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31(80$7,& 02'8/( 31(80$7,& '(9,&(6 Chapter Issue 3 May 03 Technical Reference Manual 24.11 Manifold Sol enoid V alves T ype 5/2 A body mounted sol enoid valve, type 5/2 is f itted to the manif old…
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24.10 Technical Reference Manual Chapter Issue 3 May 03
Double Acting
Cylinders
The force exerted by the compressed air is required to move the piston in each
direction. A definite force is applied on both advance and return movements.
Figure 24-9 Double Acting Cylinder and Symbol
Double acting cylinders allow work to be performed in both directions. Air
entering at Port A acts against the valve plate (1) driving it backwards, retracting
the piston to which it is attached and exhausting air through Port B. To extend
the piston air enters Port B and the process repeats in the other direction.
Figure 24-10 Double Acting Cylinder Cross Section
Piston Extended
Piston Retracted
Symbol
1
Port
A
Port
B
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31(80$7,&'(9,&(6
Chapter Issue 3 May 03 Technical Reference Manual 24.11
Manifold Solenoid
Valves Type 5/2
A body mounted solenoid valve, type 5/2 is fitted to the manifold. This type of
solenoid is used with a double acting cylinder.
NOTE
Although the board stop is not a double acting cylinder, a type 5/2 solenoid is
used in this instance to be in place for the option of a remote board stop.
The solenoid controls the distribution of compressed air to a pneumatic cylinder
to provide mechanical work. The solenoid is activated by a 24V signal which is
identified by an illuminated red Led within the solenoid.
An orange manual override button allows the solenoid to be activated to test
correct operation.
Figure 24-11 Solenoid and Symbol
In the rest state, with the solenoid switched off, the plunger (armature) is held
out under spring pressure, connecting the ports as shown in Solenoid Cross
Section figure.
When the solenoid is switched on, the plunger is pulled upwards against the
spring. This causes the port connections to change as shown in figure.
Figure 24-12 Solenoid Cross Section
Symbol
3
2
4
1
5
Red LED
(inside solenoid unit)
Manual Override Button
3
3
1
1
5
5
4 (A)
4 (A)
2 (B)
2 (B)
+ 24V
0V
+ 24V
0V
31(80$7,&02'8/(
31(80$7,&'(9,&(6
24.12 Technical Reference Manual Chapter Issue 3 May 03
Manifold Solenoid
Valves Type 3/2
A body mounted solenoid valve, type 3/2 is fitted to the manifold. This type of
solenoid is used with a single acting cylinder.
The solenoid controls the distribution of compressed air to a pneumatic cylinder
to provide mechanical work. The solenoid is activated by a 24V signal which is
identified by an illuminated red Led within the solenoid.
An orange manual override button allows the solenoid to be activated to test
correct operation.
Figure 24-13 Solenoid and Symbol
In the rest state, with the solenoid switched off, the plunger (armature) is held
out under spring pressure, connecting the ports as shown in Solenoid Cross
Section figure.
When the solenoid is switched on, the plunger is pulled upwards against the
spring. This causes the port connections to change as shown in figure.
Figure 24-14 Solenoid Cross Section
Symbol
3
2
1
Red LED
(inside solenoid unit)
Manual Override Button
3
3
1
1
2 (B)
2 (B)
+ 24V
0V
+ 24V
0V