Lenze 8200 series - Manual (Page 62)

Troubleshooting and fault elimination
8-4 UOMu_^MVMO
Display Remedy Cause Fault
OH Heat sink temperature is
higher than the value set
in the controller
Ambient temperature
T
amb
> +40 °C or +50 °C
D Allow controller to cool and ensure
ventilation
D 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 current or frequent and
too long acceleration
Check drive dimensioning
PTC not connected Connect PTC or switch off monitoring
(C0585=3)
OH4 Overtemperature unit Inside unit too hot D Reduce controller load
D Improve cooling
D Check fan in the controller
OH51 PTC monitoring (Warning) Motor too hot because of
excessive current or frequent and
too long acceleration
Check drive selection
PTC not connected Connect PTC or switch off monitoring
OV Overvoltage Mains voltage too high Check voltage supply O O e o tage
Feedback operation
Braking operation D Increase deceleration times.
D 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
rSt Faulty auto-TRIP reset More than 8 fault messages in
10 minutes
Depends on the fault message
Pr Faulty parameter transfer
via the operating module
PAR1 and PAR2 are defective. It is absolutely necessary to repeat the
data transfer or load the factory
i b f bli h ll
Pr1 Faulty PAR1 transfer via
the operating module
PAR1 is defective.
data transfer or load the factory
setting before enabling the controller.
Pr2 Faulty PAR2 transfer via
the operating module
PAR2 is defective.
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