User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-N16
while the
Feedback channel
includes the value of feedback coming from the object
controlled. MultiCon uses data collected from these channels and the corresponding
Controller controls the object.
Fig. 7.116. Block diagram of the control loop of the object by MultiCon
Fig. 7.117. Block diagram of the
Controller
implemented in the device
Formula for
Controller
output:
The use of 8 independent Cnntrollers in conjunction with the Set point value and feedback
provides full possibilities limited only by available logical channels. It means, that the same
Controller (e.g. controller No. 3) assigned in several logical channels, with different input data:
Set point and Feedback channels it can be used to control several objects at the same time.
193
Controller
Logical channel
in
Controller mode
Built-in output
or
External output
Control
object
Feedback
channel
Set point
channel
Device
feedback
Set point Sp
Feedback g
n
High output limit
z
-1
z
-1
Mode:
Dead zone (dz)
Td
Offset
Low output limit
en=Sp-gn
-
+
-
+
+
+
1. PI
2. PD
3. PID
1.
2.
3.
1.
2.
r
n
x
n
y
n
d
n
s
n
R
n
P
-1
1/Ti
Sampling 0.1 s
Differentiated signal:
2. Feedback (measured)
1. Error (deviation)
-dz
+dz
r
n
=
P
⋅
[
x
n
1
I
⋅
x
n
s
n
−
1
integral component
D
⋅
x
n
−
y
n
−
1
differential component
]