Lenze E82EV 8200 vector 0.25kW-2.2kW - Manual (Page 160)

Troubleshooting and fault elimination
Fault elimination
Fault messages
8
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
l 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) l Increase acceleration time
l 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
l 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
l frequent or too long
acceleration processes l Check setting of C0120