Lenze ETMD Tmd frequency inverter - Manual (Page 23)

22 ENGLISH
Troubleshooting and fault elimination
(1) The drive can only be restarted if the error message has been reset; see c70
Error Cause Remedy (1)
External error Digital input “TRIP set” is active Remove external error
0 Internal fault Please contact Lenze
Communication error Serial timer has timed out Check serial link connections
Communication error Serial communication failure Please contact Lenze
Remote keypad fault Remote keypad disconnected Check remote keypad connections
1 Drive identification fault Attempt was made to perform motor
calibration before setting C86...C91 Must set C86...C91 before performing
motor calibration (see c48)
1 Short-circuit or overload Short-circuit Find reason for short-circuit; check
motor cable
Excessive capacitive charging
current of the motor cable Use shorter motor cables with lower
charging current
Acceleration time (C12, c01) too short • Increase acceleration time
• Check controller selection
Defective motor cable Check wiring
Internal fault in motor Check motor
Frequent and long overload Check controller selection
Earth fault Grounded motor phase Check motor/motor cable
Excessive capacitive charging
current of the motor cable Use shorter motor cables with lower
charging current
C Motor overload (I 2 t
overload)
Motor is thermally overloaded, due to:
• impermissable continuous current
• frequent or too long acceleration
processes
• Check controller selection
• Check setting of c20
LP1 Loss of motor phase Open-circuit on controller output when in
vector mode (C14 = 4, 5) • Motor must be connected in vector
mode
• Check motor/motor cable
H Controller
overtemperature Controller too hot inside • Reduce controller load
• Improve cooling
U Overvoltage on DC bus Mains voltage too high Check mains voltage
Excessively short deceleration time or
motor in generator mode Increase deceleration time or use
dynamic braking option
Earth leakage on the motor side Check motor/motor cable
(separate motor from controller)
Flying restart fault Controller was unable to synchronize with
motor during restart attempt Check motor/load
Faulty auto-TRIP reset More than 8 errors in 10 minutes Depends on the error
Loss of 4-20 mA
reference 4-20 mA signal (terminal 8I) is below 2
mA (C34 = 5) Check signal/signal wire
Single phase fault A mains phase has been lost Check mains voltage