QuickstartwiththeFieldCommunicator
Itshouldvarybetween0mAor4mAand20mAaccordingtothemassowrateofyourprocess.
4.5Performalooptest
Alooptestisawaytoverifythatthetransmitterandthereceivingdevicearecommunicatingproperly.
AlooptestalsohelpsyouknowwhetheryouneedtotrimmAoutputs.Performingalooptestisnot
arequiredprocedure.However,
MicroMotionrecommendsperformingalooptestforeveryinputor
outputavailableonyourtransmitter.
Procedure
1.TestthemAoutput.
a.PressServiceTools→Simulate→SimulateOutputs→mAOutputLoopTests,andselect4mA.
b.ReadthemAcurrentatthereceivingdeviceandcompareittothetransmitteroutput.
Thereadingsdonotneedtomatchexactly.Ifthevaluesareslightlydifferent,youcancorrect
thediscrepancybytrimmingtheoutput.
c.Select20mA.
d.ReadthemAcurrentatthereceivingdeviceandcompareittothetransmitteroutput.
Thereadingsdonotneedtomatchexactly.Ifthevaluesareslightlydifferent,youcancorrect
thediscrepancybytrimmingtheoutput.
2.TestthesecondarymAoutput.
PressServiceTools→Maintenance→SimulateOutputs→mAOutput2LoopTest,andrepeattheloop
testforthesecondarymAoutput.
3.Testthefrequencyoutput.
Note
IftheWeights&Measuresapplicationisenabledonthetransmitter,itisnotpossibletoperforma
looptestofthefrequencyoutput,evenwhenthetransmitterisunsecured.
a.PressServiceTools→Simulate→SimulateOutputs→FrequencyOutputTest,andchoosethe
frequencyoutputlevel.
b.Readthefrequencysignalatthereceivingdeviceandcompareittothetransmitteroutput.
c.ChooseEnd.
4.Testthediscreteoutput.
a.PressServiceTools→Simulate→SimulateOutputs→DiscreteOutputTest.
b.ChooseOff.
c.Verifythesignalstateatthereceivingdevice.
d.ChooseOn.
e.Verifythesignalstateatthereceivingdevice.
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MicroMotion9739MVDTransmitters