Festo MPS 2000, Руководство пользователя

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Programming
© Festo Didactic GmbH & Co. • MPS
49
In the following please find some important informations regarding pneumatic
actuators and their triggering. This informations are basically.
Instructor: In the following exercises, pneumatic working elements are used.
Therefore, a short introduction in these technological features are necessary.
Double-acting cylinders with the ability to work at forward- and backward
movement are pneumatic working elements, which are often used. These cylinders
are mostly triggered by 5/2-way valves. Explain the following three graphics.
•
5 = number of connections (1, 3, 4, 2 and 5)
•
2 = 2 switching positions (2 rectangles)
The connections have the following functions:
1(P) = air connection (supply)
2(B) = output B for backward stroke
3(S) = connection exhaust air of forward stroke
4(A) = output A for forward stroke
5(S) = connection exhaust air of backward stroke
In the following drawing you can find letters in brackets behind the standardized
designation of the connections (1, 3, 4, 2 and 5). These letters are former
designations, one can still find them on old elements.
3(R) 5(S)
1(P)
14
y1
4(A) 2(B)
y2 y3
3(R) 5(S)
1(P)
14 12
4(A) 2(B)
Single solenoid Double solenoid
Activation of single/double solenoid valve: