ENGLISH
18
Troubleshooting and fault elimination
Error Cause Remedy
(1)
Earth fault Grounded motor phase Check motor/motor cable
Excessive capacitive charging
current of the motor cable
Use shorter motor cables with lower
charging current
Motor overload (I
2
t overload) Motor is thermally overloaded,
due to:
• impermissable continuous current
• frequent or too long acceleration
processes
• Check controller selection
• Check setting of c20
Controller overtemperature Controller too hot inside • Reduce controller load
• Improve cooling
Overvoltage on DC bus Mains voltage too high Check mains voltage
Excessively short deceleration time
or motor in generator mode
Increase deceleration time or use
dynamic braking option
Earth leakage on the motor side Check motor/motor cable
(separate motor from controller)
Faulty auto-TRIP reset More than 8 errors in 10 minutes Depends on the error
d
Loss of 4-20 mA reference 4-20 mA signal is below 2 mA
(C34 = 4)
Check signal/signal wire
Single phase fault A mains phase has been lost Check mains voltage
(1) The drive can only be restarted if the error message has been reset; see c70
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