PULLEY-AUXILIARY 9L7245 - Caterpillar

Calibration Procedure for the AC Voltage
During the calibration procedures, voltages up to 600 V are present in the control panel.Do not short the terminals to ground with any part of the body or any conductive material. Loss of life or injury could result from electrical shock or injury from molten metal.
Note: Perform this procedure whenever the following components are replaced: AC Interface Board and System Controller Board. AC Current Calibration is also required.
Table 1
Required Tools    
Part Number     Description    
146-4080     Digital Multimeter    
Place the key switch in the Bypass position for the MMU that is being calibrated.Note: In a Single-Module System, place the key switch in the Bypass position on the System Cabinet.Note: Proceed to step 5 for Single-Module Systems.
Connect a PC to the Parallel Cabinet Interface Board that is located in the System Cabinet.
Illustration 1 g01051091
Rotate the switch on the Parallel Cabinet Interface Board to the corresponding Multiple Module Unit.Proceed to Step 6.
Illustration 2 g00839256
Illustration 3 g00840027
Remove all sheet metal panels. Remove the sheet metal panel for the System I/O and Isolation Board (2).
Connect a PC to the System RS232/RS485 port that is located on the System I/O and Isolation Board. Make sure that jumper Jmp1 (3) on the System I/O and Isolation Board is in the correct position.Note: The lower side is RS232 and the higher side is RS485.
Close the input circuit Breaker in order to restore power to the System.The System will initialize, but the key will remain at the Bypass position.
Initialize your Personal Computer.
Illustration 4 g00840053
Run UPS View by double clicking over the icon (4) on your PC.
Illustration 5 g01003395
Illustration 6 g01003391
Click over the "PC Settings" (7) in the Menu Bar.The "Connection" window will open.
Click on the radio button that is for the "Direct Connect (serial)" (5) .
Select your PC COM Port for this Serial Connection and set the Baud rate.The radio button for "Detailed MMU Telemetry" must be checked.
Click on "OK" Button (10) in order to accept these settings.
Illustration 7 g01003435
Click on "Connection" on the Menu Bar.
Select "Connect" from the drop-down menu.The PC will be connected to the System and the PC will receive the System Telemetry.
Illustration 8 g01003470
When the PC connects, click on "Enter Password" (13) in the Menu Bar.The window that is illustrated above will open.
Enter the username and enter the password.
Click on "OK" Button.After the Password has been entered, the Menu Option will Change.The Menu bar will contain a "Calibrate" option.Note: The vacuum for the Flywheel needs to be less than 58 mTorr before the system can start this calibration.
Illustration 9 g00840232
Click "Calibrate" on the drop-down menu.
Select "AC Voltages".The following events will occur.
The input contactor "K1" closes.
The output contactor "K2" closes.
The Static Switch turns on.
The DC Bus Voltage rises.
The "Calibration of a Channel" window opens. Refer to illustration 9.
Click on "View Status" button.Another "Calibration Group Status" window will open.Note: Drag the "Calibration Group Status" window aside if the view of the "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"