Lenze E82MVxxx 2Bxxx - Manual (Page 134)

Troubleshooting and fault elimination
Fault messages
8
l
134 EDK82MV371 DE/EN/FR 7.0
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
OH
a
50 Heatsink
temperature >
+85 °C Ambient temperature is too
high Allow controller to cool and
provide for better ventilation
OH
e
− Heatsink
temperature >
+80 °C Heatsink is very dirty Clean heatsink
OH
e
− Heatsink
temperature >
+80 °C Impermissible high currents
or frequent and too long
acceleration processes l Check drive dimensioning
l Check load, replace
rough−running, defective
bearings, if necessary