YASKAWA V1000 Technical Manual page 293

Inspection Area
• Overall check of the main power circuit and
ground terminals
• Inspect equipment for discoloration from
overheating or deterioration.
General • Inspect for damaged or deformed parts.
• Inspect for dirt, foreign particles, or dust
collection on components.
• Inspect wiring and connections for discoloration,
Conductors and
damage, or heat stress.
Wiring
• Inspect wire insulation and shielding for wear.
• Inspect terminals for stripped, damaged, or loose
Terminals
connections.
• Inspect contactors and relays for excessive noise
during operation.
Relays and
Contactors
• Inspect coils for signs of overheating such as
melted or cracked insulation.
• Inspect for discoloration of heat stress on or
Braking Resistors
around resistors.
• Check for increased vibration or abnormal noise. • Stop the motor and contact qualified maintenance
Operation Check
• Inspect terminals for stripped, damaged or loose
connections.
General
• Check for tightness.
• 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.
• Inspect air intake and exhaust openings. They
Air Duct must be free from obstruction and properly
installed.
• Make sure the LED lights correctly.
LEDs
• Inspect for dust or other foreign material that may
have collected on surrounding components.
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.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Table 7.2 Periodic Inspection Checklist
Inspection Points
Main Circuit Periodic Inspection
Motor Periodic Inspection
Control Circuit Periodic Inspection
Cooling System Periodic Inspection
LED Periodic Inspection
Corrective Action
Take appropriate actions (e.g., tightening loose
connections).
• Replace damaged components as required.
• The drive has few serviceable parts and may require
complete drive replacement.
• Inspect enclosure door seal if present. Replace
components if cleaning is not possible.
• Remove foreign particles and dust with a vacuum
cleaner to avoid touching parts.
• Repair or replace damaged wiring.
• Tighten loose screws and replace damaged screws or
terminals.
• Check coil voltage for over or under voltage conditions.
• Replace damaged removable relays contactors or circuit
board.
• Minor discoloration may be acceptable.
• If discoloration exists check for loose connections.
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.
• Replace as required.
• Refer to Drive Cooling Fans on page 296
information on cleaning or replacing the cooling fan.
• Remove foreign particles and dust with a vacuum
cleaner to avoid touching parts.
• Visually inspect the area.
• Clear obstructions and clean air duct as required.
• Contact your Yaskawa representative if there is any
trouble with the LED or keypad.
• Clean the LED.
7.2 Inspection
Checked
for
7
293