Maintenance and Inspection
Chapter 8-3
8-3 Maintenance and Inspection
Do not touch the Inverter terminals while the power is being supplied.
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WARNING
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WARNING
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WARNING
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WARNING
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Caution
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Caution
Maintenance or inspection must be performed only after turning OFF the power supply, confirming that the CHARGE indicator (or status indicators) is turned OFF, and after waiting for the time specified on the front cover. Not doing so may result in electrical shock.
Maintenance, inspection, or parts replacement must be performed by authorized personnel. Not doing so may result in electrical shock or injury.
Do not attempt to take the Unit apart or repair. Doing either of these may result in electrical shock or injury.
Carefully handle the Inverter because it uses semiconductor elements.
Careless handling may result in malfunction.
Do not change wiring, disconnect connectors, the Operator, or optional items, or replace fans while power is being supplied. Doing so may result in injury, damage to the product, or malfunction.
Daily Inspection
Periodic Inspection
Check the following items with the system in operation.
• The motor should not be vibrating or making unusual noises.
• There should be no abnormal heat generation.
• The output current value shown on the monitor display should not be higher than normal.
• The cooling fan on the bottom of the Inverter should be operating normally, if the Inverter model has the cooling fan.
Check the following items during periodic maintenance.
Before beginning inspection, be sure to turn off the power supply. Confirm that all the indicators on the front panel have turned off, and then wait until at least
1 minute has elapsed before beginning the inspection.
Be sure not to touch the terminals right after the power has been turned off.
Otherwise, an electric shock may occur.
• The terminal screws of the Inverter should not loose.
• There should be no conductive dust or oil mist on the terminal block or inside the Inverter.
• The mounting screws of the Inverter should not be loose.
• No dirt or dust should be accumulating on the radiation fin.
• No dust should be accumulating on the vents of the Inverter.
• There should be no abnormalities in the outward appearance of the
Inverter.
• There should be no unusual noises or vibration and the accumulated operating time should not exceeded the specifications.
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Maintenance and Inspection
Chapter 8-3
Periodic Maintenance Parts
The Inverter is configured of many parts, and these parts must operate properly in order to make full use of the Inverter’s functions. Among the electronic components, there are some that require maintenance depending on their usage conditions. In order to keep the Inverter operating normally over a long period of time, it is necessary to perform periodic inspections and replace parts according to their service life.
Periodic inspection standards vary with the installation environment and usage conditions of the Inverter.
The maintenance periods of the Inverter are described below. Keep them as reference.
Maintenance Periods (Reference)
• Cooling fan: 2 to 3 years
• Electrolytic capacitor: 5 years
• Fuse: 10 years
The usage conditions are as follows:
• Ambient temperature: 40°C
• Load factor: 80%
• Operation: 8 hours per day
• Installation: According to instructions in manual
It is recommended that the ambient temperature and power-on time be reduced as much as possible to extend of the life of the Inverter.
Note For details regarding maintenance, consult your OMRON-YASKAWA representative.
Replacement of Cooling Fan
If the FAN fault is displayed or the cooling fan needs replacement, take the following steps to replace it.
Cooling Fan Models
3-phase 200-V AC
Single-phase 200-V AC
3-phase 400-V AC
CIMR-J7AZ21P5 or 3G3JV-22P2
CIMR-J7AZ24P0
CIMR-J7AZB1P5
CIMR-J7AZ41P5 or CIMR-J7AZ42P2
CIMR-J7AZ44P0
FAN001062
FAN001063
FAN001062
FAN001062
FAN001063
Replacing Cooling Fan (68- or 140-mm-wide Inverters)
1.
Press the left and right sides of the fan cover located on the lower part of the radiation fin in the arrow directions. Then lift the bottom of the Fan in the arrow 2 direction to remove the Fan as shown in the following illustration.
Radiation fin (Heat sink)
Wind direction
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Maintenance and Inspection
Chapter 8-3
2.
Hold the fan wire and pull the protective tube of the cover in the arrow 3 direction.
Protective tube
There is a connector inside.
Replacing Cooling Fan of
108-mm-wide Inverter
Model
Fan wind direction
3.
Slide the protective tube and remove the internal connector.
4.
Remove the Fan from the fan cover.
5.
Mount the new Fan on the fan cover. At this time, make sure that the wind direction of the Fan will be in the direction of the heat radiation fin.
6.
Attach the connector, cover the connector with the protective tube, and insert the connector into the cover.
7.
Mount the fan cover with the new Fan to the lower part of the heat radiation fin. Make sure that the fan cover snaps on securely with the heat radiation fin.
1.
Dismount the front cover, bottom cover, and fan connector CN4.
Cooling fan connector
(CN4 built in)
Wiring groove
Heat radiation fin
(Heat sink)
Fan wind direction
2.
Press the left and right sides of the fan cover located on the lower part of the radiation fin in the arrow 1 directions. Then lift the bottom of the Fan in the arrow 2 direction to remove the fan as shown in the following illustration.
Disconnect the wire from the electrical inlet on the bottom of the plastic casing.
3.
Remove the Fan from the fan cover.
4.
Mount the new Fan on the fan cover. At this time, make sure that the wind direction of the fan will be in the direction of the heat radiation fin.
5.
Mount the fan cover with the new Fan to the lower part of the heat radiation fin. Make sure that the fan cover snaps on securely with the heat radiation fin.
6.
Wire the power line through the electrical inlet on the bottom of the plastic casing and the wiring groove into the internal circuitry of the Inverter.
7.
Attach the wire to connector CN4 and attach the bottom cover and front cover.
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