Siemens SIPART DR19 - Control Structures

SIPART DR19
86 C73000-B7474-C140-06
Block Diagram Quick Reference
4.2 Control Structures
S2=0, 1, 2, 3
S2 = 0 Continunous-action controller (K)
S2 = 1 Two-step controller
S2 = 2 Three-step controller internal feedback
S2 = 3 Three-step controller external feedback
w
xd
0, 1
U
I
S55 = 0
I
y/DO
y
y000
S57
I
P
0/4 ... 20 mA
8, 9
10,11
U
I
y
I
P
0/4 ... 20 mA
y000
Y2
Y1
y000
12, 13
=
tP
=
tM
Heating
Cooling
S57
S55 = 0
S55 = 2
y
2
y1
-Dy
+Dy
Y
2
Y1
y
-Dy
+Dy
tP, tM
S55 = 1
-
Dy
+Dy
y000
-
+
tA, tE
M
y
y
R
Ty
E
a
S55 = 1
-Dy
+Dy
y000
-
+
tA, tE
M
y
y
R
Ty
E
a
tP, tM