Troubleshooting and fault elimination
Error messages
15
L
EDK82EVXXX EN 2.0
Keypad RemedyCauseErrorPC
1)
L
- DC-bus undervoltage
Mains voltage too low Check mains voltage
,
DC-bus voltage too low Check supply module
400 V controller connected to 240 V mains Connect co ntrolle r to the appropriate mains voltage
OC1
*
11 Short circuit
Short circuit
•
Find reason for short circuit; check motor cable
•
Check braking resistor and cable for braking resistor
Excessive capacitive charging current of the motor
cable
Use shorter motor cables with lower charging current
O
2
12 Earth fault
Grounded motor phase Check motor, check motor cable
*
Excessive capacitive charging current of the motor
cable
Use shorter motor cables with lower charging current
Deactivate earth-fault detection for testing purposes
OC3
*
13 Overload inverter during
acceleration or short circuit
Acceleration time too short (C0012)
•
Increase accelera tion time
•
Check drive selection
Defective motor cable Check wiring
Interturn fault in the motor Check motor
OC4
*
14 Overload controller during
deceleration
Deceleration time set too short (C0013)
•
Increase decelera tion time
•
Check size of external brake resistor
OC5
*
15 Controller overload in
stationary operation
Frequent and long overload Check drive selection
OC6
*
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 setting of C0120
OH
*
50 Heatsink temperature
>+85°C
Ambient temperature too high Allow controller to cool and ensure better ventilation
O
- Heatsink temperature
Heatsink very dirty Clean heatsink
.
>+80°C
Impermissibly high currents or too frequent and too
long acceleration
•
Check drive selection
•
Check load, i f 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 insi de
•
Reduce controller load
•
Improve cooling
•
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
(Warning or TRIP configurable
Mains voltage too high Chec k voltage supply
OUE
*
22
under C0310)
Braking operation
•
Prolong deceleration times.
•
Operation with external brake resistor:
– Check dimensioning, connection and cable of the
brake resistor.
– Increase the decele ration times
Earth leakage on the motor side Check motor cable and motor for earth fault (disconnect
motor from inverter)
Pr
*
75 Faulty parameter transfer when
using the keypad
All parameter sets are defective
It is absolutely necessary to repeat the data transfer or
load the Lenze setting before enabling the controller.
Pr1
*
72 Wrong PAR1 transfer when
using the keypad.
PAR1 is defective.
Pr2
*
73 Wrong PAR2 transfer when
using the keypad.
PAR2 is defective.
Pr3
*
77 Wrong PAR3 transfer when
using the keypad.
PAR3 is defective
Pr4
*
78 Wrong PAR4 transfer when
using the keypad.
PAR4 is defective
Pr5
*
79 Internal fault EEPROM is defective Contact Lenze
Pt5
*
81 Time fault during parameter
set transfer
Data flow from keypad or PC interrupted, e. g.
keypad was disconnected during transfer
It is absolutely necessary to repeat the data transfer or
load the Lenze setting before enabling the controller.