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Inspection item
5.1.6

Replacement of parts

The inverter consists of many electronic parts such as semiconductor devices.
The following parts may deteriorate with age because of their structures or physical characteristics, leading to reduced
performance or fault of the inverter. For preventive maintenance, the parts must be replaced periodically.
Use the life check function as a guidance of parts replacement.
Part name
Cooling fan, internal fan
Main circuit smoothing capacitor
On-board smoothing capacitor
Relays
Gasket

Estimated lifespan for when the yearly average ambient temperature is 35°C.
(without corrosive gas, flammable gas, oil mist, dust and dirt etc.)

Output current: 80% of the inverter rating

The estimated lifespan is only a guide. To maintain the waterproof and dustproof performances of the inverter, daily and periodic inspections are
recommended.
NOTE
• For parts replacement, contact the nearest Mitsubishi FA center.
Displaying the life of the inverter parts
The inverter diagnoses the main circuit capacitor, control circuit capacitor, cooling fan, internal fan, and inrush current limit
circuit by itself and estimates their lives.
The self-diagnostic warning is output when the life span of each part is near its end. It gives an indication of replacement time.
The life warning output can be used as a guideline for life judgment.
Parts
Main circuit capacitor
Control circuit capacitor
Inrush current limit circuit
Cooling fan
NOTE
• Refer to the FR-A800 Instruction Manual (Detailed) to perform the life check of the inverter parts.
94
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Estimated lifespan
10 years
10 years
10 years
2 years

Judgment level
85% of the initial capacity
Estimated remaining life 10%
Estimated remaining life 10% (Power ON: 100,000 times left)
Less than 50% of the specified speed.


Replace the board (as required)

Description
Replace (as required)
Replace (as required)
As required
Replace (as required)

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