Current Average Value Monitor Signal (Pr. 555 To Pr. 557) - Mitsubishi Electric FR-A700 Instruction Manual

Useful functions
6.25.4

Current average value monitor signal (Pr. 555 to Pr. 557)

The average value of the output current during constant speed operation and the maintenance
timer value are output as a pulse to the current average value monitor signal (Y93). The pulse
width output to the I/O module of the PLC or the like can be used as a guideline due to abrasion
of machines and elongation of belt and for aged deterioration of devices to know the mainte-
nance time.
The current average value monitor signal (Y93) is output as pulse for 20s as 1 cycle and repeat-
edly output during constant speed operation.
Fig. 6-267: Monitoring the maintenance timer and current average value
Pr. No. Name
555
Current average time
556
Data output mask time
Current average value
557
monitor signal output
reference current
The above parameters allow its setting to be changed during operation in any operation mode
even if "0" (initial value) is set in Pr. 77 "Parameter write selection".
6 - 532
PLC
Maintenance
time
Parts have
reached their life!
Initial Setting
Value Range
1s 0.1–1.0s
0s 0.0–20.0s
01800
0–500A
or less
Rated
inverter
02160
current
or 0–3600A
more
Output unit Input unit
Description
Set the time taken to average
the current during start bit out-
put (1s).
Set the time for not obtaining
(mask) transient state data.
Set the reference (100%) for
outputting the signal of the cur-
rent average value.
Parameter
Inverter
Parameters referred to
190–196 Output terminal
function selection
503 Maintenance timer
57 Restart coasting
time
I001264E
Refer to
Section
6.14.5
6.25.3
6.16.1