Lenze smd401 Operating Instructions Manual page 22

Troubleshooting and fault elimination
Error
0C1
Short-circuit or overload
0C2
Earth fault
0C6
Motor overload (I t overload)
2
0H
Controller overtemperature
OU
Overvoltage on DC bus
rSt
Faulty auto-TRIP reset
Sd5
Loss of 4-20 mA reference
SF
Single phase fault
(1) The drive can only be restarted if the error message has been reset; see c70
20
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Cause
Short-circuit
Excessive capacitive charging
current of the motor cable
Acceleration time (C12, c01) too
short
Defective motor cable
Internal fault in motor
Frequent and long overload
Grounded motor phase
Excessive capacitive charging
current of the motor cable
Motor is thermally overloaded,
due to:
• impermissable continuous current
• frequent or too long acceleration
processes
Controller too hot inside
Mains voltage too high
Excessively short deceleration time
or motor in generator mode
Earth leakage on the motor side
More than 8 errors in 10 minutes
4-20 mA signal is below 2 mA
(C34 = 4)
A mains phase has been lost
ENGLISH
Remedy
(1)
Find reason for short-circuit; check
motor cable
Use shorter motor cables with lower
charging current
• Increase acceleration time
• Check controller selection
Check wiring
Check motor
Check controller selection
Check motor/motor cable
Use shorter motor cables with lower
charging current
• Check controller selection
• Check setting of c20
• Reduce controller load
• Improve cooling
Check mains voltage
Increase deceleration time or use
dynamic braking option
Check motor/motor cable
(separate motor from controller)
Depends on the error
Check signal/signal wire
Check mains voltage