Siemens SIPART PS2 Service Manual

Troubleshooting Procedures
3.30 Valve Does Not Go Fully Closed/Open
PS2 Troubleshooting Guide
42 Service Manual, 03/2017, A5E36661550-AA
3.30
Valve Does Not Go Fully Closed/Open
● From AUT or MAN mode, press button for 5 seconds.
– Observer parameter name in the lower left hand corner.
● Continue to press
button until "YCLS" Parameter is reached.
– Note: While in configuration mode, the positioner is NOT controlling the valve.
● Use
and buttons to change Parameter values:
–
Set Parameter YCLS to "Up do" (Tight Closing Up and Down )
● To exit configuration mode, press and hold
button for 5 seconds.
– Unit should be in Manual Mode.
● Press and release
button once to enter AUTO mode.
● Verify the valve assembly goes to the fully open and/or closed position with a 0 or 100%
command signal.
● If not:
– The problem may be the input signal. Use the PS2’s display as a current meter. This
is found in Diagnostic parameter "mA".
– Verify unit is in Automatic mode.
– Provide a 4 mA input signal.
– Press all three buttons down until display changes.
○ Diagnostic menu will be displayed. The diagnostic name can be found in the lower
right corner.
● Press the
button to advance through the menu.
– While pressing and holding
button, press the button to go backwards in menu.
● Go to option "mA".
● Observe display and verify if the positioner is actually displaying ≈ 4 mA. If not, then the
input signal is the cause.
● To exit diagnostic mode, press and hold
button for 5 seconds.

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