UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Caterpillar

The Flywheel Cabinet panels should be in place. The doors should be closed.

1. Place the Flywheel Cabinet keyswitch to the "Spindown/Offline" position

2. Connect a PC to the UPS/SMS or MMU.

   Refer to Systems Operation, Testing and Adjusting, RENR7654, "Personal Computer to UPS Connection".

3. Place the system in Bypass mode.

   Refer to Systems Operation, Testing and Adjusting, RENR7654, "Transfer to Bypass Mode".

4. Verify that vacuum is in the green zone of the telemetry tile.

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Illustration 1	g01320392

5. Verify that temperatures are reasonable considering the ambient conditions and the state of the UPS/SMS or MMU.

   Note: Temperatures may be slightly out of range depending on environmental conditions.

   The fine calibration for the Rotor Position Sensor should occur automatically.

6. Make sure that the fine calibration occurs.

7. If the fine calibration does not occur, Select the "RPS Advance Setpoint" calibration menu item again in order to start the fine calibration.

   Note: A message will appear in the event log when the flywheel gets to speed.

8. Verify flywheel RPM is 0.

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Illustration 2	g01320393

9. Select "A: RPS Advance Setpoint".

   The following process will occur in the order listed:

   • System preheats if cold

   • System starts motoring

   • System starts calibrate and then sends message to text window.

   • System develops message when finished with rough calibration.

10. Turn the Flywheel Cabinet keyswitch to the online position.

    The tachometer shows an increase in the RPM. The system completes calibration in 30 minutes to an hour.

11. Repeat for Flywheel B.