Troubleshooting and fault elimination
Error messages
15
L
EDK82EVXXX EN 2.0
Keypad
Remedy
Cause
Error
PC
1)
LU
-
DC-bus undervoltage
Mains voltage too low
Check mains voltage
LU
,
DC bus undervoltage
DC-bus voltage too low
Check supply module
,
400 V controller connected to 240 V mains
Connect controller 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
OC2
12
Earth fault
Grounded motor phase
Check motor, check motor cable
OC2
*
12
Earth fault
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 acceleration time
•
Check drive selection
*
acceleration or short circuit
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 deceleration 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
OH
-
Heatsink temperature
Heatsink very dirty
Clean heatsink
OH
.
Heatsink temperature
> +80 °C
Impermissibly high currents or too frequent and too
long acceleration
•
Check drive selection
•
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
*
(is displayed if C0119 1 or 4)
PTC not connected
Connect PTC or switch off monitoring
OH4
*
54
Controller 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 too hot because of excessive currents or
frequent and too long accelerations
Check drive selection
(is displayed if C0119 2 or 5)
PTC not connected
Connect PTC or switch off monitoring
OU
,
-
DC-bus overvoltage
(Warning or TRIP configurable
d C0310)
Mains voltage too high
Check voltage supply
OUE
*
22
(
g
g
under C0310)
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
*
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.