between motor and servo drive, and keep away from power cable wiring.

661

|(% style="width:227px" %)Encoder fault|(% style="width:448px" %)Manually rotate the motor shaft counterclockwise or clockwise to observe whether the monitoring quantity U0-30 (electrical angle) changes regularly|(% style="width:401px" %)If the value of U0-30 (electrical angle) changes abruptly or does not change, the encoder itself may have problems, please replace the motor or encoder.

662

663

**Er.30 Encoder UVW signal error**

Fault

|=(% style="width: 470px;" %)**Servo drive panel display**|=(% style="width: 605px;" %)**Fault name**

668

|(% style="width:470px" %)(((

669

(% style="text-align:center" %)

670

[[image:image-20220709165638-18.png]]

671

)))|(% style="width:605px" %)Encoder UVW signal error

Troubleshooting

|=(% style="width: 212px;" %)**Reason**|=(% style="width: 463px;" %)**Troubleshooting methods**|=(% style="width: 401px;" %)**Handling**

676

|(% style="width:212px" %)External interference|(% style="width:463px" %)Check that the motor and servo drive are well grounded|(% style="width:401px" %)Motor and servo drive are well grounded

677

|(% style="width:212px" %)Encoder cable fault|(% style="width:463px" %)Cross-verification. Use the normal motor, encoder cable to connect to the servo drive.|(% style="width:401px" %)Replace it with an encoder cable with higher connection reliability.

678

|(% style="width:212px" %)Servo drive fault|(% style="width:463px" %)The servo drive is still faulty after power on again|(% style="width:401px" %)Servo drive may be damaged.Contact technician for repair

679

680

**Er.31 Power line disconnection**

Fault

|=(% style="width: 468px;" %)**Servo drive panel display**|=(% style="width: 607px;" %)**Fault name**

685

|(% style="width:468px" %)(((

686

(% style="text-align:center" %)

687

[[image:image-20220709165643-19.png]]

688

)))|(% style="width:607px" %)Power line disconnection

Troubleshooting

|=(% style="width: 248px;" %)**Reason**|=(% style="width: 397px;" %)**Troubleshooting methods**|=(% style="width: 431px;" %)**Handling**

693

|(% style="width:248px" %)The motor power line wiring port is poorly contacted|(% style="width:397px" %)Check whether the motor power line connection port is connected reliably|(% style="width:431px" %)Tighten the fixing screws of the motor power line connection ports

694

|(% style="width:248px" %)The power cable is disconnected|(% style="width:397px" %)Check the power cable for disconnections at both ends|(% style="width:431px" %)Replace the power cable and power on again.

695

|(% style="width:248px" %)Poor contact on adapter port (Rectangular connection cable)|(% style="width:397px" %)Check whether both ends of the rectangular connector are reliably connected|(% style="width:431px" %)Make sure that both ends of the rectangular connector are connected reliably; Replace it with an encoder cable with higher connection reliability.

696

697

**Er.32 Exceeds motor maximum speed**

Fault

|=(% style="width: 465px;" %)**Servo drive panel display**|=(% style="width: 610px;" %)**Fault name**

702

|(% style="width:465px" %)(((

703

(% style="text-align:center" %)

704

[[image:image-20220709165647-20.png]]

705

)))|(% style="width:610px" %)Exceeds motor maximum speed

Troubleshooting

|=(% style="width: 300px;" %)**Reason**|=(% style="width: 423px;" %)**Troubleshooting methods**|=(% style="width: 353px;" %)**Handling**

710

|(% style="width:300px" %)The UVW phase sequence of motor power cable is incorrect|(% style="width:423px" %)Check whether the phase sequence of the motor power cable on the servo driver side and motor side corresponds to each other.|(% style="width:353px" %)Connect correctly according to UVW on the drive side and UVW on the motor side

711

|(% rowspan="2" style="width:300px" %)P01-10 parameter Settings are incorrect|(% style="width:423px" %)Check that the parameter value of P01-10 (maximum speed threshold) is less than the maximum speed required for the actual operation of the motor|(% rowspan="2" style="width:353px" %)Reset P01-10 (maximum speed threshold) according to mechanical requirements

712

|(% style="width:423px" %)(((

713

Check whether the motor speed corresponding to the input instruction exceeds P01-10 (maximum speed threshold).

714

715

Position mode, when the instruction is from a pulse instruction (P01-06 = 0).

716

717

Motor speed (rpm) = input pulse frequency (Hz) * 60 * electronic gear ratio / encoder resolution

718

)))

719

|(% style="width:300px" %)Servo drive fault|(% style="width:423px" %)The servo drive is still faulty after power on again|(% style="width:353px" %)Servo drive may be damaged. Please replace the servo drive.

720

721

**Er.33 Power module is over temperature**

Fault

|=(% style="width: 468px;" %)**Servo drive panel display**|=(% style="width: 607px;" %)**Fault name**

726

|(% style="width:468px" %)(((

727

(% style="text-align:center" %)

728

[[image:image-20220709165654-21.png]]

729

)))|(% style="width:607px" %)Power module is over temperature

Troubleshooting

|=(% style="width: 290px;" %)**Reason**|=(% style="width: 432px;" %)**Troubleshooting methods**|=(% style="width: 354px;" %)**Handling**

734

|(% style="width:290px" %)Ambient temperature is too high|(% style="width:432px" %)Measure the ambient temperature|(% style="width:354px" %)Reduce the ambient temperature of the servo drive

735

|(% style="width:290px" %)The cooling fan is faulty|(% style="width:432px" %)Check the servo drive fan for blockage or damage|(% style="width:354px" %)Contact technician for fan repair or replacement

736

|(% style="width:290px" %)The servo drive is mounted in an unreasonable orientation or the spacing between the servo drives is unreasonable|(% style="width:432px" %)Check whether the servo drive installation is reasonable|(% style="width:354px" %)Contact technical to obtain the installation standard of the servo drive

737

|(% style="width:290px" %)Servo drive fault|(% style="width:432px" %)Restarting after 10 minutes of power failure is still reported|(% style="width:354px" %)Servo drive may be damaged. Please replace the servo drive.

