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10.4
Appendix 4 – Control actions
General Instructions Concerning Controller Setting
20%
Proportional. band
X
P
Control characteristic of PI-Controller as proportional integral controller
MIN Function
- Xw
Control characteristic of P-Controller as proportional controller
MIN Function
- Xw
Control characteristic of P-Controllers as limit value switch
100%
50%
25%
SP1
10%
Yh
100 %
50 %
0 %
Xp
Prop. Band
SP 1
Yh
100 %
50 %
0 %
SP 1
Xp = 0
SP 2
Prop. band
X
P
MAX Function
+ Xw
Xp
Prop. Band
SP 2
MAX Function
+ Xw
SP 2
Xp = 0
41
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