XITRON XT2640 - Wiring to Channels; Ø Wiring Using Internal Current Measurement

XT2640OperatingManual 13July2016 Page20of187
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9 WIRINGTOCHANNELS
ThissectionshowstypicalwiringtoeachchannelineachVPAmatchingtheconfigurationWIRINGsettingforthatVPAintheXT2640
MEASCONFIGmenu.
9.1 1ØWIRINGUSINGINTERNALCURRENTMEASUREMENT
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CAUTION:
 FORUSEWITHSH,SD,AH,AD,LH,LD,WHORWDCHANNELSONLY
 DONOTCONNECTWIRINGWHILEVOLTAGEPRESENT.
 ENSUREWIRINGISCORRECTBEFOREAPPLYINGVOLTAGE.
 DONOTPASSLOADCURRENT>2ArmsWITHTHEXT2640TURNEDOFF.
WIRING:
 Thickerconnectionsarecurrentcarrying.Ensurewireusedisratedforthemaximumvoltageandcurrenttobe
encountered.
 Thinnerconnectionsarenotcurrentcarrying.Ensurewireusedisratedforthemaximumvoltagetobeencountered.
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Thewiringconnectionsshownaboveensurethebestoverallsystemaccuracyinmostcircumstances,measuringthe
voltageatthesourceandtheloadcurrent.Forapplicationsrequiringaccuratemeasurementsofthepowertotheload
whenusinglowvoltages(<50V)andhighcurrents(>1A)changetheREDV+terminalconnectiontothatoftheBLUEA‐
terminalinsteadoftheYELLOWA+terminalshownabove,thisensuresthatthevoltagedropacrosstheAterminaldoes
notaffecttheVmeasurement,attheexpenseofthecurrentandpowermeasurementsincludingthecurrentandpower
drawnbytheVinput(whichmaybeadjustedforbyusingtheADJUSTsettingintheMEASCONFIGscreen).
XT2640CONFIGURATION:
 IntheXT2640MEASCONFIGmenuyoushouldsetSCALEforthechanneltoOFF.
 ForeitherconnectionmethodyoumayusetheADJUSTsettingintheMEASCONFIGmenutosettheXT2640toadjustthe
signalsfortheconnectionmethodandwhethersourceorloadresultsarerequired.
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A
V
L or
HI
N or
LO
L or
HI
N or
LO
From
SOURCE
To
LOAD
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XT2640
CH