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Electropneumatic positioners Electric actuators
Siemens FI 01 · 2007, US Edition
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Product overview
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Electropneumatic positioners
SIPART PS2
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SIPART PS2, PS2 PA, PS2 FF, PS2 EEx d,
PS2 EEx d PA and PS2 EEx d FF
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Electric actuators SIPOS 5 Flash
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Technical Description
Rotary actuators
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- standard version
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- modulating duty
Linear actuators
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- modulating duty
Part-turn actuators
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- standard version
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- modulating duty
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Small part-turn actuators
- standard version and modulating duty
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Additional features
Software
Sec. 9
SIMATIC PDM, for parameterize
HART and PROFIBUS PA devices
You can download all instructions, cata-
logs and certificates for SIPART PS2 and
SIPOS free of charge at the following In-
ternet address:
www.siemens.com/sipartps2
www.sipos.de
Electropneumatic
positioners
Electric actuators Electropneumatic positioners / Electric actuators
Product overview
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Siemens FI 01 · 2007, US Edition
6 Overview
Application
Device description
Catalog
page
Software for
parameterization
Electropneumatic positioners SIPART PS2
Position control
Pneumatic linear or part-
turn actuators, also for
intrinsically-safe opera-
tion
SIPART PS2
Universal device for positioning pneumatic actuators
Connection: 4 to 20 mA
HART, PROFIBUS PA or Foundation Fieldbus
Local manual operation
Binary inputs and outputs
Diagnosis functions
Blocking function
Automatic startup
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SIMATIC PDM
As above, but in flame-
proof casing for explo-
sion-proof application
SIPART PS2
As above, but in flameproof aluminium
casing
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SIMATIC PDM
Electric actuators SIPOS 5 Flash
Rotary actuators
standard version and
modulating duty for safe
operation of valves
Rotary actuator
Standard version: T
c
10 - 4000 Nm (7 - 2950 lbf ft)
Modulating duty: T
c
15 - 2800 Nm (11 - 2065 lbf ft)
parameter assignments can be set by the
customer
tripping torque and speed settable within
type-specific ranges
binary and analog inputs and outputs
dependent on design
freely assignable signaling outputs
positioner
process controller
reference torque curves for the valve can be stored
and evaluated
speed setting dependent on travel
external analog speed input
positioner with proportional control/split-range
functionality
travel dependent freely adjustable positioning times
PROFIBUS DP with V1 services
MODBUS RTU
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SIMATIC PDM,
functional block,
COM-SIPOS,
SIMA
As above, but
linear actuators
modulating duty
Linear actuator
Modulating duty: F
c
5.5 - 152 kN (1240 - 34200 lbf)
Cut-off force and positioning speed of actuator setta-
ble within type-specific ranges,
otherwise as above
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SIMATIC PDM,
functional block,
COM-SIPOS,
SIMA
As above, but
part-turn actuators
standard version and
modulating duty
Part-turn actuator
Standard version: T
c
150 - 4300 Nm (111 - 3170 lbf ft)
Modulating duty: T
c
250- 3400 Nm (184 - 2510 lbf ft)
Tripping torque and positioning time settable
within type-specific ranges,
otherwise as above
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SIMATIC PDM,
functional block,
COM-SIPOS,
SIMA
As above, but
small part-turn actuators
standard version and
modulating duty
Small part-turn actuators
Standard version: M
ab
32 - 125 Nm (23.6 - 92.2 lbf ft)
Modulating duty: M
ab
32 - 125 Nm (23.6 - 92.2 lbf ft)
positioning time settable
otherwise as above
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SIMATIC PDM,
functional block,
COM-SIPOS,
SIMA Electropneumatic positioners
SIPART PS2
SIPART PS2, PS2 PA, PS2 FF,
PS2 EEx d, PS2 EEx d PA and PS2 EEx d FF
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Siemens FI 01 · 2007, US Edition
6 Overview

