Nordson AltaBlue, Customer Product Manual

Page: 121 / 234

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.