Xantrex Technology RS232-XHR manual Current Readback Calibration Procedure

Page 61

Current

Readback

Calibration

Procedure

Calibration

Current Mode Calibration

1.Connect the current shunt and voltmeter to the power supply as shown in Figure 4.2.

2.Activate calibration mode by sending command CMODE ON or CMODE 1 to the power supply.

3.Send command IRLO; VRLO to the power supply. Wait for the supply to settle. Measure and record the output voltage shown on the external voltmeter. Send IRLO again.

4.Send command IRHI; VRHI to the supply. Wait for the supply to settle. Measure and record the output voltage shown on the external voltmeter. Send IRHI again.

5.Calculate IRLO and IRHI from the voltages taken from the external voltmeter and the shunt resistance. I=V/R.

6.Send the command IRDAT <ilo>,<ihi> to the power supply. <ilo> and <ihi> are the current values obtained from sending the IRLO and IRHI commands to the power supply. When the power supply is calibrated, the low to high current readback calibration values are stored as constants.

7.Program the supply at various levels using the ISET command to confirm that the calibration was successful and that linearity is observed. Refer to the current readback accuracy specification in Section 1.

8.Turn off calibration mode by sending the command CMODE OFF or CMODE 0 to the power supply.

Release 3.1

59

Image 61

Contents RS232-XHR RS232-XFR Page Operating Manual for Phone 604 422 Toll Free North America 800 667 Fax 604 421 How do you get service?What does this warranty not cover? Disclaimer Product Model Number Serial Number Purchased From Purchase Date Information About Your Power SupplySupply SafetyManual Revisions Main SectionsAbout This Manual Contents Calibration Description Features and SpecificationsFeatures Features and FunctionsFeatures and Specifications Readback FunctionsModels 140 12-100 20-60 35-35 40-30 SpecificationsModels 60-20 100-12 150-8 300-4 600-2 Models 300 12-220 20-130 33-85 40-70 Models 60-46 100-28 150-18 300-9 600-4 Models 130 20-50 33-33 40-25 60-18 Models 100-10 150-7 300-3.5 600-1.7 Initial Inspection IntroductionInitial Inspection Installation and ConfigurationRS-232 Interface Subplate Located on Power Supply Rear Panel RS-232 Interface PCB Step # Description Action Reference Basic Setup ProcedureCommunications Flow Switch Setting ConditionBaud Rate Jumper Connections RS-232 Connector Pin XON Switch Setting ConditionJumper J216 Connections RS-232 Connector Pin Power Supply DCE Host Computer DTE Pin connectorRemote Switch Position Power on resultsStartup Iset Condition Default Settings Model ExampleExample RS-232 Connection CommandLocal Lockout Parameter Setting Power Supply Settings12 OVP Control Mode Selection User Options and SettingsHigh OFF LOW User Signals J7 Connector User SignalsJ7 User Signal Connector Circuit Block Diagram J7 User Cable with Ferrite Block RS-232 Operation Command SyntaxFormat OperationFloating Number Definition Example Parameter Description FormOperation Command Description Command SummaryAUXA? Cmode Auxa 1 on Command ReferenceResponse DLY seconds Lockout. See also Remote/Local Operation on Snsp Remote/Local Operation on Status, and Fault Registers on Section Accumulated Status, Status, and Fault Registers 4096 Condition Mnemonic Bit Position Bit WeightError # Error Identification Explanation Error CodesLEDs TroubleshootingCalibration Setup Voltage Mode CalibrationVoltage Program Calibration Procedure VoltageVoltage Readback Calibration Procedure Current Calibration Setup Current Mode CalibrationCurrent Program Calibration Procedure Current Readback Calibration Procedure Over Voltage Protection OVP Calibration Page Xantrex Technology Inc