SIPART PS2 Valve Positioner

The SIEMENS SIPART PS2 is a widely used positioner for linear and part-turn actuators in an extremely diverse range of process industries. The proven all-round talent provides comprehensive functions – including intelligent diagnostics – and can optionally communicate using HART 7, PROFIBUS PA 3.02 or Foundation Fieldbus ITK 6.0. A product that has been tried and tested so many times is always the right choice.

The Siemens SIPART PS2 valve positioner is optionally available with Makrolon, aluminium, stainless or flameproof steel enclosure. The positioner is well-equipped for all ambient conditions. Available as standard with IP66 or NEMA 4x protection, it defies even challenging application environments.

In dialogue with host systems, the vale positioner demonstrates its communicative side. It can be integrated into the most diverse communication landscapes using the PROFIBUS PA, Foundation Fieldbus or HART protocols. Furthermore, SIMATIC PDM can be applied with HART and PROFIBUS PA to clearly display and document saved trend values, histograms, and commissioning and operating data.

The SIPART PS2 is equipped as standard with comprehensive diagnostics functions. To provide a warning of costly failures during operation, the positioner permanently checks the actuator and valve. The SIPART PS2 valve positionercommunicates ongoing events in real-time following NE107. Additionally, the SIPART PS2 provides diagnostics functions such as the “Valve Performance Test” (VPT). Using this test, the state of a valve can be assessed during a planned plant standstill. The diagnostics package of our positioner is rounded off by the “Full Stroke Test” (FST), Step Response Test (SRT), and “Multistep Response Test” (MSRT). The diagnostics cockpit allows users to obtain a clear introduction and quickly assess the state of a valve.

With a regular “Partial Stroke Test” (PST), the SIPART PS2 ensures that ESD (Emergency Shut Down) valves and other open/close valves remain free to move in emergencies. The positioner can also test the attached solenoid valve. The partial stroke test can be used for control valves to recognize maintenance requirements at an early stage during the ongoing process. Fail in place, and our multi-talent also provides fail-safe functions. The fail in place function causes the valve to remain in the last position should the power supply fail. Alternatively, the fail-safe function makes sure that the valve moves to the safety position. This function is even suitable for use in SIL2 measuring circuits.

Siemens all-rounder can do even more: together with the SIPART PS2 booster; it allows fast control of large actuators with a Cv value of 2.0. Due to direct mounting on the positioner, the manual piping requirements are reduced to a minimum. Our positioner’s numerous functions have made it what it is today: a multi-talent that can optimally handle a wide spectrum of specific challenges.