Current Average Value Monitor Signal (Pr.555 To Pr.557) - Mitsubishi Electric F700 Instruction Manual

Useful functions

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

The average value of the output current during
Pr.551
page 151
constant speed operation and the maintenance
Pr.571
timer value are output as a pulse to the current
page 76
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
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.
Parameter
number
555 Current average time
556 Data output mask time
Current average value monitor signal
557
output reference current
The above parameters can be set when Pr. 160 User group read selection= "0". (Refer to page 140)
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.
* The setting depends on capacities. (01160 or less/01800 or more)
⋅ The
pulse output
current average value monitor
signal (Y93) is shown on the
right.
⋅ For the terminal used for the
Y93 signal output, assign the
function by setting "93"
(positive logic) or "193"
(negative logic) to any of Pr.
190 to Pr. 194 (output terminal
function selection). (The
function can not be assigned
to Pr. 195 ABC1 terminal
function selection and Pr. 196
ABC2 terminal function
selection.)
⋅ Setting of Pr. 556 Data output mask time
The output current is unstable (transient state) right after the operation is changed from the acceleration/
deceleration state to the constant speed operation. Set the time for not obtaining (mask) transient state data in Pr.
556.
⋅ Setting of the Pr. 555 Current average time
The average output current is calculated during Hi output of start bit (1s). Set the time taken to average the
current during start bit output in Pr. 555.
214
Name
of the
Y93 signal
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)
Time and output current set in Pr.555 are 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.
output current average value (A)
Signal output time=
PLC
maintenance
time
parts have
reached their life
Initial value Setting range
1s 0.1 to 1.0s
0s 0.0 to 20.0s
Rated
0 to 500/0 to
inverter
3600A*
current
From acceleration to constant speed operation
Output
frequency
5s
Pr.557 (A)
output input
unit unit
Inverter
Description
Set the time taken to average the
current during start bit output (1s).
Set the time for not obtaining
(mask) transient state data.
Set the reference (100%) for
outputting the signal 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 1000h
Signal output time=
40000h
5s