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12 Pneumatic connection
1. Establish a connection between pneumatic positioner out-
let 2 (single acting) or connector 4 (double acting) and the
pneumatic control air inlet (control air inlets) of the actu-
ator.
2. Connect the auxiliary power (supply air) to air supply con-
nection 1 (max. 7 bar or 101 psi).
Single acting Double acting
Key
= Supply air (compressed air)/
working connection 2
= Exhaust air
working connection 2
= Supply air (compressed air)/
working connection 4
= Exhaust air
working connection 4
In order to regulate the flow rate and thereby the speed,
throttle screws (V1 and V2 single acting, V3 and V4 double
acting) are installed at the rear. See chapter "Setting the
throttle screws" for further information.
The connections to be used are fitted with push-in fittings for
tubes (outside diameter 6 mm) at the factory.
12.1 Connection diagram for linear actuators
12.1.1 Connection diagram for NC valves (Normally Closed)
● Fit tubing from 2 to the lower connection of the process
valve.
12.1.2 Connection diagram for NO valves (Normally Open)
● Fit tubing from 2 to the upper connection of the process
valve.
12.1.3 Connection diagram for double acting valves
● Fit tubing from 2 to the lower connection of the process
valve and 4 to the upper connection of the process valve.
12.2 Connection diagram for quarter turn actuators
12.2.1 Connection diagram for NC/NO valves (Normally
Closed/Normally Open)
NOTICE
▶ The control function can be adjusted via the butterfly disc
or by turning the shaft.
● Fit tubing from 2 to connector 2 of the quarter turn actu-
ator.
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