Periodic Inspection - YASKAWA FSDrive-MV1000 Instructions Manual

◆ Periodic Inspection

Table 6.2 outlines the recommended periodic inspections for Yaskawa drives. Although periodic inspections should
generally be performed once a year or every two years, the drive may require more frequent inspection in harsh
environments or with rigorous use. Periodic inspection will help to avoid premature deterioration in performance or
product failure. Copy this checklist and mark the "Checked" column after each inspection.
Periodic Inspection
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DANGER! Electrical Shock Hazard. Do not perform inspection while the power for the main circuit and controls is on. Failure to
comply could result in death or serious injury. Before starting inspection, disconnect the power supply to all the
equipment. Internal capacitors retain some charge even after the main circuit power supply is turned off. Wait at least 15
minutes after turning the power off.
Location Inspection Category
Entire transformer and
Power Cell panel
Wires
Transformer
Transformer Panel
Power Cell Panel
Power Cells
Surge absorber
Circuits
Relays
Control Panel
Board
Digital Operator
Air filter
Cooling System
Cooling fan
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
Table 6.2 Periodic Inspection Checklist
Details of Inspection
Megger check between the main circuit terminals and ground
terminal
Check for loose screws, bolts, or connectors.
Check for damage to, or deformation or discoloration of parts
due to overheating or deterioration.
Check for soiling or adhesion of dust, etc.
Check for damage or deterioration of the cable sheath.
Check the windings for damage, and check for breakage in the
insulation sheets.
Check the windings for accumulation of dust, and for
adhesion of foreign matter.
Check for leakage from the smoothing capacitor.
Confirm that the safety valve of the smoothing capacitor is not
protruding.
Confirm that the smoothing capacitor has not expanded.
Measure the capacitance of the smoothing capacitor.
(Check the indication on the gage.)
Check for loose screws or bolts.
Check that the main circuit fuse and the control fuses on the
boards are normal.
Check for accumulated dust and dirt on the heat sink.
Make sure the appearance is clean, the terminals are tight, and
the installation bolts are securely fastened.
Confirm no abnormalities in protective and indication circuits.
Confirm that there is no chattering noise during operation.
Confirm timer operation.
Check for damaged contacts.
Check for abnormal smells and discoloration.
Confirm the power supply voltage.
Check for loose screws or bolts.
Make sure data appears on the digital operator properly.
Check for soiling of the digital operator.
Check for dirty or clogged filter.
Check for abnormal vibration and noise.
Confirm the bearing operation.
6.2 Periodic Inspection
Page Checked
164
164
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–
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164
165
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–
–
165
–
–
165
165
163
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