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SPECIFICATIONS
1.4.23 Current average value monitor signal (Y93)
(common)
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.
common
Programmable
controller
Output
unit
Input
unit
maintenance
time
parts have
reached their life
Inverter
[Pr. ]
Name
Initial
Value
Setting Range
Description
555
Current average time
1s
0.1 to 1.0s
Set the time taken to average the current during
start pulse output (1s).
556
Data output mask time
0s
0.0 to 20.0s
Set the time for not obtaining (mask) transient
state data.
557
Current average value monitor
signal output reference current
Rated
inverter
current
55K or less
0 to 500A
Set the reference (100%) for outputting the signal
of the current average value.
75K or more
0 to 3600A
The output pulse of Y93 signal
Y93 signal
1) Data output mask time
2) Start pulse
1 cycle (20s)
3) Output current average value pulse
Next cycle
Time
Output
frequency
From acceleration to constant speed operation
Signal output time=
output current average value (A)
[
Pr. 557
]
(A)
5s
4) Maintenance timer pulse
Signal output time=
5s
40000h
5) End pulse
The averaged current value is output as low pulse shape for
0.5 to 9s (10 to 180%) during start bit output.
When the speed has changed to constant
from acceleration/deceleration, Y93 signal is
not output for [
Pr. 556
] time.
[
Pr. 503
] 100h
output as low pulse
shape for 1 to 16.5s
The maintenance timer value ([
Pr. 503
]) is output
as Hi output pulse shape for 2 to 9s (16000h to
72000h).
Output as Hi pulse shape for 1s (fixed)
Output current set in [
Pr. 555
] time is averaged.
Summary of Contents for FR-A700 Series
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Page 522: ...556 SELECTION MEMO ...
