Design; Function - GF SPC Betriebsanleitung

Operating Instructions
3.2

Design

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3.3

Function

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The type SPC positioner is an electropneumatic positioner for pneumatically operated control valves with single-acting actuators.
The type SPC positioner is assembled on the pneumatic actuator and regulates the position of the valve.
The type SPC positioner continuously compares the current position (actual position value) with the specification of the external
standard signal (position setpoint value). If there is a control difference, the electropneumatic control system causes the actuator to
correct the actual position value accordingly.
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Type SPC positioner
Designation
Transparent cover
Below decoding module with status LEDs
Housing cover
Pressure limiting valve
Exhaust air connection
Lettering: 3
Type SPC*: Additional exhaust air connec-
tion
Lettering: 3.1
Control air connection
Lettering: 1
Electrical connection
Supply air filter
Designation
Valve
Pneumatic actuator
Type SPC Positioner
Control air connection
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