738

739

**Er.34 Motor overload protection**

Fault

|=(% style="width: 460px;" %)**Servo drive panel display**|=(% style="width: 615px;" %)**Fault name**

744

|(% style="width:460px" %)(((

745

(% style="text-align:center" %)

746

[[image:image-20220709170406-1.png]]

747

)))|(% style="width:615px" %)Motor overload protection

Troubleshooting

|=(% style="width: 239px;" %)**Reason**|=(% style="width: 435px;" %)**Troubleshooting methods**|=(% style="width: 402px;" %)**Handling**

752

|(% style="width:239px" %)Motor power cable, encoder cable wiring error|(% style="width:435px" %)Check whether the motor power cable and encoder cable wiring are correct.|(% style="width:402px" %)(((

753

Connect them according to the correct connection method.

754

755

Priority is given to the use of motor power lines and encoder cables as standard by manufacturers

756

)))

757

|(% style="width:239px" %)The load is too large|(% style="width:435px" %)Check overload characteristics of motor or servo drive|(% style="width:402px" %)(((

758

Reduce the load.

759

760

Contact technical to obtain the appropriate capacity drive and motor model.

761

)))

762

|(% style="width:239px" %)Frequent acceleration and deceleration|(% style="width:435px" %)Check whether the acceleration and deceleration motion is frequent or the acceleration and deceleration time is too small|(% style="width:402px" %)Appropriately extend the acceleration and deceleration time

763

|(% style="width:239px" %)Motor model and servo driver do not match|(% style="width:435px" %)Check the monitoring quantity U0-53 (motor model code).|(% style="width:402px" %)Contact technician to obtain the matching motor model.

764

|(% rowspan="3" style="width:239px" %)Unreasonable parameters|(% style="width:435px" %)Use Wecon SCTools to obtain the actual torque waveform and observe whether overshoot is obvious|(% style="width:402px" %)Set the appropriate loop gain parameters

765

|(% style="width:435px" %)Observe whether the motor vibrates during operation|(% style="width:402px" %)Set the appropriate rigidity level

766

|(% style="width:435px" %)Check whether p10-04 (Motor overload protection time coefficient) is reasonable|(% style="width:402px" %)Increase P10-04 (motor overload protection time factor) in the case of ensuring that the motor will not burn out.

767

|(% style="width:239px" %)Motor blockage|(% style="width:435px" %)Check if the motor is blocked due to mechanical jamming of the load.|(% style="width:402px" %)Release the mechanical jam.

768

|(% style="width:239px" %)The brakes are not open|(% style="width:435px" %)Check whether the brake device is opened normally, and check whether the output voltage of the brake is 24V|(% style="width:402px" %)Check the logic of brake power supply or brake output signal

769

|(% style="width:239px" %)Servo drive fault|(% style="width:435px" %)The servo drive is still faulty after power on again|(% style="width:402px" %)Servo drive may be damaged, please contact technician for repair.

770

771

**Er.35 Electronic gear ratio exceeds limit**

Fault

|=(% style="width: 473px;" %)**Servo drive panel display**|=(% style="width: 602px;" %)**Fault name**

776

|(% style="width:473px" %)(((

777

(% style="text-align:center" %)

778

[[image:image-20220709170424-2.png]]

779

)))|(% style="width:602px" %)Electronic gear ratio exceeds limit

Troubleshooting

|=(% style="width: 299px;" %)**Reason**|=(% style="width: 457px;" %)**Troubleshooting methods**|=(% style="width: 320px;" %)**Handling**

784

|(% style="width:299px" %)The electronic gear ratio setting is greater than the settable range|(% style="width:457px" %)(((

785

Check that the ratio of function codes P00-17/P00-18, P00-19/P00-20 is in the following range.

786

787

17bit absolute encoder upper limit value: 500.

788

789

23bit absolute encoder upper limit value: 32000

790

)))|(% rowspan="2" style="width:320px" %)After modifying the corresponding function code according to the range, set P10-03 (fault clearance) to 1.

791

|(% style="width:299px" %)The electronic gear ratio setting is less than the settable range|(% style="width:457px" %)(((

792

Check that the ratio of function codes P00-17/P00-18, P00-19/P00-20 is in the following range.

793

794

17bit absolute encoder lower limit value: 0.001.

795

)))

796

797

**Er.36 Position deviation is too large**

Fault

|=(% style="width: 463px;" %)**Servo drive panel display**|=(% style="width: 612px;" %)**Fault name**

802

|(% style="width:463px" %)(((

803

(% style="text-align:center" %)

804

[[image:image-20220709170438-3.png]]

805

)))|(% style="width:612px" %)Position deviation is too large

Troubleshooting

|=(% style="width: 233px;" %)**Reason**|=(% style="width: 449px;" %)**Troubleshooting methods**|=(% style="width: 394px;" %)**Handling**

810

|(% rowspan="2" style="width:233px" %)Cable error|(% style="width:449px" %)Check whether the phase sequence of the motor power cable on the servo driver side and motor side corresponds to each other.|(% style="width:394px" %)Connect correctly according to UVW on the drive side and UVW on the motor side

811

|(% style="width:449px" %)Check whether both ends of the power cable are disconnected|(% style="width:394px" %)Replace the power cable and power on again

