Baker Hughes Masoneilan SVIII AP, Руководство по установке и обслуживанию

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Masoneilan SVI II AP Installation and Maintenance Manual =
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© 2017 Baker Hughes, a GE company, LLC. All rights reserved.
Safe Area The area of a plant where there never is an explosion hazard pres-
ent, such as the control room or a wire marshalling rack area.
Sig Hi In the SVI II AP configuration, the input current setting at which the
valve is fully open (ATO) or fully closed (ATC).
Sig Lo In the SVI II AP configuration, the input current setting at which the
valve is fully closed (ATO) or fully open (ATC).
Single Acting The action of a position with a single pneumatic output for operation
with a spring return actuator. (see double acting).
Split Range A control configuration where a single control output is sent to two
or more control valves. Each control valve positioner is calibrated to
respond to a separate portion of the control signal. An example is a
steam valve and a cooling water valve arranged to be both closed at
50% and the steam valve to open.
STOPS The SVI II AP runs STOPS procedure to adjust the positioner to actual
valve travel. First the output pressure is reduced to zero and the
position is recorded. That position corresponds to 0%. The output
pressure is raised to its maximum based on supply pressure. The
position is recorded and corresponds to 100%.
Stroke The total range (An accumulated value of 100% travel = 1 stroke. The
travel does not need to occur in one movement.). Often used as a
verb to describe the process of moving the valve.
Tag The formal designator the control valve used in control loop docu-
mentation.
Tight Shutoff (TS ) A positioner property which is selected and adjusted when it is
desired to prevent operation of the valve at or near the closed posi-
tion. The positioner causes all available actuator force to be applied
to the valve seat at a position set point equal to or less than the TS
adjustable parameter. A dead band is applied to prevent cycling in
and out of this behavior.
ValVue Masoneilan full featured software for diagnostics, calibration, and
configuration of SVI II AP.
VDE ⁄ VDI 3845 A standard common in Europe for mounting positioners and acces-
sories on rotary valve actuators.
VIEW DATA A mode of the positioner in which the configuration and calibration
parameters can been examined, either remotely or with the local
display.
VIEW ERR A mode of the positioner in which the error status or error messages
can be examined.