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Chapter 6 - Troubleshooting & Maintenance
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6.6 Maintenance
The ACtionMaster series is an industrial electronic product with advanced semiconductor components,
however temperature, humidity, vibration and eventually aging parts may still affect it. To avoid this, it is
recommended to perform routine inspections.
6.6.1 Precautions
Be sure to remove the drive power input while performing maintenance.
Be sure to perform maintenance only after checking that the DC bus has discharged. The bus
capacitors in the electronic circuit can still be charged even after the power is turned off.
The correct output voltage can only be measured by using a rectifier voltage meter. Other voltage
meters including digital voltage meters are likely to display incorrect values caused by the high
frequency PWM output voltage of the drive.
6.6.2 Routine Inspection
Be sure to check the following before operation.
The conditions of the installation location.
The conditions of the drive cooling.
Abnormal vibration.
Abnormal heating.
6.6.3 Periodical Inspection
Any loose bolt, nut or rust caused by surrounding conditions? If so, tighten up or replace.
Any deposits inside of the drive of cooling fan? If so, remove the deposits using air.
Any deposit on the drive’s PCB (Printed Circuit Boards)? If so, remove the deposits using air.
Any abnormal contacts in the various connectors of the drive’s PCB? If so, check the condition of the
connector in question.
Check the rotating condition of the cooling fan, the size and condition of the capacitors and the
connections with the magnetic contactor. Replace it if there is any abnormality.