Mitsubishi Electric FR-D720S SC EC Instruction Manual page 398

Special operation
I/O signals and parameter setting
Set "20 or 21" in Pr. 128 to perform PID operation.
Set "14" in any of Pr. 178 to Pr. 182 to assign PID control selection signal (X14) to turn the
X14 signal on. When the X14 signal is not assigned, only the Pr. 128 setting makes PID
control valid.
Enter the set point using the inverter terminal 2 or Pr. 133 and enter the measured value to
terminal 4.
NOTES
When Pr. 128 = "0" or X14 signal is off, normal inverter operation is performed without PID
action.
Turning ON/OFF of bit of the terminal, to which X14 signal is assigned through network as
RS485 communication, enables PID control.
Signal
X14
PU
Tab. 6-88: I/O signals and parameter settings (1)
6 - 248
Terminal
Function
used
Depending PID control
on
selection
Pr. 178–182
Set point input Enter the set point for PID
2 2
Set point input Set the set value (Pr. 133) from
—
Measured
value input
4 4
Description
Turn on X14 to perform PID
control.
control .
0–5V..........0–100%
0–10V........0–100%
the operation panel.
Input the signal from the detector
(measured value signal).
4–20mA.....0–100%
0–5V..........0–100%
0–10V........0–100%
Parameter
Parameter Setting
Set "14" to any of
Pr. 178 to Pr. 182.
Pr. 128 = 20, 21; Pr. 133 = 9999
Pr. 73 = 1 , 11
Pr. 73 = 0, 10
Pr. 128 = 20, 21;
Pr. 133 = 0–100%
Pr. 128 = 20, 21
Pr. 267 = 0
Pr. 267 = 1
Pr. 267 = 2