Pneumatic Positioner
YT-1200 series
Product Manual
Ver. 1.18
35
5.4.2
Double acting actuator
Double acting type positioner is set to use both Out1 and Out2 port. As input signal increases, the
supply pressure will be supplied through Out1 of positioner to actuator and the exhausting air from
actuator will be exhausted through Out2 of positioner.
Fig. 5-6: Double acting linear actuator
Fig. 5-7: Double acting rotary actuator
Refer to below diagram and check if the valve is a “Reverse Acting” or “Direct Acting”. Then connect
positioner’s OUT1 port to the proper actuator’s port and in case of need, switch the assembly position
of the Span (linear) and Cam (Rotary).
Fig. 5-8: Setting directions of piping and cam for linear double actuator
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