Справочник Пользователя для Mitsubishi Electronics FR-D740-012

The cumulative energization time of the inverter is stored into the EEPROM every hour and is displayed in Pr. 503
Maintenance timer  in 100h increments. Pr. 503 is clamped at 9998 (999800h).
When the Pr. 503 value reaches the time set to Pr. 504 

  (100h increments), the

maintenance timer alarm output signal (Y95) is output.
For the termial used for the Y95 signal output, assign the function by setting "95" (positive logic) or "195" (negative logic) to
Pr. 190 or Pr. 192 (output terminal function selection).

When the cumulative energization time of the inverter reaches the parameter set time, the maintenance timer output

signal (Y95) is output. 

(MT) is displayed on the operation panel.

This can be used as a guideline for the maintenance time of peripheral devices.

0

0 (1 to 9998)

Displays the cumulative energization time 
of the inverter in 100h increments.
(Reading only)
Writing the setting of "0" clears the 
cumulative energization time.

9999

0 to 9998

Time taken until when the maintenance 
timer alarm output signal (Y95) is output.

9999

No function

The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 162)

NOTE

The cumulative energization time is counted every hour. The energization time of less than 1h is not counted.
Changing the terminal assignment using Pr. 190, Pr. 192 (output terminal function selection) may affect the other functions.
Make setting after confirming the function of each terminal.

Parameters referred to

First power

Time

ON

Maintenance
timer
(

Pr. 503)

Set "0" in 

Y95 signal 

MT display

OFF

ON

ON

9998

(999800h)