Examples - Siemens SINAMICS S120 Function Manual

4.1.4

Examples

Dancer control
The objective here is to maintain a constant level in the container.
This is carried out by means of a variable-speed pump in conjunction with a sensor
for measuring the level.
The level is determined via an analog input (e.g. AI0 on the TB30) and sent to the
technology controller. The level setpoint is defined in a fixed setpoint. The resulting
controlled variable is used as the setpoint for the speed controller.
In this example, a Terminal Board 30 (TB30) is used.
Fig. 4-1
Ramp - -function
Xsetp
generator
Tec _ctrl
setpoint
p
2253
Xact
Actual
value
p
2264
Fig. 4-2 Filling level control: Controller structure
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
Filling level control application
+
Tec _ctrl type
+
p
2263
1
--1
0
Extended functions
Technology Controller function module
Sensor
X
act
Tec _ctrl Kp Tec _ctrl Tn
p p
2280 2285
+
+
d
dt
n_ 1
setp
p
1155
4-165