Precautions For Maintenance And Inspection; Check Items - Mitsubishi FR-E520-0.1KN Instruction Manual

5.3 Precautions for Maintenance and Inspection

5.3 Precautions for Maintenance and Inspection
The transistorized inverter is a static unit mainly consisting of semiconductor devices.
Daily inspection must be performed to prevent any fault from occurring due to adverse
influence by the operating environment, such as temperature, humidity, dust, dirt and
vibration, changes in the parts with time, service life, and other factors.
5.3.1 Precautions for maintenance and inspection
When the maintenance/inspection of the inverter is to be performed in the CC-Link
communication status, remove the terminal block for CC-Link communication signals.
Therefore, when more than 10 minutes have elapsed after power-off, make sure that
the voltage across the main circuit terminals P - N (+ - −) of the inverter is 30VDC or
less using a tester, etc. Then, access the inverter for inspection.

5.3.2 Check items

( 1 ) Daily inspection
$ Check the following:
1) Motor operation fault
2) Improper installation environment
3) Cooling system fault
4) Unusual vibration and noise
5) Unusual overheating and discoloration
$ During operation, check the inverter input voltages using a meter.
( 2 ) Cleaning
Always run the inverter in a clean state.
When cleaning the inverter, gently wipe dirty areas with a soft cloth immersed in
neutral detergent or ethanol.
Note: Do not use solvent, such as acetone, benzene, toluene and alcohol, as they
will cause the inverter surface paint to peel off.
Do not use detergent or alcohol to clean the display and other sections of the
parameter unit (FR-PU04) as these sections do not like them.
PROTECTIVE FUNCTIONS
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