812

|(% rowspan="4" style="width:233px" %)Unreasonable parameter settings|(% style="width:449px" %)Check whether P03-02 (Load rigidity Level) is set properly|(% style="width:394px" %)Reduce the P03-02 (load stiffness level) setting value appropriately

813

|(% style="width:449px" %)Check whether the gain parameters are set properly, resulting in overshoot|(% style="width:394px" %)Adjust gain parameters reasonably

814

|(% style="width:449px" %)Check whether P00-25 (position deviation threshold) is set properly|(% style="width:394px" %)Increase the value of P00-25 (position deviation threshold)

815

|(% style="width:449px" %)Use Wecon SCTools to obtain the equivalent speed of the position instruction and check whether the speed is greater than the motor speed limit|(% style="width:394px" %)Increase the setting values of P01-12 (forward speed threshold) and P01-13 (reverse speed threshold) according to mechanical requirements

816

|(% style="width:233px" %)Motor blockage|(% style="width:449px" %)Check if the motor is blocked due to mechanical jamming of the load.|(% style="width:394px" %)Release the mechanical jam.

817

|(% style="width:233px" %)The brakes are not open|(% style="width:449px" %)Check whether the brake device is opened normally, and check whether the output voltage of the brake is 24V|(% style="width:394px" %)Check the logic of brake power supply or brake output signal

818

|(% style="width:233px" %)The input pulse frequency is too high|(% style="width:449px" %)Position mode: when the instruction comes from the pulse instruction (P01-06=0), check whether the input pulse frequency is too high|(% style="width:394px" %)Reduce the input pulse frequency

819

|(% style="width:233px" %)The equivalent velocity of position instruction changes too fast|(% style="width:449px" %)Check if the position instruction changes too fast in the equivalent speed|(% style="width:394px" %)Properly increase the acceleration and deceleration time and reduce the rate of change of the speed

820

821

**Er.37 Torque saturation abnormal**

Fault

|=(% style="width: 467px;" %)**Servo drive panel display**|=(% style="width: 608px;" %)**Fault name**

826

|(% style="width:467px" %)(((

827

(% style="text-align:center" %)

828

[[image:image-20220709170455-4.png]]

829

)))|(% style="width:608px" %)Torque saturation abnormal

Troubleshooting

|=(% style="width: 227px;" %)**Reason**|=(% style="width: 460px;" %)**Troubleshooting methods**|=**Handling**

834

|(% style="width:227px" %)Motor power line cable UVW phase sequence error|(% style="width:460px" %)Check whether the phase sequence of the motor power cable on the servo driver side and motor side corresponds to each other.|Connect correctly according to UVW on the drive side and UVW on the motor side

835

|(% rowspan="4" style="width:227px" %)Unreasonable parameter settings|(% style="width:460px" %)Check whether P01-19 Torque saturation timeout) is set properly|Increase P01-19 Torque saturation timeout) setting value appropriately

836

|(% style="width:460px" %)Check whether P01-15 (forward torque limit) and P01-16 (reverse torque limit) are set reasonable|Increase the setting values of P01-15 (forward torque limit) and P01-16 (reverse torque limit) appropriately

837

|(% style="width:460px" %)Check whether the gain parameters are set properly|Adjust gain parameters reasonably

838

|(% style="width:460px" %)Check whether the gain parameters are set properly|Increase the acceleration and deceleration time

839

|(% style="width:227px" %)The load is too heavy|(% style="width:460px" %)Check whether the load is too heavy|Reduce the load

840

|(% style="width:227px" %)Motor blockage|(% style="width:460px" %)Check whether the motor is blocked due to mechanical jamming of the load.|Release the mechanical jam.

841

|(% style="width:227px" %)The brakes are not open|(% style="width:460px" %)Check whether the brake device is opened normally, and check whether the output voltage of the brake is 24V|Check the logic of brake power supply or brake output signal

842

|(% style="width:227px" %)Limit switches are mounted outside the travel|(% style="width:460px" %)Check whether the limit switch is installed outside the travel|Adjust the installation position of limit switch

843

844

**Er.38 Main circuit electricity is lack of phase**

Fault

|=**Servo drive panel display**|=**Fault name**

849

|(((

850

(% style="text-align:center" %)

851

[[image:image-20220709170508-5.png]]

852

)))|Main circuit electricity is lack of phase

Troubleshooting

|=(% style="width: 270px;" %)**Reason**|=(% style="width: 424px;" %)**Troubleshooting methods**|=**Handling**

857

|(% rowspan="2" style="width:270px" %)Cable error|(% style="width:424px" %)Check whether the motor power line connection port is connected reliably|Tighten the fixing screws of the motor power line connection ports

858

|(% style="width:424px" %)Check the power cable for disconnections at both ends|Replace the power cable and power on again.

859

|(% style="width:270px" %)Three-phase specification drives run on single-phase power supplies|(% style="width:424px" %)Check whether the three-phase drive has a single-phase power supply|Connect a three-phase power supply according to the power supply specifications

860

|(% style="width:270px" %)The power supply is unstable or off|(% style="width:424px" %)(((

861

Check that the drive input power specifications meet the specifications:

862

863

220V drive valid value: 198V to 242V.

864

865

380V drive valid value: 342V to 418V

866

)))|Use after the power supply is stable.

867

|(% style="width:270px" %)Servo drive fault|(% style="width:424px" %)The servo drive is still faulty after power on again|Servo drive may be damaged, please contact technician for repair.

