KEB combivert R6-S Instruction Manual page 36

Troubleshooting and Diagnostics
Fault Cause
E.OC Ground fault or short
Noise/EMI
Supply or regenerative current too high
E.Fnet Line frequency out of range (57-60Hz,
based on 60Hz nominal line).
Generator power operation causes
voltage frequency swing.
Noise/EMI
E.PFd The incoming voltage (as measured by
the synchronization module and regen
unit) is fl uctuating and not stable during
initialization sequence of the regen unit.
E.LSF If the error does not reset itself after
power up and the fault remains, then the
following causes may be applicable:
Load-shunt defective
Input voltage wrong or too low
High losses in the supply cable
E.PUIN Excessive
distortion detected.
Bad synchronization module
Blown AC fuse
US - 36
main line input voltage
Solution
Check for any loose or missing power connections.
Check for similar errors on the (F5) Elevator Drive
indicating a ground fault, short, or excessive current.
This may indicate the cause of the fault is occurring
from the end of to the drive, motor contactor, or
motor.
Refer to Noise/EMI in Section 6.2.2.
Check to see if the utilization in CP.6 is high. Refer to
High Regenerative/Supply Current in Section 6.2.2.
Verify sizing with controller manufacturer
Monitor Main Line Frequency at CP.2. Output
frequency from generator may be too high/low and
may change as various other loads come on/offl ine.
Refer to Noise/EMI in Section 6.2.2.
Power cycle unit. If fault persists, try connecting the
CAT5 synch cable to a different X2B port on the
commutation choke or harmonic fi lter.
Replace synchronization cable.
Replace commutation choke or harmonic fi lter.
Unit must be serviced.
Verify line supply or transformer output supply and that
there is not excessive sag or brown-out conditions.
Replace commutation choke or harmonic fi lter.
For parallel units, make sure CAT5 cable is plugged
into the same synchronization module (choke or fi lter).
Check fuses.