Eaton 93PM Installation Guide Page 71

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P-164000249 30-200 kW 63
Revision 2 User's and Installation Guide
1.
Press the lock button in the upper right corner of the screen.
2. Type your passcode and press OK.
3. You are signed in. Press Continue to return to the previous screen.
There are three attempts to input the password. If an incorrect password is given more than three
times, you need to wait for 30 minutes before trying again.
To modify the user settings, you need to enter level 2 password.
For the default passwords, see Chapter 11 APPENDIX A: User settings on page 84.
6.4 System control instructions
6.4.1 Starting the UPS system in Double conversion mode
The UPS system can consist of a single UPS or several parallel UPSs. UPSs with their MOB open are
not considered as part of the system.
To start the UPS system:
1. Unfasten the front door latch and swing the door open.
2. Verify that rectifier input switches are closed if included inside the UPS system, and verify that
battery breaker is closed, and close the front door.
3. Close the UPS input feeder circuit breaker.
4. Close the UPS bypass input feeder circuit breaker.
5. Observe the UPS control panel display becoming active, indicating logic power.
Repeat steps 1-5 for each individual UPS in the system.
6. Press the Controls button in the main menu. The System Controls screen appears.
7. On the System Controls screen, the system status should indicate SHUTDOWN.
8. Press the Go online button on the System Controls screen. If Auto Bypass is enabled (factory
default), the critical load is immediately supplied by the bypass source, in Bypass mode, until
the inverter turns on and the UPS transfers to double conversion mode. The status indicator on
the UPS control panel indicates the UPS is in Bypass mode. If auto bypass is not enabled, the
UPS output remains off until the UPS system transfers to double conversion mode.
9. Observe the following messages appear sequentially on the System Controls screen:
STARTING
ONLINE
The rectifier and inverter turn on. The DC voltage continues to ramp up to full voltage. Once the
DC link reaches full voltage, and the battery breaker is closed, the UPS output relay K3 closes
and the static switch turns off. Power is now supplied to the Critical load in double conversion
mode. It takes approximately 20 seconds for the UPS system to achieve double conversion
mode.
10. The UPS system is now operating in double conversion mode and the NORMAL status
indicator is illuminated in all UPSs in the system.
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