868

869

**Er.39 Emergency stop**

Fault

|=(% style="width: 466px;" %)**Servo drive panel display**|=(% style="width: 609px;" %)**Fault name**

874

|(% style="width:466px" %)(((

875

(% style="text-align:center" %)

876

[[image:image-20220709170521-6.png]]

877

)))|(% style="width:609px" %)Emergency stop

Troubleshooting

|=(% style="width: 244px;" %)**Reason**|=(% style="width: 545px;" %)**Troubleshooting methods**|=(% style="width: 287px;" %)**Handling**

882

|(% rowspan="2" style="width:244px" %)Servo drive receives emergency stop instructions|(% style="width:545px" %)Check whether emergency stop protection is triggered manually|(% style="width:287px" %)Power on the servo drive again

883

|(% style="width:545px" %)(((

884

Check whether the servo drive has mistakenly triggered the emergency stop signal.

885

886

Check whether function 08 (E-STOP) is configured in the P06 group "DIDO configuration" function code group "DI port function selection" and whether the DI port wiring is normal.

887

)))|(% style="width:287px" %)(((

888

Properly wire the DI port

)))

**Er.40 Encoder battery failure**

Fault

|=(% style="width: 469px;" %)**Servo drive panel display**|=(% style="width: 606px;" %)**Fault name**

898

|(% style="width:469px" %)(((

899

(% style="text-align:center" %)

900

[[image:image-20220709170534-7.png]]

901

)))|(% style="width:606px" %)Encoder battery failure

Troubleshooting

|=(% style="width: 361px;" %)**Reason**|=(% style="width: 395px;" %)**Troubleshooting methods**|=(% style="width: 320px;" %)**Handling**

906

|(% style="width:361px" %)Multi-turn absolute encoder is not connected to the battery during the power off of the servo drive|(% style="width:395px" %)Check if the encoder is connected to the battery during the power off of the servo|(% style="width:320px" %)Set P10-03 (Fault clearing) to 1

907

|(% style="width:361px" %)The voltage of multi-turn absolute encoder battery is low|(% style="width:395px" %)Measure battery voltage|(% style="width:320px" %)Contact technicians to replace with a new encoder battery

908

909

**Er.41 Motor (encoder) over temperature**

Fault

|=(% style="width: 465px;" %)**Servo drive panel display**|=(% style="width: 610px;" %)**Fault name**

914

|(% style="width:465px" %)(((

915

(% style="text-align:center" %)

916

[[image:image-20220709170547-8.png]]

917

)))|(% style="width:610px" %)Motor (encoder) over temperature

Troubleshooting

|=(% style="width: 273px;" %)**Reason**|=(% style="width: 462px;" %)**Troubleshooting methods**|=**Handling**

922

|(% style="width:273px" %)The motor is overloaded|(% style="width:462px" %)Check whether the motor is overloaded|Reduce the load of the motor

923

924

**Er.42 Encoder write fault fault**

Fault

|=(% style="width: 471px;" %)**Servo drive panel display**|=(% style="width: 604px;" %)**Fault name**

929

|(% style="width:471px" %)(((

930

(% style="text-align:center" %)

931

[[image:image-20220709170937-1.png]]

932

)))|(% style="width:604px" %)Encoder write faults

Troubleshooting

|=**Reason**|=(% style="width: 426px;" %)**Troubleshooting methods**|=(% style="width: 404px;" %)**Handling**

937

|(% rowspan="2" %)Poor contact of CN1 port|(% style="width:426px" %)Check whether the cable port (CN1) of the encoder is properly connected|(% style="width:404px" %)Tighten the fixing screws on the CN1 port

938

|(% style="width:426px" %)Check whether the servo drive CN1 port jack is deformed|(% style="width:404px" %)If the cable is deformed, replace the cable or its port

939

|Poor contact on adapter port (Rectangular connection cable)|(% style="width:426px" %)Check whether both ends of the rectangular connector are reliably connected|(% style="width:404px" %)Make sure that both ends of the rectangular connector are connected reliably; Replace it with an encoder cable with higher connection reliability.

940

|(% rowspan="2" %)External interference|(% style="width:426px" %)Check for strong magnetic fields nearby|(% style="width:404px" %)Eliminate nearby strong magnetic interference

941

|(% style="width:426px" %)Check whether there are sources of interference such as power supply inverter equipment nearby|(% style="width:404px" %)Separate strong and weak power as much as possible, with good ground contact between motor and servo drive, and keep away from power cable wiring.

942

|Servo drive fault|(% style="width:426px" %)The servo drive is still faulty after power on again|(% style="width:404px" %)Servo drive may be damaged, please contact technician for repair.

943

944

**Er.43 Drive overload fault**

Fault

|=(% style="width: 794px;" %)**Servo drive panel display**|=(% style="width: 627px;" %)**Fault name**

950

|(% style="width:794px" %) (((

951

(% style="text-align:center" %)

952

[[image:企业微信截图_16877625944107.png]]

953

)))|(% style="width:627px" %)Drive overload fault

Troubleshooting

|=Reason|=Troubleshooting|=Handling

958

|The average output power (U0-34) exceeds the limit power (overload 110%) for more than 20 minutes.|Whether the average output power (U0-34) often exceeds the limit (overload 110) Check whether the drive meets the requirements.|Observed whether the U0-34 is often greater than the servo limit power (overload 110%) during servo operation. When ER.43 alarm is found in the process of machine adjustment, please check whether the servo power is suitable. It is recommended to replace the driver model with higher power.

959

|Servo drive fault|The servo drive is still faulty after power on again|Servo drive may be damaged, contact the manufacturer's technician for repair.

960

961

**Er.45 Drive Blocking Overtemperature Protection**

Fault

|=(% style="width: 771px;" %)Servo drive panel display|=(% style="width: 650px;" %)Fault name

966

|(% style="width:771px" %)(((

967

(% style="text-align:center" %)

968

[[image:1719997732882-739.png||height="80" width="203"]]

969

)))|(% style="width:650px" %)Driver Blocking Overtemperature Protection

Troubleshooting

|=Reason|=Troubleshooting|=Treatment

974

|Check whether U0-39 load torque percentage exceeds the maximum torque of the motor for 3 seconds or observe whether the load torque at the waveform interface of the oscilloscope of the upper computer is greater than the maximum torque of the motor and the motor is blocked.|Check whether U0-39 load torque percentage exceeds the maximum torque of the motor, and observe whether the motor is stuck.|Observable maximum torque observe whether the load torque on the waveform interface of the host computer oscilloscope is greater than the motor maximum torque or check whether U0-39 load torque percentage exceeds the motor maximum torque for 3 seconds.

