Introduction; General Information About The Positioner - Siemens PROFIBUS PA SIPART PS2 Manual

Introduction

1.1

General information about the positioner

Purpose
Versions
Housing
SIPART PS2 PA Manual
A5E00127926-03
The positioner is used to adjust and control pneumatic actuators. The
controller operates electropneumatically with compressed air as an
energy supply.
The positioner together with the PROFIBUS PA communications inter-
face are components in a digital process automation system. It commu-
nicates with the master as a slave via the PROFIBUS PS field bus. The
field bus is used not only for communication but also to supply the posi-
tioner with electrical power.
For example, the positioner can be used to control valves as follows:
with linear actuator (figure 1-1, page 15) or
S
with rotary actuator VDI/VDE 3845 (figure 1-2, page 15)
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Different mounting types are available for linear actuators:
NAMUR or IEC534
S
integrated mounting to ARCA
S
integrated mounting to SAMSON (non-explosion-proof version)
S
This means the positioner can be installed and operated on all common
actuator systems.
The positioner is available for the following actuators:
double-acting and
S
single-acting
S
For following applications:
potentially explosive or
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not potentially explosive applications.
S
The electronics with display, position feedback and valve block are inte-
grated in the housing.
Introduction
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