Mitsubishi Electric FR-A800, Инструкция по эксплуатации

Страница: 409 / 1042

Parameters (E) Environment setting parameters
FR-A800 5 - 229
5.7.20 Current average value monitor signal
The output current average value during constant-speed operation and the maintenance timer value
are output to the current average value monitor signal (Y93) as a pulse. The output pulse width can be
used in a device such as the I/O unit of a programmable controller as a guideline for the maintenance
time for mechanical wear, belt stretching, or deterioration of devices with age.
The pulse is repeatedly output during constant-speed operation in cycles of 20 s to the Current av-
erage monitor signal (Y93).
Initial value for the FR-A820-03160(55K) or lower and FR-A840-01800(55K) or lower.
Initial value for the FR-A820-03800(75K) or higher and FR-A840-02160(75K) and higher.
I002551E
Fig. 5-80: Monitoring the maintenance timer and current average value
Pr. Name
Initial
value
Setting range Description
555
E720
Current average time 1 s 0.1 to 1 s
Set the time for calculating the
average current during start pulse
output (1 s).
556
E721
Data output mask time 0 s 0 to 20 s
Set the time for not obtaining
(masking) transitional state data.
557
E722
Current average value
monitor signal output
reference current Rated
inverter
current
0 to 500 A Set the reference (100%) for
outputting the output current
average value signal.
0 to 3600 A
Maintenance
time
Parts have
reached their life
Input unit Output unit
Inverter
Programmable controller