Seg SP740 Series - Air Connection Setup; Supply Pressure Conditions; Piping with Actuators

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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.

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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.

Caution

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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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