Troubleshooting
6-7
Part 1107600_03
2014
Nordson Corporation
Table 6‐3 Motor Drive Faults
(contd)
Code
Name
Possible Cause
Corrective Action
OHF
[DRIVE OVERHEAT]
Drive temperature too high
Check the motor load, the drive
ventilation, and the environment. Wait for
the drive to cool before restarting.
OLF
[MOTOR
OVERLOAD]
E
xcessive motor current
Check the motor load. Wait for the drive
to cool before restarting
OPF
[MOTOR PHASE
LOSS]
Loss of one phase at drive output
Output contactor open
Motor not connected or motor
power too low
Instantaneous instability in the
motor current
Check the connections from the drive to
the motor.
OSF
[MAINS
OVERVOLTAGE]
Line voltage too high or line supply
disturbed
Check the line voltage.
USF
[UNDERVOLTAGE]
Insufficient line supply or low
voltage condition
Check the supply voltage to the motor
drive.
Motor drive failed
Replace the motor drive.
Summary of Contents for AltaBlueA4TP
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