Mitsubishi Electric FR-A700 EC, Instruction Manual

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Parameter Useful functions
FR-A700 EC 6 - 527
6.25.2 Display of the life of the inverter parts (Pr. 255 to Pr. 259)
Degrees of deterioration of main circuit capacitor, control circuit capacitor or inrush current limit
circuit and cooling fan can be diagnosed by monitor.
When any part has approached the end of its life, an alarm can be output by self diagnosis to pre-
vent a fault. (Use the life check of this function as a guideline since the life except the main circuit
capacitor is calculated theoretically.) For the life check of the main circuit capacitor, the alarm
signal (Y90) will not be output if a measuring method shown on page 6-529 is not performed.
Life alarm display and signal output (Y90 signal, Pr. 255)
Whether any of the control circuit capacitor, main circuit capacitor, cooling fan and inrush current
limit circuit has reached the life alarm output level or not can be checked by Pr. 255 "Life alarm
status display" and life alarm signal (Y90).
Read the setting of parameter 255.
When the life alarm output level is reached, the bits are set as follows.
Pr. No. Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
255
Life alarm status
display
0 (0–15)
Display whether the control circuit
capacitor, main circuit capacitor, cool-
ing fan, and each parts of the inrush
current limit circuit has reached the
life alarm output level or not.
Reading only
190–196 Output terminal
function selection 6.14.5
256
Inrush current
limit circuit life display
100% (0–100%)
Display the deterioration degree of the
inrush current limit circuit. Reading
only
257
Control circuit
capacitor life display
100% (0–100%)
Display the deterioration degree of the
control circuit capacitor. Reading only
258
Main circuit capacitor
life display
100% (0–100%)
Display the deterioration degree of the
main circuit capacitor. Reading only
The value measured by Pr. 259 is dis-
played.
259
Main circuit capacitor
life measuring
0
0/1
(2/3/8/9)
Setting "1" and switching the power
supply off starts the measurement of
the main circuit capacitor life (refer to
the following pages).
When the Pr. 259 value is "3" after
powering on again, the measuring is
completed. Read the deterioration
degree in Pr. 258.
I001262E
Fig. 6-264: Read parameter 255
I001261E
Fig. 6-265: Bits of parameter 255
Call up Pr. 255
Read the setting of Pr. 255
The bit image is displayed
in decimal.
Control circuit capacitor life
Main circuit capacitor life
Cooling fan life
Inrush current limit circuit life