Yaskawa iQpump Drive User Manual - Manual (Page 160)

7.1 Periodic Inspection
160 YASKAWA TM.iQp.01 iQpump Drive User Manual
7.1 Periodic Inspection
Check the following items during periodic maintenance.
• The motor should not be vibrating or making unusual noises.
• There should be no abnormal heat generation from the iQpump drive or motor.
• The ambient temperature should be within the iQpump drive specification of -10
°C to 40°C (14°F to 104°F).
• The output current value shown in parameter U1-03 should not be higher than the motor rated current for an extended period of time.
• The cooling fan in the iQpump drive should be operating normally.
Always turn OFF the input power before beginning inspection. Confirm that the digital operator indicators on the front cover have all
turned OFF, and then wait an additional five minutes before beginning the inspection. Be sure not to touch terminals immediately after
the power has been turned off. Doing so can result in electric shock. Refer to Warnings and Cautions on page 7 .
Table 7.1 Periodic Inspections With No Power Applied
Apply power to the iQpump drive and conduct the following inspection.
Table 7.2 Periodic Inspections With Power Applied
WARNING
Prior to removing any protective cover or wiring any part of the iQpump drive, remove all power sources, including
main input power and control circuit power. Wait a minimum of 5 minutes after power removal, before removing any
cover. The charge lamp located within the iQpump drive should be off prior to working inside. Even if the charge lamp is
off, one must measure the AC input, output, and DC Bus potential to insure safe levels prior to resuming work. Failure to
adhere to this warning may result in personal injury or death.
Item Inspection Corrective Action
External terminals,
mounting bolts,
connectors, etc.
Are all screws and bolts tight? Tighten loose screws and bolts firmly.
Are connectors tight? Reconnect the loose connectors.
Cooling fins Are the fins dirty or dusty?
Clean off any dirt and dust with an air gun using clean and dry air
at a pressure between 55-85 psi.
Control PCB
Terminal PCB
Power PCB
Gate Drive PCBs
Is there any conductive dirt or oil mist on the PCBs?
Clean off any dirt and dust with an air gun using clean and dry air
at a pressure between 55-85 psi. Replace the boards if they
cannot be made clean.
Input Diodes
IPMs
Output Transistors
Is there any conductive dirt or oil mist on the modules or
components?
Clean off any dirt and dust with an air gun using clean and dry air
at a pressure between 55-85 psi.
DC bus capacitors Are there any irregularities, such as discoloration or odor? Replace the capacitors or iQpump drive.
Item Inspection Corrective Action
Cooling fan(s)
Is there any abnormal noise or vibration, or has the total operating time
exceeded 20,000 hours. Check U1-40 for elapsed cooling fan
operation time.
Replace Cooling Fan