v
4-2-8. Group P7 Fault and protection .....................................................................................................................125
4-2-9. Group P8 Keyboard and display ...................................................................................................................131
4-2-10. Group P9 Communication protocol ............................................................................................................136
4-2-11. Group PA PID parameters of process control ............................................................................................137
4-2-12. Group PB Multi-speed and simple PLC ......................................................................................................142
4-2-13. Group PC Auxiliary function ...................................................................................................................... 144
4-2-14. Group PE User optional parameters .......................................................................................................... 154
4-2-15. Group PF Torque control(Firmware versions below 3720) .......................................................................155
4-2-16. Group PF Torque control(Firmware versions 3720 and above) ................................................................157
4-2-17. Group A0 Textile ......................................................................................................................................... 159
4-2-18. Group A1 Virtual IO ................................................................................................................................... 161
4-2-19. Group A2 Second motor parameters ...........................................................................................................163
4-2-20. Group A4 Password countdown lock (supported by 3720 and above versions) .........................................165
4-2-21. Group A9 Communication address mapping (supported by 3720 and above versions) .............................166
4-2-22. Group AD AIAO correction parameters ..................................................................................................... 167
4-2-23. Group U0 Monitor parameters ................................................................................................................... 169
4-2-24. Group U4 Communication monitoring parameters ....................................................................................176
5. EMC ............................................................................................................................................................................ 180
5-1. EMC COMPLIANT INSTALLATION GUIDELINES ...................................................................................................... 180
5-1-1. Noise suppression ..........................................................................................................................................180
5-1-2. Field wiring and grounding .......................................................................................................................... 181
6. MODEL AND DIMENSION .................................................................................................................................... 182
6-1. VH6 SERIES VFD ELECTRICAL SPECIFICATION ..................................................................................................... 182
6-2. VH6 SERIES VFD DIMENSION ............................................................................................................................... 182
6-3. ACCESSORIES SELECTION GUIDE ........................................................................................................................... 185
6-3-1. Accessories functions .................................................................................................................................... 185
6-3-2. Cable selection .............................................................................................................................................. 186
6-3-3. Selection guidance of circuit breaker, contactor and fuse ............................................................................188
6-3-4. Reactor selection guide .................................................................................................................................189
6-3-5. Brake resistor selection .................................................................................................................................190
7. FAULT AND SOLUTION ........................................................................................................................................ 193
7-1. FAULT ALARM AND SOLUTION ...............................................................................................................................193
7-2. FAULT RECORD QUERY .......................................................................................................................................... 196
7-3. FAULT RESET ......................................................................................................................................................... 196
7-4. VFD COMMON FAULT ANALYSIS OF FREQUENCY CONVERTER .............................................................................. 197
7-4-1. Motor not rotate ............................................................................................................................................ 197
7-4-2. Motor vibration ............................................................................................................................................. 198
7-4-3. Over voltage .................................................................................................................................................. 198
7-4-4. Motor overheat ..............................................................................................................................................199
7-4-5. Over current .................................................................................................................................................. 200
7-4-6. VFD overheat ................................................................................................................................................ 201
7-4-7. The motor stalls during acceleration and deceleration ................................................................................ 202
7-4-8. Under voltage ................................................................................................................................................202
8. MAINTENANCE ....................................................................................................................................................... 203
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