Motor Periodic Inspection; Control Circuit Periodic Inspection; Cooling System Periodic Inspection - YASKAWA V1000 Series Installation & Start-Up Manual

6.2 Inspection
Inspection
Area
Braking • Inspect for discoloration of heat stress on
Resistors or around resistors.
• Inspect for leakage, discoloration, or
Electrolytic cracks.
(bus) Capacitors • Inspect the relief valve for swelling,
rupture, or leakage.
Diodes and • Inspect for accumulation of dust or other
IGBTs foreign particles on components.
Operation • Check for increased vibration or
Check abnormal noise.
• Inspect terminals for stripped, damaged
General or loose connections.
• Check for tightness.
• Inspect for unusual discoloration,
burning or strange odor, noticeable rust
Printed Circuit
or corrosion, proper seating of
Boards
connectors, dust, oil, or other
contamination.
• Check for abnormal oscillation or
unusual noise.
Cooling Fan
• Check for damaged or missing fan
blades.
• Inspect for dust or other foreign material
Heatsink
collected on the surface.
250
Inspection Points

Motor Periodic Inspection

Control Circuit Periodic Inspection

Cooling System Periodic Inspection

YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Corrective Action
• Minor discoloration may be
acceptable.
• If discoloration exists check for loose
connections.
• The drive has few serviceable parts
and may require complete drive
replacement.
• Use dry air to clear away foreign
matter.
• Use a pressure of: 39.2 x 10
10 Pa (4 - 6 kg •cm ).
4 2
• Stop the motor and contact qualified
maintenance personnel as required.
• Tighten loose screws and replace
damaged screws or terminals.
• If terminals are integral to a circuit
board then board or drive replacement
may be required.
• Re-seat loose connectors.
• Replace PCBs if wiping or vacuuming
with anti-static vacuum cannot clean
the PCB.
• Do not use solvents on PCBs.
• Use dry air to clear away foreign
matter. Use a pressure of
39.2 x 10 4 to 58.8 x 10
(4 - 6 kg •cm 2 ).
• The drive has few serviceable parts
and may require complete drive
replacement.
• Replace as required.
• Refer to Drive Cooling Fans on
page 254 for information on cleaning
or replacing the cooling fan.
• Use dry air to clear away foreign
matter.
• Use a pressure of 39.2 x 10
10 4 Pa (4 - 6 kg•cm 2 ).
Checked
to 58.8 x
4
4 Pa
4 to 58.8 x