danw

In answer to Jeff's original question about "the actual valve position as a HART variable", the primary HART variable, PV, is what Siemens calls Readback and is the actuator/valve's position value in percent.

I checked position in a static state, with air pressure removed so the valve position was frozen. The PS2's display read 26.0%, and all three software HART secondary masters (Viator utiliy, PDM and Pactware) all showed 26.0% as the primary variable.

So actual valve position is the primary variable is position.

Since PDM trends setpoint, I'm guessing that setpoint might be SV, the secondary variable, but I have no tool to address an SV to prove the point.

Neither PDM nor Pactware list HART assigned variables, at least in any manner that can be clearly interpreted.

How one utilizes SV, TV, and QV shall remain a mystery.
|
The attached pdf file shows
- screen shots from PDM, Pactware and Mactek's utility reading the primary variable
- all PDM's entries for the PS1, over 100. Should anyone have a magic decoder ring that can ID the HART variables, please let us know.

Hello Sir,Have a good day.I have recently facing problem in a newly buying Siemens PS2(2wire, 4-20ma, 2 wire, without HART) smart positioner connect with my existing Single acting, air to open linear actuator(pneumatic control valve) having 20mm stroke when I am going to newly calibation.During commissioning this new positioner with existing control valve/actuator in initial condition its display shows P 85 and NOINI mode, at that time when if i press (+) and (-) button then the actuatortotally doesn’t not move.only small clicking sound hearing inside the positioner and little air Release from actuating pressure line(Y1) of positioner , however pneumatic(4kg air pressure) and electrical(4ma , 24VDc) connection is ok there. Interesting matter is, if i place old existing positioner there then it easily move the actuator after pressing (+) and (- ) key in P85, NOINI mode. Is there any problem of lever setting or restrictor setting there.i don’t change any restrictor setting in this newly buying positioner during commissioning there.i am confused if there any setting required in restrictor at positioner during newly commissioning?

I apreciating if anybody here who can advice me kindly please to fix this problem.

------------------------------------------------------------------------------------------
Split from Position readback on Sipart PS2 valve positioner as a HART variable.

Why did you do this?

What's your problem?

Closed cause question posted twice.

The second thread with the subject SIPART PS2: cannot move existing actuator at all is published within the conference Process Instrumentation / Analytics / Weighing Systems SIWAREX.