Chapter 8 Troubleshooting and Countermeasures
-87-
No
No
Yes
Motor tuning fault
If the motor parameters are set as
per the motor nameplate
Set the motor parameters correctly
If the parameter identification
process is delayed
Check the cable connecting
the inverter to the motor
Fig.8-16 Motor Tuning Fault˄ERR19˅
Data Overflow
If it is normal after replacing the
main control board
Main control board fault
Ask for technical support
Fig. 8-17 EEPROM saving abnormal (Err21)
Yes
Yes
No
Inverter hardware fault
If it is over voltage
Remove over
voltage fault
If it is over current
Remove over
current fault
Fig.8-18 Inverter Hardware Fault˄ERR22˅
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