Recommended Periodic Inspection - YASKAWA FSDrive-MV1000 Series Instructions For Use Manual

u Recommended Periodic Inspection
Table 6.2 outlines the recommended periodic inspections for Yaskawa drive installations. Although periodic inspections
should generally be performed once a year, 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 connect or disconnect wiring or service equipment while the power is on. Failure to
comply will result in serious injury or death. Before servicing, disconnect all power to the equipment. There may be
multiple sources of power and control power may be present although the CHARGE indicator LED is extinguished.
Verify that control power is removed. The internal capacitor and the Power Cell exterior surface and interior remain
charged even after the medium-voltage power supply is turned off. Verify the CHARGE indicator LED is extinguished
before servicing and remove control power. To prevent electric shock, wait for at least the time specified on the warning
label after all indicators are OFF, and then measure for unsafe voltages to confirm the drive has reached a safe level
before servicing.
Inspection Area 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 TOEP C710687 02B 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 parts 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 gauge.)
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 heatsink.
Make sure the appearance is clean, the terminals are tightened
properly, 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, bolts, or connections.
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 Inspection
Page Checked
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