SIPART PS2 electropneumatic positioner

SIPART PS2 EEx d electropneumatic positioner in flameproof casing

SIPART PS2 in stainless steel casing
The SIPART PS2 electropneumatic positioner is used to control
the final control element of pneumatic linear or part-turn actua-
tors. The electropneumatic positioner moves the actuator to a
valve position corresponding to the setpoint. Additional function
inputs can be used to block the valve or to set a safety position.
A binary input is present as standard in the basic device for this
purpose. Benefits
SIPART PS2 positioners offer decisive advantages:
Simple installation and automatic commissioning (self-adjust-
ment of zero and span)
Simple operation with
- Local operation and configuration of the device using three
input keys and a user-friendly two-line LCD
- Programming through SIMATIC PDM
Very high-quality control thanks to an online adaptation proce-
dure
Negligible air consumption in stationary operation
"Tight shut-off" function (ensures maximum positioning pres-
sure on the valve seat)
Numerous functions can be activated by simple configuring
(e.g. characteristics and limits)
Extensive diagnosis functions for valve and actuator
Only one device version for linear and part-turn actuators
Few moving parts, hence insensitive to vibrations
External non-contacting position sensor as option for extreme
ambient conditions Application
The SIPART PS2 positioner is used, for example, in the following
industries:
Chemical/petrochemical
Power stations
Paper and glass
Water, waste water
Food and pharmaceuticals
Offshore plants
The SIPART PS2 positioner is available:
For single-action actuators: in plastic, stainless steel or alumi-
num casings, as well as flameproof aluminium casing (EEx d)
For double-action actuators: in plastic and stainless steel cas-
ing, as well as flameproof aluminum casing (EEx d)
For non-hazardous applications
For hazardous applications in the designs
- as intrinsically-safe device (EEx ia/ib) or
- in flameproof aluminum casing (EEx d) or
- in Ex n design (non sparking)
and in the versions:
With 0/4 to 20 mA control communication through HART signal
(as option)
With PROFIBUS PA communication interface
With Foundation Fieldbus (FF) communications interface.
Explosion-proof versions
The basic version of the device is available in an intrinsically-
safe design with degree of protection EEx ia/ib or in a non-intrin-
sically-safe design for zone 2 (see Technical data for intrinsi-
cally-safe versions).
A non-intrinsically-safe application is permissible in zone 1 for
the SIPART PS2 EEx d flameproof version (see "Technical Data").
It is then permissible to use all option modules (except external
actuator travel detection systems, SIA module and NCS).
Stainless steel casing for extreme ambient conditions
The SIPART PS2 is available in a stainless steel casing for use in
particularly aggressive environments (e.g. offshore operation,
chlorine plants etc.). The device functions are the same as those
of the basic versions. Electropneumatic positioners
SIPART PS2
SIPART PS2, PS2 PA, PS2 FF,
PS2 EEx d, PS2 EEx d PA and PS2 EEx d FF
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Siemens FI 01 · 2007, US Edition
6 Design
The SIPART PS2 positioner is a digital field device with a highly-
integrated microcontroller.
The positioner consists of the following components:
Casing and cover
PCB with corresponding electronics with or without communi-
cation through HART
or with electronics for communication in accordance with
- PROFIBUS PA specification, IEC 61158-2; bus-supplied de-
vice, or
- Foundation Fieldbus (FF) specification, IEC 61158-2, bus-
supplied device
Actuator travel detection system
Terminal housing with screw terminals
Pneumatic valve manifold with piezoelectric valve precontrol.
The valve manifold is located in the housing, the pneumatic con-
nections for the inlet air and the positioning pressure on the right-
hand side. A pressure gauge block and/or a safety solenoid
valve can be connected there as options. The SIPART PS2 posi-
tioner is fitted to the linear or part-turn actuator using an appro-
priate mounting assembly. The circuit board container in the
casing provides slots for separately ordered boards with the
following functions:
I
y
module:
Position feedback as a two-wire signal 4 to 20 mA.
Alarm module (3 outputs, 1 input):
Signaling of two limits of the travel or angle by binary signals.
The two limits can be set independently as maximum or mini-
mum values.
Output of an alarm if the setpoint position of the final control
element is not reached in automatic mode or if a device fault
occurs.
Second binary input for alarm signals of for triggering safety
reactions or for blocking/signaling function or safety position.
Limit signaling through sl