Hello, everyone,
I use Sipart ps2 positioner. Can i use "fail in place" -? Any firmware update available?

 

This is a conditional issue which depends on

- the actuator (single vs double acting)
- the PS-2 model
- the control signal/power to the positioner

according to Siemens PS-2 app note, "SIPART PS2 Valve Positioner Fail Safe Positions, ADPS2-2", June 2015 (there are earlier versions).

PS-2 Failsafe Positions