Mitsubishi Electric FR-A700 Instruction Manual page 678

Special operation
PID monitor function
The PID control set value, meaured value and deviation value can be output to the operation
panel monitor display and terminal CA, AM.
The deviation monitor can display a negative value on the assumption that 1000 is 0%. (The
deviation monitor cannot be output from the terminal CA, AM.)
For the monitors, set the following values to Pr. 52 "DU/PU main display data selection", Pr. 54
"CA terminal function selection", and Pr. 158 "AM terminal function selection".
Parameter Monitor Description
52
53
54
Tab. 6-170: PID monitor function
Adjustment procedure
Parameter setting
Terminal setting
6 - 498
PID set point
PID measurement
value
PID deviation value
Adjust the PID control
parameters Pr. 127 to Pr. 134
and Pr. 575 to Pr. 577
Set the I/O terminals for PID
control. (Pr. 178 to Pr. 189
and Pr. 190 to Pr. 196
Turn on the
X14 signal
Operation
Minimum Terminal CA, AM Full
Increment Scale
0.1% 100%
0.1% 100%
0.1% —
Fig. 6-245:
Adjustment procedure
Parameter
Remarks
For using an external PID controller
(Pr. 128 = 10, 11), the monitor
value is always displayed as "0".
Value cannot be output from the
terminals AM and CA.
The PID deviation value of 0% is
displayed as 1000.