KEB COMBIVERT F4-F Betriebsanleitung Seite 81

Possible Cause
- Input voltage too low or unstable
- Voltage losses due to incorrect cabling
- Input voltage too high
- Deceleration torque too high
-Short-circuit or ground fault at the output
- Insufficient cooling
- Ambient temperature too high
- Fan clogged
- Inverter overloaded
- PTC - triggering
(PTC = positive temperature coefficient)
- PTC - line defective
- external entry fault
! Only when Parameter CP.15 = 0 !
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- Signal on terminal X2.3 and/or X2.4 missing
! Only when Parameter CP.35 = 0 !
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- Input voltage too low
- Ladeshunt relay defective
(PTC = positive temperature coefficient)
6. Fault Diagnosis
Fault Remedy
- Check voltage supply
- Check input line
- Check voltage supply
- Connect braking resistor
- Test motor lines for short-circuit or earth-fault
- Improve cooling
- Upload inverter
- Upload motor
- Reduce torque limit (Parameter CP.9)
- Let motor cool down
- Check PTC - line
- Remove external fault and press RESET
- Fault correction only ex works!
- Check wiring at the inputs
- Fault correction only ex works!
- Fault correction only ex works!
- Check voltage supply
- Fault correction only ex works!
ANTRIEBSTECHNIK
GB
GB 39