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Description
3.1
Application
Overview
The intelligent electropneumatic positioner is used, for example, in the following industries:
● Chemical
● Oil and gas
● Energy production
● Food and beverage
● Pulp and paper
● Water, waste water
● Pharmaceutical
● Mining and aggregates
The positioner is used for the continuous control of valves with single- or double-acting
pneumatic actuators. The positioner can be installed on a wide range of linear and part-turn
actuators.
Setpoints and electrical power supply for the positioner are fed through a 4 to 20 mA setpoint
signal. As an option, HART communication and an alarm module with digital inputs and
outputs are also available. Also available as an option is a module for position feedback,
which outputs the valve position using a 4 to 20 mA signal.
Device versions
Positioners can be supplied:
● For single and double-acting actuators
● For non-hazardous applications
● For use as an intrinsically-safe device Ex ia or Ex n
● With and without HART communication through the 4 to 20 mA control pulse
SIL
As an option, the SITRANS VP300 is available as a SIL device. In that case, the following
applies:
For use in a safety-instrumented system (SIS), the safe shutdown function is designed with
SIL 2. On request using digital input DI 3 or in the case of failure of the electrical or
pneumatic supply, ventilation is carried with actuating pressure Y1. A connected single-
acting actuator moves the valve into the safe final position.
SITRANS VP300 with or without HART
Operating Instructions, 03/2011, A5E01258666-03
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