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Version 33.1 by Theodore Xu on 2024/01/16 17:12
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1 == **Modbus** ==
2
3 **Communication specifications**
4
5 |(% colspan="2" %)Item|Content
6 |(% colspan="2" %)Communication protocol|Modbus protocol
7 |(% colspan="2" %)Standard specifications|Modbus-RTU slave station communication protocol
8 |(% colspan="2" %)Maximum connections|247
9 |(% colspan="2" %)Topological structure|Bus type
10 |Slave station function|Number of messages that can be received and requested at the same time|1
11
12 **Hardware configuration**
13
14 |Terminal identification|Terminal name|Function description|Jumper/dialing position
15 |J5|485 communication terminal resistance setting jumper|Match terminal resistance|(((
16 (% style="text-align:center" %)
17 [[image:modbus 跳线帽.png]]
18 )))
19
20 Modbus communication port of this product is located on the control panel, as shown in the following figure:
21
22
23 (% style="text-align:center" %)
24 [[image:modbus 电路.png]]
25
26 **RS485 Connection Topology**
27
28 RS485 bus connection topology is shown in the following figure. 485 bus is recommended to use shielded twisted pair (STP), 485+, 485-: **Adopt twisted pair to connect**; Only 120 Ω terminal matching resistors are connected at both ends of the bus to prevent signal reflection; All node 485 signal grounds are connected together; Connect 128 nodes at most, and the distance between branches of each node should be less than 3m.
29
30 **Multi-node connection mode**
31
32 When the number of nodes is large, 485 bus must be daisy chain connection. If branch connection is needed, the branch length from bus to node had better be short. It is recommended that it should not exceed 3m. **Star connection should be forbidden**. The diagram of common bus structure is as follows:
33
34 Figure1 Daisy chain connection
35
36 (% style="text-align:center" %)
37 [[image:菊花链接.png||alt="Daisy chain connection"]]
38
39 Figure2 Branch connection
40
41 (% style="text-align:center" %)
42 [[image:分支链接.png]]
43
44 Figure3  Star connection **(Forbidden) **
45
46 (% style="text-align:center" %)
47 [[image:星型链接.png]]
48
49
50 **Transmission distance**
51
52 The maximum number of nodes and transmission distance supported by our standard RS485 circuit at different rates are shown in the following table.
53
54 The communication distance between the inverter and other devices should not exceed **200 meters**, if it exceeds two hundred meters it may cause unstable communication. If the communication distance **exceeds 200 meters**, the following measures need to be included:
55
56 * Communication cable：Adopt twisted pair to connect
57 * anti-interference magnetic ring
58
59 |Transmission distance (m)|Rate (kbps)|Number of nodes|Wire diameter
60 |100|115.2|128|AWG26
61 |1000|19.2|128|AWG26
62
63 == **PNP/NPN** ==
64
65 === **VM series** ===
66
67 (% class="box infomessage" %)
68 (((
69 **✎Note:VM series manufactured after April 2023 can support this feature！！**
70 )))
71
72 NPN/PNP switching has been added to the VM series machines, enabling fast switching between the two modes.
73
74
75 (% style="text-align:center" %)
76 [[image:原理图.png]]
77
78 The NPN/PNP mode can be switched manually at the illustration to realize the compatibility of external signals. Where the upper two pins are shorted for NPN, the lower two pins are shorted for PNP mode.
79
80 **Product model**
81
82 0.75~~2.2(KW)
83
84 (% style="text-align:center" %)
85 [[image:VM小功率.png]]
86
87 (% class="wikigeneratedid" id="H47E7.528KW29" %)
88 4~~7.5(KW)
89
90 (% style="text-align:center" %)
91 [[image:VM大功率.png]]
92
93 (% class="wikigeneratedid" id="HVMPNPmode" %)
94 **VM PNP mode**
95
96 (% style="text-align:center" %)
97 [[image:VM pnp 改.png||height="406" width="1099"]]
98
99 (% class="wikigeneratedid" id="HVMNPNmode" %)
100 **VM NPN mode**
101
102 (% class="box infomessage" %)
103 (((
104 **✎Note:VM NPN external DC does not suppot.**
105 )))
106
107 (% style="text-align:center" %)
108 [[image:VM PNP 内部改.png]]
109
110 === **VB series** ===
111
112 The control signals of VB series products are compatible with both NPN and PNP signal types.
113
114 (% class="wikigeneratedid" id="HScheme" %)
115 **Scheme**
116
117 |=**Function**|=**Address definition**|=**Data meaning**
118 |Adapted power|(((
119 220V：0.75-2.2kW
120
121 380V：0.75-7.5kW
122 )))|380V：11-400kW
123 |NPN signal|Default Compatible|Default Compatible
124 |PNP signal|Add expansion board|(((
125 Changing OP terminal
126 )))
