1. Summary of components
1-8
Festo P.BE-SPC11-SYS-ASI -EN en 0203NH
1 Measuring system
2 Actual position
value
3 SPC11
4 Valve control
(nominal value)
5 Proportional
directional
control valve
6 Drive, e.g. linear
drive
123
45
6
Fig. 1/2: Positioning control circuit with pneumatic components
The measuring system registers continuously the position of
the mo veable mass and transmits this in the form of an elec-
tric signal to the SPC11. The SPC11 compares the current
position with the target position (t he taught end positions
P.01 and P.02 of the intermediate posi tions P.03 and P.04) and
calculates from this value the positioning signal for the pro-
portional directional control valve.
The proportional directional c ontrol valve controls the drive
by pressurizing one cylinder chamber and exhausting the
other. The flow is blocked in the valve slide mid-position.
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