2 inspection – Yaskawa J1000 Compact V/f Control Drive User Manual
Page 167
Inspection
Area
Inspection Points
Corrective Action
Checked
Conductors and
Wiring
• Inspect wiring and connections for
discoloration, damage, or heat stress.
• Inspect wire insulation and shielding
for wear.
• Repair or replace damaged wiring.
Terminals
• Inspect terminals for stripped,
damaged, or loose connections.
• Tighten loose screws and replace
damaged screws or terminals.
Relays and
Contactors
• Inspect contactors and relays for
excessive noise during operation.
• Inspect coils for signs of overheating
such as melted or cracked insulation.
• Check coil voltage for over or under
voltage conditions.
• Replace damaged removable relays
contactors or circuit board.
Braking
Resistors
• Inspect for discoloration of heat stress
on or around resistors.
• Minor discoloration may be
acceptable.
• If discoloration exists check for
loose connections.
Control Circuit Periodic Inspection
General
• Inspect terminals for stripped, damaged
or loose connections.
• Check for tightness.
• 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.
LED Periodic Inspection
LEDs
• Make sure the LED lights correctly.
• Inspect for dust or other foreign
material that may have collected on
surrounding components.
• Contact your Yaskawa
representative if there is any trouble
with the LED or keypad.
• Clean the LED.
Cooling System Periodic Inspection
Cooling Fan
• Check for abnormal oscillation or
unusual noise.
• Check for damaged or missing fan
blades.
• Replace as required.
•
Refer to Drive Cooling Fans on
cleaning or replacing the cooling fan.
Heatsink
• Inspect for dust or other foreign
material collected on the surface.
• Remove foreign particles and dust
with a vacuum cleaner to avoid
touching parts.
Air Duct
• Inspect air intake and exhaust openings.
They must be free from obstruction and
properly installed.
• Visually inspect the area.
• Clear obstructions and clean air duct
as required.
Motor Periodic Inspection
Operation
Check
• Check for increased vibration or
abnormal noise.
• Stop the motor and contact qualified
maintenance personnel as required.
Note:
Periodic inspections should be performed every one or two years. The drive, however, may require more
frequent inspection due to poor environments or rigorous use.
6.2 Inspection
YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide
167
6
Periodic Inspection & Maintenance