| Overview |
 Electropneumatic positioner SIPART PS2 in the aluminum enclosure. |
 SIPART PS2 electropneumatic positioner in flameproof aluminum enclosure with manometers. |
 SIPART PS2 in stainless steel enclosure with manometers. |
| The SIPART PS2 electropneumatic positioner is used to control the final control element of pneumatic linear or part-turn actuators. 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-adjustment of zero and span)
- Simple operation with
- - Local operation (manual operation) and configuration of the device using three buttons and a user -friendly two-line display
- - Parameterization via SIMATIC PDM
- Very high-quality control thanks to an online adaptation procedure
- Negligible air consumption in stationary operation
- "Tight closing" function (ensures maximum positioning pressure on the valve seat)
- "Fail in place" function: Current position is retained on failure of auxiliary electrical power and/or pneumatic failure (does not apply in conjunction with SIL).
Example: For an actuator with a volume of 8 liters, the typical position stability of a SIPART PS2 with "Fail in Place" is 0.3 % per hour.
- Numerous functions can be activated by simple configuring (e. g. characteristic curves and limits)
- Extensive diagnostic 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 sensor as option for extreme ambient conditions
- "Intelligent solenoid valve": Partial Stroke Test and solenoid valve function in one device
- Partial Stroke Test e. g. for safety valves
- Full Stroke Test, Multi Step Response Test, Valve Performance Test for performance and maintenance evaluation of the valve
- Can also be operated with purified natural gas, carbon dioxide, nitrogen or noble gases
- SIL (Safety Integrity Level) 2
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| Application |
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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 can be used with all pneumatic actuators and is available for delivery:
- In various enclosure designs and various materials (polycarbonate, aluminum, and stainless steel)
- For non-hazardous applications
- For hazardous applications in the versions
- - Intrinsic safety type of protection
- - Flameproof enclosure type of protection
- - Non-sparking type of protection
- - Dust protection by enclosure type of protection
and in the versions:
- With 0/4 ... 20 mA control with/without communication through HART signal
- With PROFIBUS PA communication interface
- With FOUNDATION Fieldbus (FF) communications interface
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