Fault detection and elimination
Fault messages
8
EDK82EV113 DE/EN/FR 8.1
155
L
Keypad RemedyCauseErrorPC
1)
OC6
16 Motor overload (I
2
x t
overload)
Motor is thermally overloaded, for
instance, because of
l impermissible continuous current l Check drive selection
l frequent or too long acceleration
processes
l Check setting of C0120
OH
50 Heat sink temperature
> +85 °C
Ambient temperature too high Allow controller to cool and ensure better
ventilation
OH
− Heat sink temperature
> +80 °C
Heat sink very dirty Clean heat sink
Impermissibly high currents or too
frequent and too long acceleration
l Check drive selection
l Check load, if necessary, replace
defective bearings
OH3
53 PTC monitoring (TRIP)
(is displayed if C0119
= 1 or 4)
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
OH4
54 Controller
overtemperature
Controller too hot inside l Reduce controller load
l Improve cooling
l Check fan in the controller
OH51
203 PTC monitoring
(is displayed if C0119
= 2 or 5)
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
OU
− DC−bus overvoltage
Mains voltage too high Check voltage supply
Braking operation l Prolong deceleration times.
l Operation with external brake resistor:
– Check dimensioning, connection and
cable 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)
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