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Parameter details
Life display of the inrush current limit circuit (Pr.32)
• The life of the inrush current limit circuit (relay, contactor, and inrush resistor) is displayed in Pr.32.
• The number of times the contacts of relay, contactor, and thyristor turn ON is counted down from 100% (0 time) by 1%
every 1000 times.
When the counter reaches 10% (90000 times), bit 3 of Pr.31 turns ON and the life alarm is output by the Y14 signal turned ON.
Life display of the control circuit capacitor (Pr.33)
• The deterioration degree (life) of the control circuit capacitor is displayed on Pr.33.
• The control circuit capacitor life calculated from the operating conditions (energization time and temperature) is counted
down from 100%.
When the counter reaches 10%, bit 0 of Pr.31 turns ON and the life alarm is output by the Y14 signal turned ON.
Life display of the cooling fan
• When the cooling fan speed of 50% or less is detected, the alarm indication "LA" is displayed on the operation status 7-
segment LED display of the multifunction regeneration converter. When the alarm indication is displayed, bit 2 of Pr.31
turns ON and the life alarm is output by the Y14 signal turned ON.
NOTE
• When the converter is mounted with two or more cooling fans, "LA" is displayed even only one of the fans is detected.
• For parts replacement, consult the nearest Mitsubishi FA Center.
3.5.8
Maintenance timer alarm (Pr.34 and Pr.35)
When the cumulative energization time of the multifunction regeneration converter reaches the parameter set time, the
Maintenance timer (Y15) signal is output. The warning indication "LE" is displayed on the operation status 7-segment
LED display of the multifunction regeneration converter.
This can be used as a guideline for the maintenance time of peripheral devices.
Pr.
34
Maintenance timer
Maintenance timer warning
35
output set time
• The cumulative energization time of the converter is recorded into the EEPROM every hour and indicated in 100 hours on
Pr.34 Maintenance timer. The number indication on Pr.34 stopped at 9998 (999,800 hours).
• When the Pr.34 value (the cumulative energization time in 100 hours) becomes equal to the setting value of Pr.35
Maintenance timer warning output set time, the Maintenance timer (Y15) signal is output.
• For the terminal used for Y15 signal, set "15 (positive logic)" or "115 (negative logic)" to any of Pr.11, Pr.12, and Pr.16
(Output terminal function selection).
NOTE
• The cumulative energization time is counted every hour. Energization time of less than 1 hour is not considered.
• Changing the terminal assignment using Pr.11, Pr.12, and Pr.16 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
92
PARAMETERS
Name
Initial value
0
9999
First power
9998
(999800 h)
Maintenance timer
(Pr.34)
Pr.35
OFF
Y15 signal
"LE"indication
Setting range
0 (1 to 9998)
0 to 9998
9999
ON
Set "0" in Pr.34.
ON
ON
Description
Displays the cumulative energization time
of the converter in 100 hours.
Read-only.
Writing the setting of "0" clears the
cumulative energization time.
Set the cumulative energization time in
100 hours which triggers the
Maintenance timer (Y15) signal output.
Function disabled.
Time
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