Valve Is Opening Instead Of Closing Or Vice Versa; Valve Does Not Fully Open Or Close; 10 Valve Actuates Too Quickly - Siemens PS2 Installation And F.a.q

FAQ / TROUBLESHOOTING
6

Valve is opening instead of closing or vice versa...

Change direction in programming Parameter #7 to RISE or FALL to
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whichever is required.
7 If power is interrupted and the connection between the PS2 is
broken...
The PS2 Positioner will vent all gas inside the actuator on the single
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acting Positioner.
A double acting PS2 Positioner will vent what ever is up stream of port
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Y2 and supply full regulator set pressure to Y1, closing or opening the
valve.
When power is restored and you have 4-20 mA, the unit will power up
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and go directly into the Automatic Mode. There is no need for
reprogramming the PS2 Positioner.
8 Positioner goes past 0% or past the closed to a negative value...
Sign of over travel. This could be due to worn trim.
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Improper calibration - re-calibrate.
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9 Valve doesn't fully open or close...
Check to see gearing has not been changed either in the Program
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parameters or on the physical selection switch.
Check connections for loose hardware. This causes dead band.
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Check for proper air supply pressure.
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Improper calibration - re-calibrate.
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Valve is plugged with material.
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10 Valve actuates too quickly...

Set restrictor valve to slow down pneumatically (Refer to Figure 17).
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Set ramp up and ramp down time accordingly, in the programming
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parameter numbers 10 and 11.
* Consult the Programming parameter chart on Pages 31 & 32 to choose time
increments accordingly.
Dyna-Flo Control Valve Services Ltd.
Phone: 780 469
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AND SOLUTIONS
4000 | Toll Free: 1
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866 396 2356 | www.dynafl o.com
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P-PS2Q0619A
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