Troubleshooting
6-8
Part 1120277_01
E 2012 Nordson Corporation
Motor Drive Faults (contd)
Table 6-3 Motor Drive Faults
Fault Code Probable Cause Corrective Action
CrF
Capacitor load circuit
Motor drive hardware failure Replace the motor drive.
EEF
EEPROM fault
Internal memory fault
S Check the environment (electromagnetic
compatibility).
S Replace the motor drive.
InF
Internal fault
Internal fault
S Check the environment (electromagnetic
compatibility).
S Replace the motor drive.
OCF
Overcurrent
S Adhesive too cold
S Pump or drive failure
S Foreignobjectinpump
S Verify temperature setpoints and change
as needed. The temperature setpoints
should be within the range recommended
by the material manufacturer.
S Replace the pump or the d rive assembly.
S Replace the pump.
SCF
Motor short-circuit
Short-circuit or earthing at the motor
drive output
Check the cables between the motor drive
and the motor; also check the motor
insulation.
OHF
Motor drive overheated
Motor drive temperature too high
S Check the motor load, the motor drive
ventilation, and the environment. Wait for
the motor drive to cool down before
restarting.
S Ensure that the unit ambient temperature
does not exceed 50 _C (120 _F), that the
electrical enclosure vents are not
blocked, and that the electrical enclosure
fan is operating properly.
Continued...
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