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10 Pneumatic connections
10.1 Control function
The following control functions are available:
Control function 1
Normally closed (NC):
Valve resting position: closed by spring force. Activation of
the actuator (connector 2) opens the valve. When the actuator
is vented, the valve is closed by spring force.
Control function 2
Normally open (NO):
Valve resting position: opened by spring force. Activation of
the actuator (connector 4) closes the valve. When the actu-
ator is vented, the valve is opened by spring force.
Control function 3
Double acting (DA):
Valve resting position: no defined normal position. The valve
is opened and closed by activating the respective control me-
dium connectors (connector 2: open/connector 4: close).
Connector 4
Connector 2
Actuator size 2
control function 2 + 3
Control function
1 (NC)
+
2 (NO)
-
3 (DA)
+
+ = available / - = not available
(see figure for connectors 2 / 4)
www.gemu-group.com
Connectors
2
4
-
+
+
10.2 Connecting the control medium
1. Use suitable connectors.
2. Connect the control medium lines tension-free and
without any bends or knots.
Thread size of the control medium connectors:
Diaphragm size 25: G1/4
Control function
1
Normally closed (NC)
2
Normally open (NO)
3
Double acting (DA)
For connectors 2 / 4 see figure on the left
10.3 Operation
Optical position indicator
Valve open
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10 Pneumatic connections
Connectors
2: Control medium (open)
4: Control medium
(close)
2: Control medium (open)
4: Control medium
(close)
Valve closed
GEMÜ P600S
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