Pneumatic Connection; Control Functions; Connecting The Control Medium; Optical Position Indicator - Gemü R471 Tugela Betriebsanleitung

11 Pneumatic connection

11 Pneumatic connection

11.1 Control functions

The following control functions are available:
Control function 1
Normally closed (NC)
Butterfly valve resting position: closed by spring force. Activa-
tion of the actuator (connector 2) opens the butterfly valve.
When the actuator is vented, the butterfly valve is closed by
spring force.
Control function 2
Normally open (NO)
Butterfly valve resting position: opened by spring force. Activ-
ation of the actuator (connector 4) closes the butterfly valve.
When the actuator is vented, the butterfly valve is opened by
spring force.
Control function 3
Double acting (DA)
Butterfly valve resting position: undefined. The butterfly valve
is opened and closed by activating the respective control me-
dium connectors (connector 2: open / connector 4: close).
Control function
1 (NC) +
2 (NO) -
3 (DA) +
+ = available / - = not available
(for connectors 2 / 4 see picture in chapter Connecting the
control medium)
GEMÜ R471 Tugela
Connectors
2 4
-
+
+

11.2 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: G1/4
1
3. Remove the protection cap 1.
4. Screw the control medium line 3 into control medium con-
nector 2.
5. If appropriate, screw the second control medium line into
control medium connector 4.
Control function
1 Normally closed (NC)
2 Normally open (NO)
3 Double acting (DA)
For connectors 2 / 4 see picture above

11.3 Optical position indicator

Open
52 / 64
2 4
Connectors
2: Control medium (open)
4: Control medium (close)
2: Control medium (open)
4: Control medium (close)
Closed
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