Lenze 8200 series - Manual (Page 61)

Troubleshooting and fault elimination
UOMu_^MVMO 8-3
8.3 Fault indications
Display Fault Cause Remedy
--- No fault - -
EEr External fault (TRIP-Set) A digital input assigned to the
TRIP-Set function has been
activated
Check external encoder
H05 Internal fault Contact Lenze
LU Undervoltage DC-bus voltage too low D Check mains voltage
D Check supply module
OC1 Short circuit Short circuit Find out cause of short circuit; check
cable
Excessive capacitive charging
current of the motor cable
Use motor cable which is shorter or of
lower capacitance
OC2 Earth fault Grounded motor phase Check motor; check cable OC2 Earth fault
Excessive capacitive charging
current of the motor cable
Use motor cable which is shorter or of
lower capacitance
OC3 Overload inverter during
acceleration or short
circuit
Acceleration time too short
(C012)
D Increase acceleration time
D Check drive selection
circuit
Defective motor cable Check wiring
Interturn fault in the motor Check motor
OC4 Overload controller during
deceleration
Deceleration time too short
(C013)
D Increase deceleration time
D Check the selection of the brake
resistor or connect the brake
chopper
OC5 I x t overload Frequent and too long
acceleration processes with
overcurrent
Check drive dimensioning
Permanent overload with
I
motor
> 1.05 x I
Nx
OC6 Overload motor Motor is thermally overloaded, for
instance, because of
D
impermissible continuous
current
D Check drive selection
D frequent or too long
acceleration processes
D Check the setting under C120
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