975

976

(% style="text-align:center" %)

977

[[image:1687762670698-912.png]]

978

979

**Er.60 ADC conversion is not complete**

Fault

|=**Servo drive panel display**|=**Fault name**

984

|(((

985

(% style="text-align:center" %)

986

[[image:image-20220709170943-2.png]]

987

)))|ADC conversion is not complete

Troubleshooting

|=(% style="width: 210px;" %)**Reason**|=(% style="width: 479px;" %)**Troubleshooting methods**|=(% style="width: 387px;" %)**Handling**

992

|(% rowspan="2" style="width:210px" %)External interference|(% style="width:479px" %)Check for strong magnetic fields nearby|(% style="width:387px" %)Eliminate nearby strong magnetic interference

993

|(% style="width:479px" %)Check whether there are sources of interference such as power supply inverter equipment nearby|(% style="width:387px" %)Separate strong and weak power as much as possible, with good ground contact between motor and servo drive, and keep away from power cable wiring.

994

|(% style="width:210px" %)Servo drive fault|(% style="width:479px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:387px" %)If there is still alarm after multiple power-on, contact the technician.

995

996

**Er.61 Internal software fault**

Fault

|=(% style="width: 470px;" %)**Servo drive panel display**|=(% style="width: 605px;" %)**Fault name**

1001

|(% style="width:470px" %)(((

1002

(% style="text-align:center" %)

1003

[[image:image-20220709170950-3.png]]

1004

)))|(% style="width:605px" %)Internal software fault

Troubleshooting

|=(% style="width: 235px;" %)**Reason**|=(% style="width: 478px;" %)**Troubleshooting methods**|=(% style="width: 363px;" %)**Handling**

1009

|(% style="width:235px" %)Servo drive fault|(% style="width:478px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:363px" %)If there is still alarm after multiple power-on, contact the technician.

1010

1011

**Er.62 Internal software fault**

Fault

|=(% style="width: 479px;" %)**Servo drive panel display**|=(% style="width: 596px;" %)**Fault name**

1016

|(% style="width:479px" %)(((

1017

(% style="text-align:center" %)

1018

[[image:image-20220709171001-4.png]]

1019

)))|(% style="width:596px" %)Internal software fault

Troubleshooting

|=(% style="width: 218px;" %)**Reason**|=(% style="width: 501px;" %)**Troubleshooting methods**|=(% style="width: 357px;" %)**Handling**

1024

|(% style="width:218px" %)Servo drive fault|(% style="width:501px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:357px" %)If there is still alarm after multiple power-on, contact the technician.

1025

1026

**Er.63 Internal software fault**

Fault

|=(% style="width: 468px;" %)**Servo drive panel display**|=(% style="width: 607px;" %)**Fault name**

1031

|(% style="width:468px" %)(((

1032

(% style="text-align:center" %)

1033

[[image:image-20220709171011-5.png]]

1034

)))|(% style="width:607px" %)Internal software fault

Troubleshooting

|=(% style="width: 238px;" %)**Reason**|=(% style="width: 471px;" %)**Troubleshooting methods**|=(% style="width: 367px;" %)**Handling**

1039

|(% style="width:238px" %)Servo drive fault|(% style="width:471px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:367px" %)If there is still alarm after multiple power-on, contact the technician.

1040

1041

**Er.64 Internal software fault**

Fault

|=(% style="width: 472px;" %)**Servo drive panel display**|=(% style="width: 603px;" %)**Fault name**

1046

|(% style="width:472px" %)(((

1047

(% style="text-align:center" %)

1048

[[image:image-20220709171022-6.png]]

1049

)))|(% style="width:603px" %)Internal software fault

Troubleshooting

|=(% style="width: 227px;" %)**Reason**|=(% style="width: 498px;" %)**Troubleshooting methods**|=(% style="width: 351px;" %)**Handling**

1054

|(% style="width:227px" %)Servo drive fault|(% style="width:498px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:351px" %)If there is still alarm after multiple power-on, contact the technician.

1055

1056

**Er.65 Internal software fault**

Fault

|=(% style="width: 472px;" %)**Servo drive panel display**|=(% style="width: 603px;" %)**Fault name**

1061

|(% style="width:472px" %)(((

1062

(% style="text-align:center" %)

1063

[[image:image-20220709171027-7.png]]

1064

)))|(% style="width:603px" %)Internal software fault

Troubleshooting

|=(% style="width: 212px;" %)**Reason**|=(% style="width: 518px;" %)**Troubleshooting methods**|=(% style="width: 346px;" %)**Handling**

1069

|(% style="width:212px" %)Servo drive fault|(% style="width:518px" %)Factory reset the parameter (P10-02=1) and power on again. If the servo drive still alarms after multiple operations, it is faulty.|(% style="width:346px" %)If there is still alarm after multiple power-on, contact the technician.

1070

1071

**A-80 Drive overpower warning**

Fault

|=Servo drive panel display|=Alarm name

1076

|(((

1077

(% style="text-align:center" %)

1078

[[image:1687763210466-195.png||height="54" width="150"]]

1079

)))|Drive overpower warning

Troubleshooting

|Reason|Troubleshooting|Handling

1084

|(((

1085

The average output power (U0-34) exceeds the limit power of the drive (overload 110%) for more than 5 seconds, the drive will have alarm.

