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Problem with Sipart PS2

Created by: sridaran at: 9/29/2010 1:12 PM (0 Replies)

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9/29/2010 1:12 PM	Rate (0)
sridaran Posts: 2 Rating: (0)	JSMTek Greetings, I have a rotary valve, controlled by Sipart PS2, with some strange results. The feedbackdisplay indicates 100% when the valve is physically closedand 0% when the valve is open.. This is also for the setpoint, when I send 100% the valve closes and vice verca. This i managed to overcome by setting the "Setpoint Direction" parameter. But still the feedback is reversed. Any suggestions how to correct this? This is aNC valve, one way actuator with spring return. I'm having similar problem as well with my reserve acting linear actuators. The feedback from the Iy unit to DCS is correct but the position feedback shown on the Sipart PS2 is reverse (i.e. When valve is fully closed, feedback shown in DCS is 0% but feedback shown on Sipart PS2 is 100% and vice versa). I have tried to change the parameter 7(Setpoint direction) and parameter 38( Direction of manipulated variable for display) but the results is the same. The problem only occurs with my reverse acting linear actuators. The direct acting actuators are fine. Appreciate if someone who have faced similar problem and resolved it could advice what can be done ;) Power cycling andreinitializationdoesn'tsolve the problem as well. Splitted from Sipart PS2 Strange Beahveour.
sridaran Posts: 2 Rating: (0)	Last edited by: O_Moderator at: 9/30/2010 9:45 AM new subject after splitting Last edited by: sridaran at: 9/29/2010 1:20 PM
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