Mitsubishi Electric FR-A700 Technical Manual page 82

1.4.23 Current average value monitor signal (Y93)
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
programmable controller 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
maintenance time.
The current average value monitor signal (Y93) is output
as pulse for 20s as 1 cycle and repeatedly output during
constant speed operation.
[Pr. ] Name
555 Current average time
556 Data output mask time
Current average value monitor
557
signal output reference current
1) Data output mask time
When the speed has changed to constant
from acceleration/deceleration, Y93 signal is
not output for [Pr. 556] time.
2) Start pulse
Output as Hi pulse shape for 1s (fixed)
Output current set in [Pr. 555] time is averaged.
3) Output current average value pulse
The averaged current value is output as low pulse shape for
0.5 to 9s (10 to 180%) during start bit output.
Signal output time=
Initial
Setting Range
Value
1s
0s
Rated 55K or less
inverter
75K or more
current
Output
From acceleration to constant speed operation
frequency
Y93 signal
output current average value (A)
5s
[Pr. 557] (A)
The output pulse of Y93 signal
common
(common)
Programmable
controller
maintenance
time
parts have
reached their life
Set the time taken to average the current during
0.1 to 1.0s
start pulse output (1s).
Set the time for not obtaining (mask) transient
0.0 to 20.0s
state data.
0 to 500A
Set the reference (100%) for outputting the signal
0 to 3600A of the current average value.
1 cycle (20s) Next cycle
5) End pulse
output as low pulse
shape for 1 to 16.5s
4) Maintenance timer pulse
The maintenance timer value ([Pr. 503]) is output
as Hi output pulse shape for 2 to 9s (16000h to
72000h).
[Pr. 503]
Signal output time=
40000h
75
SPECIFICATIONS
Output Input
unit unit
Description
Time
100h
5s
Inverter
1