Mitsubishi Electric fr-e700 series, Instruction Manual

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Parameter Useful functions
FR-E700 SC EC/ENE 6 - 323
6.21.3 Maintenance timer alarm (Pr. 503, Pr. 504)
When the cumulative energizing time of the inverter reaches the parameter set time, the mainte-
nance 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.
The above parameters can be set when Pr. 160 "User group read selection" = 0.
The cumulative energizing time of the inverter is stored into the E²PROM every hour and indicated in
Pr. 503 "Maintenance timer" in 100 h increments. Pr. 503 is clamped at 9998 (999800 h).
When the Pr. 503 value reaches the time set to Pr. 504 "Maintenance timer alarm output set time" (100
h 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" (source logic) or
"195" (sink logic) to any of Pr. 190 to Pr. 192 "Output terminal function selection".
Pr. No. Name Initial Value
Setting
Range
Description Parameters referred to
Refer to
Section
503
Maintenance timer 0 0 (1–9998)
Display the cumulative energizing time of the
inverter in 100h increments.
Reading only
Writing the setting of "0" clears the cumulative
energizing time.
190–192 Output terminal
function selection
6.10.5
504
Maintenance timer alarm
output set time
9999
0–9998
Set the time taken until when the maintenance
timer alarm output signal (Y95) is output.
9999 No function
I001263E
Fig. 6-167: Maintenance timer
NOTES
The cumulative energizing time is counted every hour. The energizing time of less than 1h is not
counted.
When terminal assignment is changed using Pr. 190 to Pr. 192 "Output terminal function selec-
tion", the other functions may be affected. Please make setting after confirming the function of
each terminal.
First power
99998
(999800 h)
Maintenance timer
(Pr. 503)
Pr. 504
Y95 signal
("MT" display)
Set "0" in Pr. 503
OFF ON ON
ON
Time
OFF