Siemens SIPART DR20

Project Planning Manual SIPART DR20
Example 6: Three-setpoint mode with one follow-up controller where the following
variables can be used:
w1 is a remote setpoint wE
w2 is the safety setpoint wS fixed by parameterization
w3 is the local setpoint wi adjustable on the front
Switchover between w1 and w2 is carried out using the digital signal CB
(local / remote pushbutton 13 must be at "Remote"). Switching between
w1 / w2 on the one hand and the setpoint w3 is carried out using the
local / remote pushbutton 13. Fig. 11/6 shows the setpoint response with a
setpoint ramp Tw > 0, Fig. 11/7 shows the same example without a setpoint
ramp (Tw = 0).
S1 = 5
S10 = -1
S15 = 3
S17 = 0
S18 = 1
S19 = 1
100
0
w
1
w
2
w
3
w
1
INT
INT
INT
INT
CB
CB
t
w (%)
w
1
= w
E
w
2
= w
S
(parameter)
w
3
= w
i
(adjustable on front)
w
E
CB
CB
Fig. 11/6 Setpoint response according to example 6 with Tw > 0
100
0
w
1
w
2
w
3
w
1
INT
INT
INT
INT
CB
CB
t
w (%)
w
1
= w
E
w
2
= w
S
(parameter)
w
3
= w
i
(adjustable on front)
w
E
CB
CB
Fig. 11/7 Setpoint response according to example 6 with Tw = 0
106