
4-122
10-03
PID control mode Default: 0000b
Range
【
xxx0b
】
: PID disable
【
xxx1b
】
: PID enable
【
xx0xb
】
: PID positive characteristic
【
xx1xb
】
: PID negative characteristic
【
x0xxb
】
: PID error value of D control
【
x1xxb
】
: PID feedback value of D control
【
0xxxb
】
: PID output
【
1xxxb
】
: PID Frequency Command
(a) Basic PID control: (10-03 = 0001b, 0011b)
This is the basic type of PID control. Refer to the figure below.
P
I
D
Control
+
+
+
+
-
Feedback
Set Value
Error signal (target minus feedback) is derivative controlled and set by parameter 10-07.
(b) PID control with differential feedback: (10-03 = 0010b, 0100b)
P
I
Control
D
+
-
+
+
+
+
Feedback
Set Value
10-26
10-27
PID target
SFS
ON
PID setting point
Target
Value
10-01=3
PID feedback
PID feedback display
unit conversion
Feedback
Value
Keypad display: 10-00=0
Analog Input 1: 10-00=1
Analog Input 2: 10-00=2
Communication: 10-00=3
PID Target Value (10-02): 10-00=4
Keypad display: 10-01=0
Analog Input 1: 10-01=1
Analog Input 2: 10-01=2
Communication: 10-01=3
10-00 ≠ 10-01
Parameter 10-01 sets the PID feedback value source. This value is what the PID function will use to determine
needed output.