Mitsubishi Electric FR-F800, Instruction Manual

Page: 766 / 834

Inspection item Precautions for maintenance and inspection
7 - 6
Displaying the life of the inverter parts
The inverter diagnoses the main circuit capacitor, control circuit capacitor, cooling 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 indi-
cation of replacement time.
The life warning output can be used as a guideline for life judgment.
Initial values differ according to the inverter capacity (refer to page 5-91 for details).
Parts Judgment level
Main circuit capacitor 85% of the initial capacity
Control circuit capacitor Estimated remaining life 10%
Inrush current limit circuit Estimated remaining life 10% (Power ON: 100,000 times left)
Cooling fan
Less than 50% of the specified speed.
Tab. 7-4: Guideline for the warning signal output
NOTE Refer to page 5-88 to perform the life check of the inverter parts.