EnerSys Alpha Cordex CXC HP - Page 230

Cordex®CXCHPControllerSoftwareManual|21-Maintainingmodules
Current
(
A
)
=
ADIO
CT
Input
Reading
(
V
)
CT
Range
in
Volts
(
V
)
×
CT
Range in
Amps
(
A
)
+
CT Offset
(
A
)
To perform a single-point calibration on a current transducer:
1. GotoSystems > Inventory > Current Transducers andselectoneoftheavailablecurrent
transducersbyselectingtheGO TO button.
2. SettheOffset tozero.
3. Measuretheactualcurrentflowinginamps.Itmaybeeasiesttodothismeasurementat0.0amps.
4. Recordthemeasuredvalue:____________A.
5. Subtractthedisplayedvalue:____________A,fromthewebinterface.
6. Calculatethenewoffset:_____________A.Offset=MeasuredValue-DisplayedValue
7. SelecttheEDIT buttonoftheOffset field.EnterthenewoffsetinampsandselectSave.
8. VerifythattheOffset fieldwasupdated,andthatthenewdisplayedvaluematchesthemeasured
value.
21.1.4.3. Temperature probe calibration
Notice: Calibration is considered an expert user task.
Tocalibrateatemperatureprobecorrectly,youneedhardwaretogenerateandmeasuretheinputsignal
accurately.
ThistopiccovershowtodoaSingle-Point Calibration.IfyouneedtodoaSlope/Offset Calibration or
aTwo-Point Calibration,afactorycalibrationdocumentshouldbewrittenshowing,step-by-step,how
boththehardwareandthesoftwareneedtobeusedtoperformanaccuratecalibration.
AtemperatureprobeTemperature defaultcalculationisasfollows:
Temperature
(°
C
)
= Voltage
− 2.73)
(
× 100
Temperature
(°
F
)
= (Voltage
− 2.73) × 180 + 32
To perform a single-point calibration on a temperature probe:
1. GotoModules,intheCAN Modules tableselectanADIO andselecttheGO TO buttontoview
theavailableTemperature Inputs.
2. FormtheTemperature Inputs table,choosefromtheavailabletemperatureinputsandselectthe
GO TO button
3.
SettheCalculation Offset tozero.
DonotconfuseCalibration Offset withCalculation Offset.Youshouldonlyreadandchange
valuesinthetablelabeledTemperature Probe.
Settingtheoffsettozerowillmakethetemperaturereadingveryhighandmaycausetemperature
compensationandothertemperaturealarmstoactivate.
0350058-J0 Rev AL Page 229