Festo Контроллер крайних положений SPC11 - Manual (Page 43)

3. Installation
3-15
Festo P.BE-SPC11-SYS-EN en 1406e
3.2.1 Additional pneumatic circuits
You may require additional pneumatic circuits in order to
attain a particular status for the system in certain applica-
tions. Choose between the following alternatives based on
the design and operating characteristics of your system:
– drive pressureless
– drive clamped
– drive moves while throttled to the left or right end
position.
Please note
If the operating voltage supply for the SPC11 is switched
off, the proportional directional control valve type MPYE-...
will move to the mid-position. Due to the asymmetrical
voltage-pressure curve of the proportional directional con-
trol valve when the supply pressure is switched on, the
slide can move slowly into one of the end positions.
Circuit variants
The following four diagrams show as an example four variants
of circuits for a linear drive.
For requirements and recommendations concerning the
components used, see Fig. 3/11 and Fig. 3/12.