Electro-Pneumatic Positioner SP 520 Series
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Ver 1.20
32
SHIN HWA Eng.Co.,Ltd.
4. Air Pipe Connection
4-1. Air Pressure Condition
CAUTION
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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
actuator spring operation pressure.
4-2 Connection-Piping with actuator
4-2-1 Single Acting actuator
Single acting positioner should use OUT 1 port only.
Therefore, in case of using a single type spring return actuator, make sure to connect
positioner's OUT1 port and actuator's supply pressure port.
4-2-2 Double Acting actuator
Double acting positioner uses both OUT1 and OUT2 ports.
If electric input signal shall be increased, air pressure is supplied from OUT1 port.
So after checking this point, please note this when installing pipe.
Fig 4-1 : Single Acting Linear Actuator Fig 4-2 : Single Acting Rotary Actuator
