Display Of The Life Of The Inverter Parts - Mitsubishi Electric FR-A700 Instruction Manual

Inspection
8.1.4

Display of the life of the inverter parts

The self-diagnostic alarm is output when the life span of the control circuit capacitor, cooling fan,
each parts of the inrush current limit circuit is near to give an indication of replacement time. For
the life check of the main circuit capacitor, the alarm signal (Y90) will not be output if a measuring
method of is not performed. (Refer to the description below.)
The life alarm output can be used as a guideline for life judgement.
Parts
Main circuit capacitor
Control circuit capacitor
Inrush current limit circuit
Cooling fan
Tab. 8-2: Guideline for the alarm signal output
Display of the life alarm
Pr. 255 "Life alarm status display" can be used to confirm that the control circuit capacitor, main
circuit capacitor, cooling fan, and each parts of the inrush current limit circuit has reached the life
alarm output level.
Read the setting of parameter 255.
Fig. 8-1: Read parameter 255
When the life alarm output level is reached, the bits are set as follows.
Fig. 8-2: Bits of parameter 255
8 - 4
Judgement Level
85% of the initial capacity
Estimated 10% life remaining
Estimated 10% life remaining (Power on: 100,000 times left)
Less than 40% of the predetermined speed
Read the setting of Pr. 255
Call up Pr. 255
Control circuit capacitor life
Main circuit capacitor life
Cooling fan life
Inrush current limit circuit life
Maintenance and inspection
The bit image is displayed
in decimal.
I001262E
I001261E