254
Useful functions
4.21.3 Maintenance timer alarm (Pr. 503, Pr. 504)
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.
Parameter
Number
Name
Initial Value
Setting Range
Description
503
Maintenance timer
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.
504
Maintenance timer alarm output
set 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 173.)
CAUTION
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.
Please make setting after confirming the function of each terminal.
i
Parameters referred to
i
Pr. 190 to Pr. 196(output terminal function selection)
Refer to page 116
First power
ON
Maintenance
timer
(
Pr. 503
)
Set "0" in
Pr.503
Y95 signal
MT display
OFF
ON
Time
ON
Pr.504
9998
(999800h)
Summary of Contents for F700
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