Nordson AltaBlue - Page 121

Troubleshooting
8-9
Part 1120130
E 2011 Nordson Corporation
Table 8-4 Motor Drive Faults (contd)
Fault Code Probable Cause Corrective Action
OCF
Overcurrent
S Adhesive too cold
S Pump or drive failure
S Foreign object in pump
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 drive
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.
OLF
Motor overload
S Material exceeds the operating
viscosity range
S Excessive motor current
S Overpressure condition caused
by pressure control valve failure
S Use a material that falls within the
allowable viscosity range. Refer to
Section 10, Technical Data, for
viscosity ranges.
S Check the motor load. Wait for the
motor drive to cool down before
restarting.
S If the operating hydraulic pressure
exceeds the maximum allowable
pressure, replace the pressure
control valve. Refer to Section 8,
Technical Data, for pressure ranges.
OPF
Motor phase loss
Loss of one or more phases at
motor drive output
Check the connections between the
motor drive and the motor.
OSF
Overvoltage
S Line voltage too high
S Disturbed line supply
Check the unit input line voltage. Refer to
Section 10, Technical Data, for allowable
input voltage range.
CFF
Configuration fault
Motor drive parameter(s) changed Contact your Nordson representative.
USF
Undervoltage
S Line supply too low
S Transient voltage dip
Check the unit input line voltage. Refer to
Section 10, Technical Data, for allowable
input voltage range.