Operation; Control Functions; Connecting The Control Medium - Gemu 605 Installation, Operating And Maintenance Instructions

11.2 Operation

Optical position indicator
Valve open

11.3 Control functions

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 actuator is
vented, the valve is opened by spring force.
Control function 3
Double acting (DA):
Valve resting position: no defi ned normal
position. The valve is opened and closed
by activating the respective control medium
connectors (connector 2: open / connector 4:
close).
Valve closed
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Control function 1: connector 4 is closed with
a blanking plug.
Control function 2: connector 2 is closed with
a blanking plug.
Control
function
1 (NC)
2 (NO)
3 (DA)
+ = available / - = not available
(for connectors 2 / 4 see photo above)
11.4 Connecting the
control medium
Important:
Assemble the control medium lines
tension-free and without any bends
or knots! Use appropriate connectors
according to the application.
Thread size of the control medium connector:
G1/4
Always make sure you have used the
correct threads. Failure to do so could cause
the control media line to hit someone with
force (due to compressed control medium),
thereby causing death or serious injury.
Function of the actuator would be aff ected by
using incorrect thread size. Incorrect thread
size may change function of process line
[product quality] (or process media could
escape).
Connector 4
Connector 2
Connectors
2 4
+ -
- +
+ +
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