Lenze 8200 - Page 239

Troubleshooting and fault elimination
8200SHB0199
8-3
Display RemedyCauseFault
OC2 Earth fault
Grounded motor phase Check motor; check cable
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Excessive capacitive charging current of
the motor cable
Use motor cable which is shorter or has a lower
capacitance
OC3 Overload inverter during
acceleration or short circuit
Acceleration time too short (C012) - Increase acceleration time
- Check drive selection
Defective motor cable Check wiring
Interturn fault in the motor Check motor
OC4 Overload controller during
deceleration
Deceleration time too short (C013) - Increase deceleration time
- Check the selection of the brake resistor or
connect the brake chopper
OC5 Ixtoverload
Frequent and too long acceleration
processes with overcurrent
Check drive selection
Permanent overload with
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motor
>1.05xI
rx
OC6 Overload motor
Motor is thermallyoverloaded, for
instance, because of
- impermissible continuous current - Check drive selection
- frequent or too long acceleration
processes
- Check the setting under C120
OH Heat sink temperature is
higher than the value set in
the controller
Ambient temperature
T
amb
>+40Cor+50C
- Allow controller to cool and ensure ventilation
- Check the ambient temperature in the control
cabinet
Heat sink very dirty Clean heat sink
Incorrect mounting position Change mounting position
OH3 PTC monitoring
Motor too hot because of excessive
currents or frequent and too long
accelerations
Check drive selection
PTC not connected Connect PTC or switch-off monitoring
(C0585 = 3)
OH4 Overtemperature unit Inside unit too hot - Reduce controller load
- Improve cooling
- Check fan in the controller
OU Overvoltage
Mains voltage too high Check voltage supply
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Feedback operation
Braking operation
- Prolong deceleration times
- For operation with brake choppers:
- Check the selection and connection of the
brake resistor
- Increase the deceleration times
Earth leakage on the motor side Check motor cable and motor for earth fault
(disconnect motor from inverter)
OUE Overvoltage Mains overvoltage longer than 5 s Check mains voltage
Pr Faulty parameter transfer
via the operating module
PAR1 a nd PAR2 a re de fe ctive
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Pr1 Faulty PAR1 transfer via the
operating module
PAR1 is defective
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transfer or load the factory setting before
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Pr2 Faulty PAR2 transfer via the
operating module
PAR2 is defective
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rSt Faulty auto-TRIP reset More than 8 fault messages in
10 minutes
Depends on the fault message
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