bürkert 1110 Bedienungsanleitung Seite 20

DIGITAL INDUSTRIAL CONTROLLER
Filter 1
Root extraction
1
PV1
Input 1
Linearisation
5
SP1
Ramp
6
13
COs
CO
14
10
Controller 2
SP2
22
20
Controller 1
Input 2
23
PV2
Filter 2 Root extraction
Figure 8: Structure of the feed forward control
Description of the functional blocks from Page 122
18 - 1110
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Scaling
2 3
4
7
Setpoint
limiting
Multiplier
11
CO2
Manipulated
Line of action
variable limiting
29
CO1
Manipulated
Line of action
variable limiting
25
24
ext.SP
off
Scaling
Alarm abs.
PV1
Alarm ratio
SP
27
Alarm rel.
Continuous
signal
2-point-
PWM signal
12
3-point-
PWM signal
3-point-
step signal
3-point-step
signal with
21
ext. p. a.
ratio
cascade
PDT1
Feed forward
Feed forward
control
8
Aabs
28
Averh
9
Arel
15
16
17
RA
18
19
Controller
output
26