Section 8. Maintenance & Troubleshooting - Parker PDHX-E Series User Manual

Section 8. 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.
Fuses
PDHXE drives are fitted with fuses which limit circuit damage in the event of a fault occurring,
they are not user replaceable. If the drive fails to operate correctly or you suspect a fuse has
blown return the drive for repair. Warranty is void if the case is opened.
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 PDS15E-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.
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