Smart Positioner
SP740 Series
4. Connection - Air
4.1 Supply Pressure Conditions
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Make sure that air filter regulator should be installed on the front of positioner.
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Supplying air should not be mixed with oil, moisture or impurities.
Filter regulator pressure should be set 10& higher than actuator operation pressure or spring
operation pressure.
4.2 Connection - Piping with actuator
4.2.1 Single acting actuator
A single positioner should use OUT1 port only.
Therefore, in case of using a single acting spring return actuator, make sure to connect a positioner's
OUT1 port and actuator's supply pressure port.
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Fig: 4-1 Single acting linear actuator Fig:4-2 Single acting rotary actuator
4.2.2 Double acting Actuator
Double acting positioner uses both OUT1 and OUT2 ports.
If electric input siginal shall be increased , air pressure is suppliedd from OUT1 port .
so pleas install piping after checking this point,
Fig: 4-3
Double acting linear actuator Fig 4-4 Double acting rotary actuator
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