Troubleshooting and fault elimination – Lenze E82EV 8200 vector 0.25kW-2.2kW User Manual
Page 160

Troubleshooting and fault elimination
Fault elimination
Fault messages
l
160
EDK82EV222 DE/EN/FR 13.0
Remedy
Cause
Fault
PC
1)
Keypad
LU
c
−
DC−bus
undervoltage
Mains voltage is too low
Check mains voltage
Voltage in DC−bus connection is
too low
Check power supply module
400 V controller is connected to
240 V mains
Connect controller to correct mains
voltage
OC1
a
11
Short circuit
Short circuit
l
Search for cause of short circuit;
check motor cable
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Check brake resistor and cable to
brake resistor
Capacitive charging current of
the motor cable is too high
Use shorter/low−capacitance motor
cable
OC2
a
12
Earth fault
A motor phase has earth contact
Check motor; check motor cable
Capacitive charging current of
the motor cable is too high
Use shorter/low−capacitance motor
cable
Deactivate earth−fault detection for
test purposes
OC3
a
13
Controller overload
during acceleration
or short circuit
Set acceleration time is too short
(C0012)
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Increase acceleration time
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Check drive dimensioning
Defective motor cable
Check wiring
Interturn fault in the motor
Check motor
OC4
a
14
Controller overload
during deceleration
Set deceleration time is too short
(C0013)
l
Increase deceleration time
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Check dimensioning of the
external brake resistor
OC5
a
15
Controller overload
during steady−state
operation
Frequent and too long overload
periods
Check drive dimensioning
OC6
a
16
Motor overload
(I
2
x t overload)
Motor is thermally overloaded by
e.g.
l
impermissible continuous
current
l
Check drive dimensioning
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frequent or too long
acceleration processes
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Check setting of C0120