Mitsubishi Electric FR-A800, Instruction Manual

Page: 706 / 1042

(A) Application parameters Parameters
5 - 526
Basic configuration of PID control
Pr. 128 = "10, 11" (deviation value signal input)
●
Pr. 128 = "20, 21" (measured value input)
1145
A643
Second PID deviation
limit
9999 0 to 100%, 9999
Refer to Pr. 553.
(Y205 signal is
output.)
Set the second PID control.
For how to enable the second
PID control, refer to page 5-551.
1146
A644
Second PID signal
operation selection
0 0 to 3, 10 to 13 Refer to Pr. 554.
1147
A661
Second output
interruption detection
time
1 s 0 to 3600 s, 9999 Refer to Pr. 575.
1148
A662
Second output
interruption detection
level
0 Hz 0 to 600 Hz Refer to Pr. 576.
1149
A663
Second output
interruption cancel level
1000% 900 to 1100% Refer to Pr. 577.
I001230E
Fig. 5-255: System configuration when Pr. 128 = 10, 11 (using an external (PID) controller)
I001231E
Fig. 5-256: System configuration when Pr. 128 = 20 or 21 (set/feedback value at the inverter)
Pr. Name
Initial
value
Setting range Description
[ [
Kp 1+ +Td S
1
Ti S
•
•
* Set "0" to Pr. 868 "Terminal 1 function assignment". When Pr. 868
≠
"0", PID control is invalid.
Set point
Deviation signal
Kp: Proportionality constant; Ti: Integral time; S: Operator; Td: Differential time
Motor
Manipulated
variable
Terminal 1 *
0 to
±
10 V DC
(0 to
±
5 V)
Feedback signal (measured value)
PID operation
Inverter circuit
To outside
[ [
Kp 1+
+Td S
1
Ti S
•
•
Note that the input of terminal 1 is added to the set point of terminal 2 as a set point.
Set "0" to Pr. 858 "Terminal 4 function assignment". When Pr. 858
≠
"0", PID control is invalid.
Set point
Kp: Proportionality constant; Ti: Integral time; S: Operator; Td: Differential time
Motor
Manipulated
variable
Terminal 4
Feedback signal (measured value)
PID operation
Inverter circuit
4 to 20 mA DC
(0 to 5 V, 0 to 10 V)
0 to 5 V DC
(0 to 10 V, 4 to 20 mA)
Pr. 133 or
terminal 2