24
PDS SERIES DRIVE USER GUIDE
MAINTENANCE & TROUBLESHOOTING
Maintenance
Routine maintenance is not necessary, but occasional checking of
the following points is recommended.
Motor Maintenance
Periodically check the motor to ensure that no bolts or couplings
have become loose during operation, and check the motor cable or
leads periodically for signs of wear. Do not make very tight bends or
pull on the cable during normal operation. Check all cable
connectors.
Drive Maintenance
Check that the drive is clear of loose material and has a free flow of
air through the ventilation slots. Enclosures must be connected to
earth ground to provide a low-impedance path for ground-fault or
noise-induced currents. Check the security of the ground
connections.
Troubleshooting
Fault LED
The red LED indicates one of the following fault conditions:
1. Motor wiring short-circuit either across phases or between
phases.
2. Motor wiring short-circuit phase to GND (earth).
3. Motor supply overvoltage or undervoltage.
4. Internal supply failure.
5. Drive internal overtemperature.
The fault LED will also light up if the motor is decelerating a high -
inertia load too quickly. The drive will shut down under this
condition. If this occurs, you can either reduce the deceleration
rate/load inertia, or use a PDS15-D (power dump option). See
INSTALLATION section for more information on the regenerative
power dump option.
Note that the fault LED comes on momentarily when power is
removed from the drive. This is caused by the supply rails dropping
below a safe operating level, and is an indication that the fault
circuitry is functioning correctly. You should always ensure that the
fault LED is extinguished before re-applying the power.
Motor Fails to Move
Test the motor to see if it has holding torque. If there is no holding
torque, here are some probable causes:
•
There is no power.
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