Instruction manual

Instruction manual αlpha DO 2000
40
11.4 Appendix 4 – General instructions concerning Controller Setting
11.4.1 Control characteristic of Controllers used as limit value switch
Xp = 0
Xp = 0
0%
50%
100% Yh
-Xw
+Xw
SP 2SP 1
MIN function MAX function
11.4.2 Control characteristic of P-Controllers as proportional controller
Xp
0%
50%
100% Yh
-Xw
+Xw
Xp
Prop. band Prop. band
SP
2
SP 1
MIN function MAX function
11.4.3 Control characteristic of PI-Controllers as proportional integral controller
SP1 SP 2
10%
Proportional. band
X
P
Prop. band
X
P
20%
25%
100%
50%