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9. Commissioning using SHC1
Handheld Interrogator
Read this chapter if the SHC1 Handheld Interrogator is being used to communicate
with Searchpoint Optima Plus.
Note:TheinstructionsthatfollowassumethattheSHC1isswitchedon,inOptima+mode,intheMain
Menu.SeeChapter8“UseoftheSHC1HandheldInterrogator”fordetails.
9.1 Introduction
This chapter explains several operations that may be required during commissioning. Only First Time Switch
Onismandatory;Test4-20mALoopIntegrityisrecommended.TheinstructionsassumethattheSHC1is
switchedon,inOptima+mode,intheMainMenu.SeeChapter8“UseoftheSHC1HandheldInterrogator”
for details.
First Time Switch On
Checks that are required on rst power up
Clear Faults or Warnings
How to clear faults or warnings that may be generated during commissioning
Fix the 4-20 mA Output
How to force the mA output to set levels in order to calibrate the controller or to test the
system
Test 4-20 mA Loop Integrity
Check that there is sufcient compliance in the loop to signal alarm and overrange
Caution: After changing any parameter, poll the Searchpoint Optima Plus and verify that the received
value is correct.
9.2 First Time Switch On
Note:SearchpointOptimaPlusissuppliedcalibratedandreadyforuse.Itdoesnotrequirecalibration
during commissioning.
Note:Duringcommissioningthe4-20mAoutputcanbemonitoredeitheratthecontrolroomorlocally
with a multimeter. When connecting or disconnecting a multimeter, power off the Searchpoint Optima Plus,
otherwise the unit will indicate a latched warning that the 4-20 mA loop was broken. If this occurs it can be
clearedusingtheSHC1HandheldInterrogator.
1. Beforeapplyingpowertotheunit,ensurethattheeldwiringiscorrectandallelectricalconnections
are in accordance with Section 4.
2. Applypower.CheckthatthesupplyvoltagetotheSearchpointOptimaPlusisbetween18and32V.
3. Monitorthe4-20mAoutputduringthestartupsequence,whichshouldbeasfollows:-
Current output Duration
<1 mA < 5 s
2 ± 0.2 mA < 60 s
4 ± 0.2 mA ongoing
Note:Ifgasispresent,theunitwillindicateagasreading.