Calibration Procedure for the AC Voltage
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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.
| Required Tools | |
| Part Number | Description |
| 146-4080 | Digital Multimeter |
- Bring the RPM of the system to zero.
- Place the keyswitch in the BYPASS position for the MMU that is being calibrated.
Note: In a Single-Module System, place the keyswitch in the BYPASS position on the System Cabinet.
Note: Proceed to step 6 for Single-Module Systems.
- Connect a PC to the Parallel Cabinet Interface Board that is located in the System Cabinet.
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Illustration 1 g01051091 (1) Switch - Rotate the switch (1) on the Parallel Cabinet Interface Board to the corresponding Multiple Module Unit.
Proceed to Step 7.
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Illustration 2 g00839256 (2) System I/O and Isolation Board Show/hide table
Illustration 3 g00840027 (3) Jumper "Jmp1" - 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.
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Illustration 4 g00840053 (4) Icon for UPS View - Run UPS View by double clicking over the icon (4) on your PC.
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Illustration 5 g01003395 Show/hide table
Illustration 6 g01003391 (6) "Direct Connect" Radio Button
(7) PC COM Port
(8) "Baud Rate" Setting
(9) "Detailed MMU telemetry" Setting
(10) "OK" Button
(6) "Direct Connect" Radio Button
(7) PC COM Port
(8) Setting for the Baud Rate
(9) "Detailed MMU telemetry" Setting
(10) "OK" Button - Click over the "PC Settings" in the Menu Bar. Refer to Illustration 5.
Click on "Connection Settings". The "Connection" window will open.
- Refer to Illustration 6. Click on the radio button that is for the "Direct Connect (serial)" (6).
- Select your PC COM Port for (7) this Serial Connection and set the Baud rate (8).
The radio button for "Detailed MMU Telemetry" (9) must be checked.
- Click on "OK" Button (10) in order to accept these settings.
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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.
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Illustration 8 g01003470 (13) "Enter Password" - 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.
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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" for "Voltage in Ph. AB".
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Illustration 10 g01087513 (14) Phase A terminal
(15) Phase B TerminalShow/hide table
Illustration 11 g00840319 Show/hide table
Illustration 12 g00840348 - Measure the input voltage from the terminal of phase A (14) to the terminal of phase B (15).
Reference: Refer to Illustration 10.
- Enter the value from step 23 in the "Enter Calibration Point" field.
- Click "OK".
The System will process the calibration. The system will automatically display "Enter Calibration Point" for the "Voltage in Ph. BC". The "Calibration Group Status" window will display "Calibration complete but not saved for Phase AB".
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Illustration 13 g01087520 (16) Phase C Terminal Show/hide table
Illustration 14 g00840385 - Measure the input voltage from the terminal of phase B (15) to the terminal of phase C (16).
Reference: Refer to Illustration 13.
- Enter the value from step 26 in the "Enter Calibration Point" field.
- Click on "OK".
The System will process the calibration again. The system will automatically prompt "Enter Calibration Point" for the "Voltage in Ph. BN". The "Calibration Group Status" window will display "Calibration complete but not saved for Phase BC".
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Illustration 15 g00840393 Show/hide table
Illustration 16 g01087545 (17) Neutral Terminal Note: Step 29 is for a three-phase 4-wire system.
- Measure the input voltage from the terminal of phase B (15) to neutral terminal (17).
Reference: Refer to Illustration 16.
Note: If the system is a 3-wire system, then Measure the AC voltage from the terminal of phase B (15) to the ground terminal.
- Enter the value from step 29 in the "Enter Calibration Point" field.
- Click "OK".
The System will process the calibration again. The system will automatically prompt "Enter Calibration Point" for the "Voltage in Ph. AB". The "Calibration Group Status" window will display "Calibration complete but not saved for Phase BN".
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Illustration 17 g00840407 - Click on the "Save" button that is on the "Calibration of a channel" window.
The noise from the input contactors and the output contactors that are opening can be heard. The Calibration ends. A "Flash reprogrammed OK" message appears. This indicates that the calibration has been successfully completed.
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Illustration 18 g01003513 - To end the calibration in UPS View, click on the "Connection" that is located on the Menu Bar.
- Select "Disconnect".
You will stop receiving the telemetry signal.
- Unplug the RS232 cable from the System I/O Isolation Board. Reinstall the back Sheet Metal.
- Close the doors for proper air flow into the System.
