Omron Q2A Series Technical Manual

Periodic Inspection and Maintenance
8
8.2 Inspection
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 307
Table 8.2 Main Circuit Periodic Inspection Checklist
Inspection Area Inspection Points Corrective Action Checked
General
• Examine equipment for discoloration from too
much heat or deterioration.
• Examine for damaged parts.
• Replace damaged components as necessary.
• The drive does not have many serviceable parts
and it could be necessary to replace the drive.
Examine for dirt, unwanted particles, or dust on
components.
• Examine enclosure door seal.
• Use a vacuum cleaner to remove unwanted
particles and dust without touching the
components.
• If you cannot remove unwanted particles and dust
with a vacuum cleaner, replace the components.
Conductors and Wiring
• Examine wiring and connections for discoloration
or damage. Examine wiring and connections for
discoloration from too much heat.
• Examine wire insulation and shielding for
discoloration and wear.
Repair or replace damaged wiring.
Terminal Block
Examine terminals for stripped, damaged, or loose
connections.
• Tighten loose screws.
• Replace damaged screws or terminals.
Note:
On drive models 4031, and 4038, you cannot
replace the hex screws.
Electromagnetic Contactors and Relays
• Examine contactors and relays for too much noise
during operation.
• Examine coils for signs of too much heat, such as
melted or broken insulation.
• Check coil voltage for overvoltage or undervoltage
conditions.
• Replace broken relays, contactors, or circuit boards
that you can remove.
Dynamic Braking Option
Examine the insulation for discoloration from too
much heat.
If there is discoloration in the option, check to make
sure that the wiring is not damaged. A small quantity
of discoloration is not a problem.
Electrolytic Capacitor
• Examine for leaks, discoloration, or cracks.
• Check if the cap has come off, if there is swelling,
or if there are leaks from broken sides.
The drive does not have many serviceable parts and it
could be necessary to replace the drive.
Diodes, IGBT (Power Transistor)
Examine for dust or other unwanted material collected
on the surface.
• Use a vacuum cleaner to remove unwanted
particles and dust without touching the
components.
• If you cannot remove unwanted particles and dust
with a vacuum cleaner, replace the components.
Table 8.3 Motor Periodic Inspection Checklist
Inspection Area Inspection Points Corrective Action Checked
Operation Check Check for increased vibration or unusual noise.
Stop the motor and contact approved maintenance
personnel as necessary.
Table 8.4 Control Circuit Periodic Inspection Checklist
Inspection Area Inspection Points Corrective Action Checked
General
• Examine terminals for stripped, damaged, or loose
connections.
• Make sure that all terminals have been correctly
tightened.
• Tighten loose screws.
• Replace damaged screws or terminals.
• If terminals are integral to a circuit board, it could
be necessary to replace the control board or the
drive.
Circuit Boards
• Check for odor, discoloration, or rust.
• Make sure that all connections are correctly
fastened.
• Make sure that the surface of the circuit board does
not have dust or oil mist.
• Tighten loose connections.
• Use a vacuum cleaner to remove unwanted
particles and dust without touching the
components.
• If you cannot remove unwanted particles and dust
with a vacuum cleaner, replace the components.
• Do not use solvents to clean the board.
• The drive does not have many serviceable parts
and it could be necessary to replace the drive.
Table 8.5 Cooling System Periodic Inspection Checklist
Inspection Area Inspection Points Corrective Action Checked
Cooling Fans
• Check for unusual oscillation or unusual noise.
• Check for damaged or missing fan blades.
Clean or replace the fans as necessary.
Heatsink
• Examine for dust or other unwanted material
collected on the surface.
• Examine for dirt.
Use a vacuum cleaner to remove unwanted particles
and dust without touching the components.
Air Duct
Examine air intake, exhaust openings and make sure
that there are no unwanted materials on the surface.
Clear blockages and clean air duct as necessary.

Omron Q2A Series Specifications

General

Brand	Omron
Model	Q2A Series
Category	Controller
Language	English