111
B. Supplementary on PID Control Block Diagram
A PID control block diagram is
Frequency
Command
Primary
Delay
PID
Target
Feedback
signal
Bn-16
Fig. 48 PID control block diagram
Note : 1. A target signal may come from digital operator, PS-485 port or multi-
function analog input terminal-AUX setting. (upon Sn-05 setting).
2. The detected signal can be input either from terminal VIN (Sn-24=0,
voltage command 0~10V) or from terminal AIN (Sn-24=1, current
command 4~20mA).
3. If the target signal is from the terminal AUX, please use the wiring as
below: (Sn-05=01, Sn-29=09)
0 ~ +10V
4 ~ 20 mA
0 ~ +10V
GND
+15V
AIN Ref. Com. (Sn-24=1)
VIN Ref. Com. (Sn-24=0)
AUX (Sn-29 = 09 for PID target)
(PID feedback)
Fig. 49 PID wiring diagram
4. Please refer to page 42, 43 for more details about PID use.
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