MH860 series hydraulic servo drive
Troubleshooting
94
8.2 Fault handling flowcharts
Err01: IPM fault
ERR01
Is the drive output loop grounded or
short circuited?
Is the motor power cable short
circuited or shorted to the ground or
thermocouple?
No
Remove the wiring fault.
Yes
Remove the wiring fault or
replace the motor.
Yes
Is the braking resistor output short
circuited or shorted to the housing?
Remove the wiring fault or
replace the braking
resistor.
Yes
No
Is the drive model displayed on the
HMI same as that on the nameplate?
No
No
Set the drive again.
Contact the local
dealer or our
technical support.
Yes
Err02: Overcurrent
ERR02
Is the motor rotation speed too low
(within ±10 rotations) according to
fault records?
Does the motor vibrate greatly during
running?
No
Yes
Yes
No
Is the drive output loop grounded or
short circuited?
Yes
No
Remove the wiring fault.
Remove the resolver wiring
fault and motor three-phase
output wiring fault. Re-measure
the motor initial angle after re-
wiring.
Adjust the speed/ pressure
proportional/integral gains to
make the system run smoothly.
Contact the local
dealer or our
technical support.