1086

1087

1088

)))|Check whether the average output power (U0-34) exceeds the limit (overload 110) The average output power (U0-34) exceeds the limit power (overload 110%) for more than 5 minutes. Check whether the U0-34 exceeds 110% of the rated power of the driver.|Check whether the U0-34 exceeds 110% of the rated power of the driver. When A80 alarm is found in the process of machine adjustment, please check whether the servo power is suitable.

1089

1090

(% style="text-align:center" %)

1091

[[image:1687763249516-252.png]]

1092

1093

**A-81 Overspeed alarm**

Fault

|=(% style="width: 498px;" %)**Servo drive panel display**|=(% style="width: 577px;" %)**Fault name**

1098

|(% style="width:498px" %)(((

1099

(% style="text-align:center" %)

1100

[[image:image-20220709171047-8.png]]

1101

)))|(% style="width:577px" %)Overspeed alarm

Troubleshooting

|=(% style="width: 225px;" %)**Reason**|=(% style="width: 474px;" %)**Troubleshooting methods**|=(% style="width: 377px;" %)**Handling**

1106

|(% style="width:225px" %)Motor power line cable UVW phase sequence error|(% style="width:474px" %)Check whether the phase sequence of the motor power cable on the servo driver side and motor side corresponds to each other.|(% style="width:377px" %)Connect correctly according to UVW on the drive side and UVW on the motor side

1107

|(% style="width:225px" %)P01-11 parameter setting is not proper|(% style="width:474px" %)Check whether the value of P01-11 (warning speed threshold) is less than the max speed required for the operation of motor|(% style="width:377px" %)Reset P01-11 (warning speed threshold) according to mechanical requirements

1108

|(% style="width:225px" %)Input speed command is too high|(% style="width:474px" %)Check whether the motor speed corresponding to the input command exceeds P01-11 (maximum speed threshold)|(% style="width:377px" %)Reduce the input speed instruction according to the mechanical requirements; Reasonably increase P01-11 (warning speed threshold)

**A-82 Overload**

Fault

|=(% style="width: 479px;" %)**Servo drive panel display**|=(% style="width: 596px;" %)**Fault name**

1115

|(% style="width:479px" %)(((

1116

(% style="text-align:center" %)

1117

[[image:image-20220709171057-9.png]]

1118

)))|(% style="width:596px" %)Overload

Troubleshooting

|=(% style="width: 233px;" %)**Reason**|=(% style="width: 454px;" %)**Troubleshooting methods**|=**Handling**

1123

|(% style="width:233px" %)Motor power cable, encoder cable wiring error|(% style="width:454px" %)Check whether the motor power cable and encoder cable wiring are correct.|(((

1124

Connect them according to the correct connection method.

1125

1126

Priority is given to the use of motor power lines and encoder cables as standard by manufacturers

1127

)))

1128

|(% style="width:233px" %)The load is too large|(% style="width:454px" %)Check overload characteristics of motor or servo drive|Reduce the load. Contact technical to obtain the appropriate capacity drive and motor model.

1129

|(% style="width:233px" %)Motor model and servo driver do not match|(% style="width:454px" %)Perform inertia identification and check the inertia ratio.|Contact technician to obtain the matching motor model.

1130

|(% style="width:233px" %)Motor model and servo driver do not match|(% style="width:454px" %)Check the monitoring quantity U0-53 (motor model code).|Contact technician to obtain the matching motor model.

1131

|(% rowspan="2" style="width:233px" %)Unreasonable parameters|(% style="width:454px" %)Use Wecon SCTools to obtain the actual torque waveform and observe whether overshoot is obvious|Set the appropriate loop gain parameters

1132

|(% style="width:454px" %)Observe whether the motor vibrates during operation|Set the appropriate rigidity level

1133

1134

**A-83 Braking resistor is over temperature or overloaded**

Fault

|=(% style="width: 461px;" %)**Servo drive panel display**|=(% style="width: 614px;" %)**Fault name**

1139

|(% style="width:461px" %)(((

1140

(% style="text-align:center" %)

1141

[[image:image-20220709171112-10.png]]

1142

)))|(% style="width:614px" %)Braking resistor is over temperature or overloaded

Troubleshooting

|=(% style="width: 228px;" %)**Reason**|=(% style="width: 455px;" %)**Troubleshooting methods**|=(% style="width: 393px;" %)**Handling**

1147

|(% style="width:228px" %)Improper connection of internal braking resistor|(% style="width:455px" %)Check whether C, D are connected to the short cap and the contact is normal|(% style="width:393px" %)When using an internal braking resistor, reliably connect the shorting cap or shorting wire between C and D

1148

|(% style="width:228px" %)Improper connection of external braking resistor|(% style="width:455px" %)Remove the external braking resistor and measure whether the resistance value is "∞” (infinity)|(% style="width:393px" %)Replace the new external braking resistor. After ensuring that the resistance value of the resistor is the same as the nominal value, connect it in series between P+ and C.

1149

|(% style="width:228px" %)The resistance value of the external braking resistor is too large|(% style="width:455px" %)Test the actual external braking resistor resistance and compare it with the recommended braking resistor to make sure the actual resistance is not too large.|(% style="width:393px" %)Use a suitable external braking resistor.

1150

|(% style="width:228px" %)Improper parameter setting|(% style="width:455px" %)(((

1151

When using an external braking resistor, check the following parameters.

1152

1153

Whether P00-09 (braking resistor setting) is reasonable.

1154

1155

P00-10 (external braking resistor resistance value) is reasonable.

