Справочник Пользователя для Mitsubishi Electronics FR-F740P

⋅ The cumulative energization time of the inverter is stored into the EEPROM every hour and indicated in Pr. 503

Maintenance timer in 100h increments. Pr. 503 is clamped at 9998 (999800h).

⋅ When the Pr. 503 value reaches the time set in Pr. 504 Maintenance timer alarm output set time (100h increments), the

maintenance timer alarm output signal (Y95) is output.

⋅ For the terminal used for the Y95 signal output, assign the function by setting "95" (positive logic) or "195" (negative

logic) in any of Pr. 190 to Pr. 196 (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 (FR-DU07).

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

Set the 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 User group read selection = "0". (Refer to page 201.)

⋅ 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 to Pr. 196 (output terminal function selection) may affect the other functions. Set

parameters after confirming the function of each terminal.

♦ Parameters referred to ♦

First power

ON

Maintenance
timer
(

Pr. 503)

Set "0" in 

Pr.503 

Y95 signal
MT display

OFF

ON

Time

ON

9998

(999800h)