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Maintenance Timer Alarm (pr. 503, Pr. 504) - Mitsubishi Electric FR-D720-008 Instruction Manual

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

When the cumulative energization time of the inverter reaches the parameter set time, the maintenance timer output
signal (Y95) is output.
This can be used as a guideline for the maintenance time of peripheral devices.
Parameter
Name
Number
503
Maintenance timer
Maintenance timer alarm
504
output set time
The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 160)
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.
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).
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
Pr. 190, Pr. 192 (output terminal function selection)
(MT) is displayed on the operation panel.
Initial Value
0
9999
First power
ON
9998
(999800h)
Set "0" in Pr. 503
Maintenance
timer
Pr. 504
(Pr. 503)
OFF
ON
Y95 signal
MT display
Refer to page 117
Setting Range
Displays the cumulative energization time
of the inverter in 100h increments.
0 (1 to 9998)
(Reading only)
Writing the setting of "0" clears the
cumulative energization time.
Time taken until when the maintenance
0 to 9998
timer alarm output signal (Y95) is output.
9999
No function
Time
ON
Maintenance timer alarm output set time
Useful functions
Description
(100h increments), the
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