Maintenance Timer Alarm - Mitsubishi Electric 800 Series Instruction Manual (Function

9.17

Maintenance timer alarm

The Maintenance timer (Y95) signal is output when the inverter's cumulative energization time reaches the time period set with
the parameter. "MT" is displayed on the operation panel. This can be used as a guideline for the maintenance time of peripheral
devices.
Pr. Name
503
Maintenance timer
E710
504 Maintenance timer warning
E711 output set time
First power
9998
(999800h)
Maintenance
timer
Pr.504
(Pr. 503)
Y95 signal
MT display
• The cumulative energization time of the inverter is stored in the EEPROM every hour and displayed in Pr.503 in 100 h
increments. The number indication on Pr.503 stopped at 9998 (999,800 hours).
• When the value in Pr.503 reaches the time (100 h increments) set in Pr.504, the Maintenance timer (Y95) signal is output,
and also "MT" is displayed on the operation panel.
• For the terminal used for the Y95 signal output, assign the function by setting "95" (positive logic) or "195" (negative logic)
in any parameter from Pr.190 to Pr.196 (Output terminal function selection).
NOTE
• The cumulative energization time is counted every hour. Energization time of less than 1 h is not counted.
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.190 to Pr.196 (Output terminal function
Initial value Setting range
0 0 (1 to 9998)
0 to 9998
9999
9999
ON
Set "0" in Pr.503
OFF ON ON
Operation example of the maintenance timer
selection)page 332
Description
Displays the inverter's cumulative energization time in
increments of 100 hours (read-only). Writing the setting of "0"
clears the cumulative energization time while Pr.503 = "1 to
9998". (Writing is disabled when Pr.503 = "0".)
Set the cumulative energization time in 100 hours which
triggers the Maintenance timer (Y95) signal output.
Without the function
Time
9. (E) Environment Setting Parameters
9.17 Maintenance timer alarm
1
2
3
4
5
6
7
8
9
10
227