127
128 Add an expansion card for PNP signal compatibility for small control board.
129
130 (% class="wikigeneratedid" id="HIntroduceofexpansionmodule" %)
131 **Introduce of expansion module**
132
133 (1)Name：PNP signal compatible expansion board
134
135 (2)Picture：
136
137 (% style="text-align:center" %)
138 [[image:PNP 模块.png]]
139
140 (3)Application Principle：**VB 0.75kW-7.5kW PNP mode**
141
142 (% style="text-align:center" %)
143 [[image:VB 小功率 PNP.png]]
144
145 **VB 0.75kW-7.5kW NPN mode**
146
147 (% class="box infomessage" %)
148 (((
149 **✎Note:VB 0.75kW-11kW NPN external DC does not suppot.**
150 )))
151
152 (% style="text-align:center" %)
153 [[image:VB 小功率NPN 改.png]]
154
155 **VB 11kW-400kW PNP mode**
156
157 (% style="text-align:center" %)
158 [[image:VB 大功率 PNP 改1.1.png||height="395" width="1113"]]
159
160 **VB 11kW-400kW NPN mode**
161
162 (% style="text-align:center" %)
163 [[image:VB 大功率 NPN 改.png||height="399" width="1082"]]
164
165 == **VB wiring instructions for common control methods** ==
166
167 （1）Two-wire type 1 mode controls forward and reverse rotation
168
169 |**Correlation parameter**|**Name**|**Set value**|**Function description**
170 |F5.16|(((
171 Terminal
172
173 command mode
174 )))|0|Two-wire type 1
175 |F5.00|(((
176 DI1 Terminal
177
178 Function Selected
179 )))|1|Forward running（ FWD）
180 |F5.01|(((
181 DI2 Terminal
182
183 Function Selected
184 )))|2|Reverses run（ REV）
185
186 **Two-wire mode 1**: This mode is the most commonly used two-wire mode. For example, the DI1 terminal is assigned the forward running function, and the DI2 terminal is assigned the reverse running function. Connect the forward running switch to DI1 terminal and the reverse running switch to DI2 terminal.
187
188 (% style="text-align:center" %)
189 [[image:Two-wire mode 2图片.png||height="310" width="407"]]
190
191 Refer to the following table for running commands corresponding to switching signals:
192
193 |**K1**|**K2**|**Run command**
194 |0|0|STOP
195 |1|1|STOP
196 |1|0|Forward running
197 |0|1|Reverses running
198
199 （2）Two-wire type 2 mode controls forward and reverse rotation
200
201 |**Correlation parameter**|**Name**|**Set value**|**Function description**
202 |F5.16|(((
203 Terminal
204
205 command mode
206 )))|1|Two-wire type 2
207 |F5.00|DI1 Terminal Function    Selected|1|Run command
208 |F5.01|DI2 Terminal Function    Selected|2|Forward and reverse direction
209
210 Two-wire mode 2:In this mode,the DI1 terminal assigns the command function, and the DI2 terminal assigns the forward and reverse direction function.
211
212
213 (% style="text-align:center" %)
214 [[image:Two-wire mode 2图片.png||height="326" width="428"]]
215
216 Refer to the following table for running commands corresponding to switching signals:
217
218 |**K1**|**K2**|**Run command**
219 |0|0|STOP
220 |0|1|STOP
221 |1|0|Forward running
222 |1|1|Reverses running
223
224 （3）Three-wire type 1 mode controls forward and reverse rotation
225
226 |**Correlation parameter**|**Name**|**Set value**|**Function description**
227 |F5.16|(((
228 Terminal
229
230 command mode
231 )))|2|Three-wire type 1
232 |F5.00|DI1 Terminal Function    Selected|1|Forward running（ FWD）
233 |F5.01|DI2 Terminal Function    Selected|2|Reverses run（ REV）
234 |F5.02|DI3 Terminal Function    Selected|3|Three-wire operation control
235
236 Three-wire control mode 1: In this mode,the DI3 terminal allocates the three-wire operation control function, the DI1 terminal allocates the forward operation function, and the DI2 terminal allocates the reverse operation function. This control mode requires the frequency converter to use an external button as the start-stop switch of the inverter. Connect the start-stop button to DI3 terminal, the forward running button to DI1 terminal, and the reverse running button to DI2 terminal.
237
238
239 (% style="text-align:center" %)
240 [[image:Three-wire control mode 1.png||height="328" width="431"]]
241
242 **Among them: **SB1 forward button; SB2 reverse button; SB3 Stop button;
243
244 （4）Three-wire type 2 mode controls forward and reverse rotation
245
246 |**Correlation parameter**|**Name**|**Set value**|**Function description**
247 |F5.16|(((
248 Terminal
249
250 command mode
251 )))|3|Three-wire type 2
252 |F5.00|DI1 Terminal Function    Selected|1|Run command
253 |F5.01|DI2 Terminal Function    Selected|2|Forward and reverse direction
254 |F5.02|DI3 Terminal Function    Selected|3|Three-wire operation control
255
256 Three-wire control mode 2: For example, the DI3 terminal allocates the three-wire running control function, the DI1 terminal allocates the command function, and the DI2 terminal allocates the forward/reverse running direction function. Connect the start-stop button to DI3 terminal, and enable the operation to connect to DI1 terminal; Connect the forward/reverse operation button to the DI2 terminal.
257
258 (% style="text-align:center" %)
259 [[image:Three-wire control mode 2.png||height="332" width="436"]]
260
261 **Among them: **SB1 Stop button;SB2 Reverse and reverse control; buttons SB3 Run button;
262
263 Refer to the following table for running commands corresponding to switching signals:
264
265 |SB2|Run command
266 |0|Forward running
267 |1|Reverses running