7: Constant speed overvoltage
8: Control power failure
9: Undervoltage
10: Inverter overload
11: Motor Overload
12: Input phase loss
13: Output phase loss
14: Module overheating
15: External fault
16: Communication abnormal
17: Contactor abnormal
18: Current detection abnormal
19: Motor self-learning abnormal
20: Encoder/PG card abnormal
21: Parameter read and write abnormal
22: Inverter hardware abnormal
23: Motor short to ground
24: Reserved
25: Reserved
26: Running time arrival
27: Custom fault 1
28: Custom fault 2
29; Power-on time arrival
30: Load drop
31: PID feedback loss when running
40: Fast current limiting timeout
41: Switch motor when running
42: Too large speed deviation
43: Motor overspeed
45:Motor over-temperature
51:Initial position error
COF: communication failure