Siemens SIPART PS2 Service Manual

Appendix A
A.4 SIPART PS2 Valve Positioner Fail-Safe Positions
PS2 Troubleshooting Guide
Service Manual, 03/2017, A5E36661550-AA
65
Figure A-4 Figure A-4 Reaction to failure of auxiliary power with fail in place
Profibus Parameters
The following safety parameters are accessible using the local pushbuttons or Siemens’
SIMATIC PDM
1
software.
FSTY
, Fail Safe Type: Determines position of actuator upon loss of digital communication.
This parameter has three choices:
FSVL
, Fail Safe Value: Positioner will drive actuator to "FSVL" position, see FSVL
parameter.
FSSP
, Fail Safe Setpoint: Positioner will stay at last known setpoint before communication
loss.

Siemens SIPART PS2 Specifications

General

Supply Pressure	1.4 to 7 bar (20 to 100 psi)
Enclosure Rating	IP66/NEMA 4X
Communication Protocols	HART, PROFIBUS PA, FOUNDATION Fieldbus
Output Pressure	0 to 100% of supply pressure
Hazardous Area Certification	ATEX, IECEx, FM, CSA
Type	Electropneumatic
Input Signal	4-20 mA
Rotation Angle	30° to 90°
Operating Temperature	-40°C to +80°C
Mounting	Linear and rotary actuators
Air Consumption	Typically less than 0.1 kg/h