Emerson Micro Motion 9739 MVD

Integratethemeterwiththecontrolsystem
Table7-8OptionsforDiscreteOutputSource continued
Code
OptionDisplayProLinkII
FieldCommuni-
catorCondition
Discreteoutput
voltage
(2)
ONSite-specic FlowSwitch
(5)(6)
FLSWFlowSwitch
Indication
FlowSwitch
OFF
0V
Forwardow
0V
FlowDirectionFLDIR
Forward/Re-
verseIndication
Forward/Re-
verse
ReverseowSite-specic
ONSite-specic Calibrationin
Progress
ZEROCalibrationin
Progress
Calibrationin
Progress
OFF
0V
ONSite-specic
FaultFAULT
FaultCondition
Indication
Fault
OFF
0V
ConfigureFlowSwitchparameters
Display
OFF-LINEMAINT→OFF-LINECONFG→IO→DO→CONFIGFLSW
ProLinkII
ProLink→Conguration→Flow→FlowSwitchSetpoint
ProLink→Conguration→Flow→FlowSwitchVariable
ProLink→Conguration→Flow→FlowSwitchHysteresis
FieldCommunicatorCongure→ManualSetup→Inputs/Outputs→DiscreteOutput→DOAssignment
Congure→ManualSetup→Inputs/Outputs→DiscreteOutput→FlowSwitchSource
Congure→ManualSetup→Inputs/Outputs→DiscreteOutput→FlowSwitchSetpoint
FlowSwitchisusedtoindicatethattheowrate(measuredbytheconguredowvariable)hasdropped
belowtheconguredsetpoint.Theowswitchisimplementedwithauser-congurablehysteresis.
Procedure
1.SetDiscreteOutputSourcetoFlowSwitch,ifyouhavenotalreadydoneso.
2.SetFlowSwitchVariabletotheowvariablethatwillbeusedtocontroltheowswitch.
3.SetFlowSwitchSetpointtotheowratebelowwhichyouwanttheowswitchtoturnon.
4.SetHysteresistothepercentageofvariationaboveandbelowthesetpointthatwilloperateasa
deadband.
Hysteresisdenesarangearoundthesetpointwithinwhichtheowswitchwillnotchange.The
defaultis5%.Thevalidrangeis0.1%to10%.
(5)Ifyouassignowswitchtothediscreteoutput,youmustalsocongureFlowSwitchVariable,FlowSwitchSetpoint,and
Hysteresis.
(6)Ifyourtransmitterisconguredwithtwodiscreteoutputs,youcanassignowswitchtobothofthem.However,
theywillsharethesettingsforFlowSwitchVariable,FlowSwitchSetpoint,andHysteresis.
ConfigurationandUseManual
131