18
Installation
Type 8692, 8693
→
Make the pneumatic connection between the positioner /
process controller and actuator with the “Tab. 4: Pneumatic con-
nection to actuator”.
noTe!
damage or malfunction due to ingress of dirt and moisture!
• To observe protection class IP65 / IP67 connect the pilot air
outlet which is not required to the free pilot air port of the actua-
tor or seal with a plug.
“In rest position” means that the pilot valves of the positioner
/ process controller are isolated or not actuated.
If the ambient air is humid, a hose can be connected between
pilot air outlet 2
2
of the positioner and the unconnected pilot air
port of the actuator for control function A or control function B.
As a result, the spring chamber of the actuator is supplied with
dry air from the vent duct of the positioner / process controller.
control function
pneumatic connection type 8692, type
8693 with actuator
pilot air
outlet type
8692, 8693
pilot air port actuator
a
Process valve
closed in rest
position (by
spring force)
2
1
lower pilot air port of the
actuator
2
2
should be connected to the
upper pilot air port of the
actuator
B
Process valve
open in rest
position (by
spring force)
2
1
upper pilot air port of the
actuator
2
2
should be connected to the
lower pilot air port of the
actuator
i
Process valve
closed in rest
position
2
1
lower pilot air port of the
actuator
2
2
upper pilot air port of the
actuator
Process valve
open in rest
position
2
1
upper pilot air port of the
actuator
2
2
lower pilot air port of the
actuator
Tab. 4: Pneumatic connection to actuator
english
Summary of Contents for 8692
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