1156

)))|(% style="width:393px" %)(((

1157

Reasonable setting of P00-09 (braking resistor setting):

1158

1159

P00-09=1 (use external braking resistor and natural cooling)

1160

1161

P00-09 = 3 (do not use the braking resistor, all by capacitor absorption)

1162

1163

P00-10 (external braking resistor resistance value) parameter value and the actual actual use of external braking resistor are consistent.

1164

)))

1165

1166

**A-84 Parameter modification that needs to be powered on again**

Fault

|=(% style="width: 454px;" %)**Servo drive panel display**|=(% style="width: 621px;" %)**Fault name**

1171

|(% style="width:454px" %)(((

1172

(% style="text-align:center" %)

1173

[[image:image-20220709171124-11.png]]

1174

)))|(% style="width:621px" %)Modified parameters that need to be powered on again to take effect

Troubleshooting

|=(% style="width: 316px;" %)**Reason**|=(% style="width: 541px;" %)**Troubleshooting methods**|=(% style="width: 219px;" %)**Handling**

1179

|(% style="width:316px" %)Modified the effective timing to "power on again" parameter.|(% style="width:541px" %)Check whether the servo drive has modified the parameter with the effective time "power on again".|(% style="width:219px" %)Power on again

1180

1181

**A-85 Receive position pulse when servo is OFF**

Fault

|=(% style="width: 465px;" %)**Servo drive panel display**|=(% style="width: 610px;" %)**Fault name**

1186

|(% style="width:465px" %)(((

1187

(% style="text-align:center" %)

1188

[[image:image-20220709171137-12.png]]

1189

)))|(% style="width:610px" %)Receive position pulse when servo is OFF

Troubleshooting

|=(% style="width: 270px;" %)**Reason**|=(% style="width: 502px;" %)**Troubleshooting methods**|=(% style="width: 304px;" %)**Handling**

1194

|(% style="width:270px" %)Servo received position pulse when it is OFF.|(% style="width:502px" %)Check whether the servo drive is in the OFF state, and check whether the host computer is sending pulse instruction.|(% rowspan="2" style="width:304px" %)The host computer stops sending pulse instructions.

1195

|(% style="width:270px" %)Servo received pulse instruction in non-position mode|(% style="width:502px" %)(((

1196

Check whether the servo drive P00-01 (control mode) is in position mode;

1197

1198

Check whether the host computer is sending pulse instructions

1199

)))

1200

1201

**A-86 Input pulse frequency is too high**

Fault

|=(% style="width: 463px;" %)**Servo drive panel display**|=(% style="width: 612px;" %)**Fault name**

1206

|(% style="width:463px" %)(((

1207

(% style="text-align:center" %)

1208

[[image:image-20220709171149-13.png]]

1209

)))|(% style="width:612px" %)Input pulse frequency is too high

Troubleshooting

|=(% style="width: 240px;" %)**Reason**|=(% style="width: 446px;" %)**Troubleshooting methods**|=**Handling**

1214

|(% style="width:240px" %)The input pulse frequency is too high|(% style="width:446px" %)Position mode; When the instruction source is pulse instructions (P01-06=0), check whether the input pulse frequency is too high|Reduce the input pulse frequency

1215

|(% rowspan="2" style="width:240px" %)Improper parameter setting|(% style="width:446px" %)Check whether the parameter value of P01-16 (number of instruction pulses for one rotation of the motor) is greater than the actual demand value.|Reset P01-16 according to mechanical requirements (number of instruction pulses for one rotation of motor).

1216

|(% style="width:446px" %)Check whether the parameter value of P01-17 to P01-20 (electronic gear ratio) is greater than the actual demand value.|Reset parameter of values P01-17 to P01-20 (electronic gear ratio) according to mechanical requirements

1217

1218

**A-88 Main circuit momentary power off**

Fault

|=**Servo drive panel display**|=**Fault name**

1223

|(((

1224

(% style="text-align:center" %)

1225

[[image:image-20220709171200-14.png]]

1226

)))|Main circuit momentary power off

Troubleshooting

|=(% style="width: 223px;" %)**Reason**|=(% style="width: 462px;" %)**Troubleshooting methods**|=(% style="width: 391px;" %)**Handling**

1231

|(% style="width:223px" %)Power off|(% style="width:462px" %)(((

1232

Check that the drive input power specifications meet the specifications:

1233

1234

220V drive valid value: 198V to 242V.

1235

1236

380V drive valid value: 342V to 418V

1237

)))|(% style="width:391px" %)Use it after the power supply is stable

1238

|(% style="width:223px" %)Servo drive fault|(% style="width:462px" %)The servo drive is still faulty after power on again|(% style="width:391px" %)Servo drive may be damaged, please contact technician for repair.

1239

1240

**A-89 DI port configuration is duplicate**

Fault

|=(% style="width: 482px;" %)**Servo drive panel display**|=(% style="width: 593px;" %)**Fault name**

1245

|(% style="width:482px" %)(((

1246

(% style="text-align:center" %)

1247

[[image:image-20220709171217-15.png]]

1248

)))|(% style="width:593px" %)DI port configuration is duplicate

Troubleshooting

|=**Reason**|=(% style="width: 464px;" %)**Troubleshooting methods**|=(% style="width: 375px;" %)**Handling**

1253

|The same non-zero DI function is assigned to multiple DI ports|(% style="width:464px" %)Check whether the "DI port function selection" of the "DIDO Configuration" function code group of the P06 group is configured with the same DI function|(% style="width:375px" %)(((

1254

Configuring each DI port for different DI functions and power on again.

1255

1256

Configure the function of the unwanted DI ports to 0 (off) and power on again.

1257

1258

Factory reset the parameter P10-02=1, and power on again.

