EnerSys Alpha Cordex CXC HP - Configure the Shunts

Cordex®CXCHPControllerSoftwareManual|5-DCpowersystems
5.3.5.1. Rectifier configuration guidelines
Thefollowingareguidelinesforsettingrectifierconfiguration.Someorallmayapply.
Over Voltage Protection
Threshold
Setthisvalueasfaraboveequalizevoltageorboostvoltageasneeded.Fora48V
system,theusualvalueis60V.Theactualupperlimitofthissettingdependsonthe
rectifiermodel.IftheRectifierConfigurationErroralarmisactive,itusuallymeansthe
OVPthresholdistoohighortooclosetotheequalize,boostorfloatvoltagesetting.It
isnecessarytohaveatleast1V(for48Vsystem)differencebetweenfloat,equalize
andOVPsettings.
System Start Delay SetthisvaluetodelaythestartupofallrectifierswhenACreturnstogiveotherAC
equipmentonsiteachancetostartupfirst.
Module Start Delay Setthisvaluetoapplyastaggeredstartdelaytoindividualrectifiers.Thishelpslim
itACinrushcurrentandgivesthecontrollertimetoengagechargecurrentcontrol,if
enabled,topreventabatterybreakerorfusefromopening.Eachrectifierisassigned
amodulestartdelaythatisamultipleoftheconfigurationvalue.Ifthevalueexceeds
250s,thevaluestartsagainatthelowestmultiple.Forexample,ifthemodulestartde
layis60sandthereareeightrectifiersinthesystem,thestartdelaysassignedtothe
rectifierswillbe:1s,60s,120s,180s,240s,1s,60s,120s.Thismeansthatthreerecti
fierswillbeassignedthesame1s,60s,and120sdelays.
Current Limit/Power Limit Setoneofthesevalues(notboth)tolimittheoutputcurrentoftherectifier.Thisisnor
mallyonlydoneifthesitehasundersizedACbreakersorisrunningonanundersized
ACgenerator.Thesevaluesmustonlybesetwhileinfloatmode.Settingthemwhen
thebatteryisbulkchargingmayresultintoomuchcurrenttothebattery.
Fast Soft Start Setthistoenabledifthesystemhasnobatteriesandtheloaddoesnotturnonwhen
ACreturns.
CL/PL alert Thisisusuallydisabledwhenthesystemhasbatteriestoavoidacurrentlimitorpow
erlimitalarmduringbatterycharging.
Ramp Test Thisisnormallyenabledtodetectifarectifierhasbeendisconnectedfromtheload.
Whenenabledandiftherectifierissourcinglessthan2.5percentofit’smaximum
current,therectifierwillbrieflyraiseit’soutputvoltageby0.5V(fora48Vsystem)
onceperminute.Iftherectifiercannotsourceatleast2.5percentofit’smaximumcur
rent,theramptestwillfailandaRectifierFailalarmwillactivate.
5.3.6. Configure the shunts
Bydefaultthesystemhasoneshunt.Youmayaddorremoveshuntsasneeded.
ToconfigureashuntyouneedanADIOmodulewithcurrentinputs.Theshuntwillmapthecurrentinputs
fromtheADIOmoduletotheLoad Current Source fieldoftheLoadConfigurationtableortheBattery
Current Source fieldoftheBattery Configuration table.
To configure a shunt:
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