Chapter 6. Suggestions and Error Corrections for Hybrid Servo DrivesC | VFD-VJ
6-4
Transformer and reactor of main circuit
Check Items Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
If there is any abnormal vibration or peculiar
smell
Visual, aural inspection and
smell
○
Magnetic contactor and relay of main circuit
Check Items Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
If there are any loose screws Visual and aural inspection
○
If the contact works correctly Visual inspection
○
Printed circuit board and connector of main circuit
Check Items Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
If there are any loose screws and connectors
Tighten the screws and
press the connectors firmly
in place.
○
If there is any peculiar smell and color change Visual and smell inspection
○
If there is any crack, damage, deformation or
corrosion
Visual inspection
○
If there is any liquid is leaked or deformation in
capacity
Visual inspection
○
Cooling fan of cooling system
Check Items Methods and Criterion
Maintenance
Period
Daily
Half
Year
One
Year
If there is any abnormal sound or vibration
Visual, aural inspection and
turn the fan with hand (turn
off the power before
operation) to see if it rotates
smoothly
○
If there is any loose screw Tighten the screw
○
If there is any color change due to overheat Change fan
○
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