COVER AS 4208077 - Caterpillar

Click on the "Calibrate" menu.
Select "DC Bus Voltages". Refer to Illustration 9.A "Calibration of a Channel" window will open. Refer to Illustration 10.
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Click on "View Status" button.Another "Calibration Group Status" window will open. Refer to Illustration 5.
Drag this window aside if the view of "Calibration of a Channel" window is blocked.
Click on "Use Defaults" on "Calibration of a Channel" window.You will be prompted to "Enter Calibration Point for Positive DC Bus".Note: The "Minimum Button" on "Calibration of a Channel" window is selected. Refer to Illustration 10. The "Minimum Button" on "Calibration of a Channel" window is the default selection.
Measure the DC Bus Voltage from the DC Common terminal to the Positive DC Bus terminal.This value should be close to zero.
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Enter this value in "Enter Calibration Point" field and click "OK". Refer to Illustration 11.The System will process the Calibration and the System will automatically change the prompt to "Enter Calibration Point" for "Negative DC Bus". The "Calibration of a Channel" window will change in order to show "Positive DC Bus Minimum value entered". Refer to Illustration 12.
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Measure the DC Bus Voltage from the DC Common terminal to the Negative DC Bus terminal. Refer to Illustration 13.This value should be close to zero.
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Enter the value that was measured in Step 26 into the "Enter Calibration Point" field and click "OK". Refer to Illustration 13.The System will process the calibration. The system will prompt you to "Enter Calibration Point for Positive DC Bus". Refer to Illustration 14.The "Calibration Group Status" window will display "Negative DC Bus Voltage Minimum value entered". Refer to Illustration 14.
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Click on the "Maximum" button.You will hear the input contactor "K1" close. The Static Switch will turn on and the DC Bus will rise.You will be prompted to "Enter Calibration Point for Positive DC Bus". Refer to Illustration 16.
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Measure the DC Bus Voltage from the DC Common terminal to the Positive DC Bus terminal on the Field Coil Driver Module. Enter this value in "Enter Calibration Point" field. Click "OK". Refer to Illustration 13.The System will process the calibration. The system will automatically prompt you to "Enter Calibration Point for Negative DC Bus". Refer to Illustration 17.The "Calibration Group Status" window will Display "Positive DC Voltage Calibration Complete but not saved".
Measure the DC Bus Voltage from the DC Common terminal to the Negative DC Bus terminal.
Enter this value in "Enter Calibration Point" field and click "OK". Refer to illustration 13.The System will process Calibration. The System will prompt you to "Enter Calibration Point for positive DC Bus".The "Calibration Group Status" window will display "Negative DC Voltage Calibration Complete but not saved".
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Click on "Save" on "Calibration of a channel" window.You will hear the input contactor "K1" open.The Calibration ends. You will see the following message on the text window of UPS View: "Flash reprogrammed OK". This indicates that the Calibration has been done successfully.
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To end the calibration in UPS View, click on the "Connection" on the Menu