Maintenance Timer Alarm (Pr. 503, Pr. 504) - Mitsubishi Electric 700 Series Instruction Manual

Useful functions
(5) Cooling fan life display
The cooling fan speed of 50% or less is detected, and "FN" is displayed on the operation panel. As an alarm display, Pr.
255 bit2 is turned ON.
REMARKS
When the inverter is mounted with two or more cooling fans, "FN" is displayed with one or more fans with speed of 50% or less.
NOTE
For replacement of each part, contact the nearest Mitsubishi FA center.

5.19.3 Maintenance timer alarm (Pr. 503, Pr. 504)

Maintenance timer signal (Y95) is output when the inverter's cumulative energization time reaches the time period set
by the parameter during FL remote communication.
This can be used as a guideline for the maintenance time for peripheral devices.
Parameter
Number
503 Maintenance timer
Maintenance timer alarm
504
output set time
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 167)
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
maintenance timer alarm output signal (Y95) is output.
NOTE
The cumulative energization time is counted every hour. The energization time of less than 1h is not counted.
180
Name Initial Value
First power
ON
9998
(999800h)
Set "0" in Pr. 503
Maintenance
timer
Pr. 504
(Pr. 503)
OFF
Y95 signal
MT display
(MT) is displayed on the operation panel.
Setting Range
0 0 (1 to 9998)
0 to 9998
9999
9999
ON ON
Maintenance timer alarm output set time
Description
Displays the cumulative energization time
of the inverter in 100h increments.
(Reading only)
Writing the setting of "0" clears the
cumulative energization time.
Time taken until when the maintenance
timer alarm output signal (Y95) is output.
No function
Time
(100h increments), the