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Fault detection and elimination
Fault messages
U
EDK82MV222 DE/EN/FR 9.0
NPT
L
Remedy
Cause
Fault
PC
1)
Keypad
C0119 1 or 4)
No PTC connected
Connect PTC or switch off
monitoring
OH4
54
Controller
overtemperature
Controller too hot inside
z
Reduce controller load
z
Improve cooling
z
Check fan in the controller
OH51
203
PTC monitoring
(Display when
C0119 = 2 or 5)
Motor too hot due to
impermissibly high currents or
frequent and too long
acceleration processes
Check drive dimensioning
No PTC connected
Connect PTC or switch off
monitoring
OU
-
DC bus
overvoltage
(Message or TRIP
configurable in
C0310)
Mains voltage too high
Check supply voltage
OUE
22
Braking operation
z
Increase deceleration times
z
When operating with an
external brake resistor:
– Check dimensioning,
connection and supply cable
of the brake resistor
– Increase deceleration times
Earth leakage on the motor
side
Check motor supply cable and
motor for earth fault (disconnect
motor from the inverter)
Pr
75
Faulty parameter
transmission
when using the
keypad
All parameter sets are
defective
Before enabling the controller,
repeat the data transfer or load
the Lenze setting
Pr1
72
Faulty PAR1
transfer with
keypad
Parameter set 1 is defective
Pr2
73
Faulty PAR2
transfer with
keypad
Parameter set 2 is defective
Pr3
77
Faulty PAR3
transfer with
keypad
Parameter set 3 is defective
Pr4
78
Faulty PAR4
transfer with
keypad
Parameter set 4 is defective
Pr5
79
Internal fault
EEPROM is defective
Contact Lenze
Pt5
81
Time error during
parameter set
transfer
Data flow from keypad or PC
interrupted, e.g. because
keypad was disconnected
during transfer
Before enabling the controller,
repeat the data transfer or load
the Lenze setting.
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