通过Modbus查看地址FC90的值可以判断出当前故障

Code Value       Value       Description

NEr r 0 No error]

OC1 1 [Over-current during acceleration]

OC2 2 [Over-current during deceleration]

OC3 3 [Over-current during constant speed operation]

OCL 4 [Over-current in load at startup]

OCA 5 [Short circuit in arm]

EPH I 8 [Input phase failure]

EPHO 9 [Output phase failure]

OP1 A [Overvoltage during acceleration]

OP2 B [Overvoltage during deceleration]

OP3 C [Overvoltage during constant speed operation]

OL1 D [Over-LOAD in inverter]

OL2 E [Over-LOAD in motor]

OH 10 [Overheat trip]

E 11 [Emergency stop]

EEP1 12 [EEPROM fault 1] (writing operation)

EEP2 13 [EEPROM fault 2] (reading operation)

EEP3 14 [EEPROM fault 3] (other)

Err2 15 [RAM fault]

Err3 16 [ROM fault]

Err4 17 [CPU fault]

Err5 18 [Communication error trip]

Err7 1A [Current detector fault]

Err8 1B [Optional circuit board type error]

Err9 1C [Graphic keypad communication error]

UC 1D [Small-current trip]

UP1 1E [Trip due to undervoltage in main circuit]

Ot 20 [Over-torque trip]

EF2 22 [Ground fault trip] (hardware detection)

OC1P 25 [Overcurrent flowing in element during acceleration]

OC2P 26 [Overcurrent flowing in element during deceleration]

OC3P 27 [Overcurrent flowing in element during operation]

EtYP 29 [Inverter type error]

OH2 2E [External thermal input]

SOUt 2F [VIA cable break]

E-18 32 [Break in an analog signal cable]

E-19 33 [CPU fault]

E-20 34 [Excess torque boost]

E-21 35 [CPU fault]

Etn1 54 [Auto-tuning error]

Fd1 48 [Closed damper 1 fault]

Fd2 49 [Closed damper 2 fault]。