Delta VFD-ED Series, Руководство пользователя

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Ch15 Suggestions and Error Corrections for Standard AC Motor Drives | VFD-ED
15-3
15-1 Maintenance and Inspections
For regular maintenance, first stop operation, then turn off the power, and then take off the outer
cover. Even after turning off the power supply, charging voltages remaining in the filter capacitor
require some time to discharge. To avoid danger, operation must not start until the charging indicator
goes off, and you confirm the voltage with a voltmeter to be below the safety value (
≤
25 V
DC
).
Ambient environment
Items to Check Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
Check the ambient temperature, humidity,
and vibration and check for any dust, gas, oil
or water drops. Visual inspection and
measurement with equipment
with standard specification
○
Check for any dangerous objects Visual inspection
○
Voltage
Items to Check Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
Check that the voltage of main circuit and
control circuit are correct. Measure with multimeter with
standard specifications.
○
Digital keypad display
Items to Check Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
Check that the display is clear for reading Visual inspection ○
Check for any missing characters Visual inspection ○
Mechanical parts
Items to Check Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
Check for any abnormal sound or vibration Visual and audible inspection ○
Check for any loose bolts Securely tighten
○
Check for any deformed or damaged parts Visual inspection ○
Check for any color change caused by
overheating
Visual inspection ○
Check for any dust or dirt Visual inspection ○