Error elimination
Error messages at the keypad or in the parameter setting program Global Drive Control
11
Troubleshooting and fault elimin ation
11.4
11.4.2
L
11.4-3
EDS82EV903-1.0-11/2002
Keypad RemedyCauseErrorPC
1)
OC
12 Earth fault Grounded motor phase Check motor, check motor cable
a
Excessive capacitive charging current of the motor
cable
Use shorter motor cables with lower charging current
Deactivate earth-fault detection for testing purposes
OC3
a
13 Overload inverter during
acceleration or short circuit
Acceleration time to o short (C0012) • Increase acceleration time
• Check drive selection
Defective motor cable Check wiring
Interturn fault in the motor Check motor
OC4
a
14 Overload controller during
deceleration
Deceleration time set t oo short (C0013) • Increase deceleration time
• Check size of external brake resistor
OC5
a
15 Cont roller overload in
stationary operation
Frequent and long overload Check drive selection
OC6
a
16 Motor overload (I
2
x t overload) Motor is thermally overloaded, for instance,
because of
• impermissible continuous current • Check drive selection
• frequent or too long acceleration processes • Check sett i ng of C0120
OH
a
50 Heatsink temperature >
+85 °C
Ambient temperature too high Allow controller to cool and ensure better ventilation
OH
- Heatsink temperature > Heatsink very dirty Clean heatsink
e
+80 °C
Impermissibly high currents or too frequent and too
long acceleration
• Check drive selection
• Check load, if necessary, replace defective bearings
OH3
a
53 PTC monitoring (TRIP)
(is displayed if C0119 = 1 or 4)
Motor t oo hot because of excessive currents or
frequent and too long accelerations
Check drive selection
PTC not connected Connect PTC or switch off monitoring
OH4
a
54 Cont roller overtemperature Controller too hot inside • Reduce controller load
• Improve cooling
• Check fan in the controller
OH51
203 PTC monitoring
(is displayed if C0119 = 2 or 5)
Motor t oo 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
c
Braking operation • Prolong deceleration times.
• 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)
Pr
a
75 Faulty parameter transfer when
using the keypad
All parameter sets are defective It is absolutely necessary to repeat the data transfer o r
load the Lenze setting before enabling the controller.
Pr1
a
72 Wrong PAR1 transfer when
using the keypad.
PAR1 is defective.
Pr2
a
73 Wrong PAR2 transfer when
using the keypad.
PAR2 is defective.
Pr3
a
77 Wrong PAR3 transfer when
using the keypad.
PAR3 is defective
Pr4
a
78 Wrong PAR4 transfer when
using the keypad.
PAR4 is defective
Pr5
a
79 Internal fault Contact Lenze