1259

)))

1260

1261

**A-90 DI port configuration is duplicate**

Fault

|=**Servo drive panel display**|=**Fault name**

1266

|(((

1267

(% style="text-align:center" %)

1268

[[image:image-20220709171230-16.png]]

1269

)))|DO port configuration i duplicate

Troubleshooting

|=**Reason**|=(% style="width: 469px;" %)**Troubleshooting methods**|=(% style="width: 367px;" %)**Handling**

1274

|The same non-zero DO function is assigned to multiple DO ports|(% style="width:469px" %)Check whether the "DO port function selection" of the "DIDO Configuration" function code group of the P06 group is configured with the same DO function|(% style="width:367px" %)(((

1275

Configuring each DO port for different DO functions and power on again.

1276

1277

Configure the function of the unwanted DO ports to 0 (off) and power on again.

1278

1279

Factory reset the parameter P10-02=1, and power on again.

1280

)))

1281

1282

**A-91 Parameter modification is too frequent**

Fault

|=(% style="width: 465px;" %)**Servo drive panel display**|=(% style="width: 610px;" %)**Fault name**

1287

|(% style="width:465px" %)(((

1288

(% style="text-align:center" %)

1289

[[image:image-20220709171241-17.png]]

1290

)))|(% style="width:610px" %)(((

1291

Parameter modification is too frequent (modification frequency allowed of function code: 6 hours/150 times

1292

1293

Note: 32-bit function code: recorded as 2 times)

)))

Troubleshooting

|Reason|Troubleshooting|Handling

1299

|EEPROM writing frequency is too high|(((

1300

Check whether the host computer frequently modifies the parameters (modification frequency allowed of function code: 6 hours/150 times

1301

1302

Note: 32-bit function code: recorded as 2 times)

)))|(((

(1) During machine adjustment, A91 warning (6 hours/150 times) caused by manual frequent modification of function codes can be cleared through P10-03. In other cases, please check the PLC program

1307

1308

(2) If A91 warning appears in the normal working mode of the machine, please check whether the PLC program frequently modifies the function code.

1309

1310

(3) When the function code needs to be modified frequently, it is recommended to close Modbus write to EEPROM (P12-4 is set to 0)

1311

)))

1312

|(% rowspan="3" %)external interference|Check for strong magnetic fields nearby|Eliminate nearby strong magnetic interference

1313

|Check whether there are sources of interference such as power supply inverter equipment nearby|Separate strong and weak power as much as possible, with good ground contact between motor and servo drive, and keep away from power cable wiring.

1314

|(((

1315

Increase the abnormal threshold setting of P0-31 encoder read-write check.

1316

1317

1318

)))|Eliminate the A93 warning by increasing the exception threshold is suitable as a temporary solution. The disadvantage is that the motor may run in an unstable state.

1319

|Encoder fault|Manually rotate the motor shaft counterclockwise or clockwise to observe whether the monitoring quantity U0-30 (electrical angle) changes regularly|If the value of U0-30 (electrical angle) changes abruptly or does not change, the encoder itself may have problems, please replace the motor or encoder.

1320

|Servo drive fault|●Cross-verification. Use the normal motor, encoder cable to connect to the servo drive. If the servo drive still have alarm, it is servo fault.|Servo driver may be damaged, please contact the manufacturer's technician.

1321

1322

**A-92 Low encoder battery voltage warning**

Fault

|=**Servo drive panel display**|=**Fault name**

1327

|(((

1328

(% style="text-align:center" %)

1329

[[image:image-20220709171253-18.png]]

1330

)))|Low encoder battery voltage warning

Troubleshooting

|=(% style="width: 335px;" %)**Reason**|=(% style="width: 347px;" %)**Troubleshooting methods**|=(% style="width: 394px;" %)**Handling**

1335

|(% style="width:335px" %)The encoder battery voltage is less than 3.1V|(% style="width:347px" %)Measure the encoder battery voltage|(% style="width:394px" %)Contact technician to replace a new encoder battery

1336

1337

**A-93 Abnormal and frequency of encoder read and write check is too high**

Fault

|=(% style="width: 611px;" %)**Servo drive panel display**|=(% style="width: 811px;" %)**Fault name**

1342

|(% style="width:611px" %)(((

1343

(% style="text-align:center" %)

1344

[[image:image-20220709171304-19.png]]

1345

)))|(% style="width:811px" %)The abnormal frequency of encoder read-write verification is too high

Troubleshooting

|=(% style="width: 235px;" %)**Reason**|=(% style="width: 446px;" %)**Troubleshooting methods**|=(% style="width: 395px;" %)**Handling**

1350

|(% colspan="1" rowspan="3" style="width:235px" %)External interference|(% style="width:446px" %)Check for strong magnetic fields nearby|(% style="width:395px" %)Eliminate nearby strong magnetic interference

1351

|(% style="width:446px" %)Check whether there are sources of interference such as power supply inverter equipment nearby|(% style="width:395px" %)Separate strong and weak power as much as possible, with good ground contact between motor and servo drive, and keep away from power cable wiring.

1352

|(% style="width:446px" %)Increase the abnormal threshold setting of P0-31.|(% style="width:395px" %)This method is suitable as a temporary workaround to eliminate the A93 warning. It may cause an unstable state in the operation of the motor.

1353

|(% style="width:235px" %)Encoder issue|(% style="width:446px" %)Manually rotate the motor shaft slowly, and observe the changes of the monitoring quantity U0-30 (electrical angle).|(% style="width:395px" %)If the value of U0-30 (electrical angle) changes suddenly or does not change, it may be a problem with the encoder, please replace the motor or encoder.

1354

|(% style="width:235px" %)Internal servo drive fault|(% style="width:446px" %)Cross-verification. Use the normal motor, encoder cable to connect to the servo drive, only connect the encoder cable. If the servo drive still alarm, it is failure.|(% style="width:395px" %)Contact technician for repair

Wiki source code of 10 Malfunctions