1027212
UPS 225 - 275 kVA/300kVAPF0.8
101
Revision E
User’s and Installation Guide
NOTE
To transfer to Normal mode after starting individual UPMs, follow the procedure in Section
7.4.12.
7.4.10 Starting a single UPM
To start a single UPM:
1.
Unfasten the front door latch and swing the door open (see Figure 4-2 on page 26).
2.
If the UPS contains input breaker CB1, verify that input breaker CB1 is open.
3.
Close the UPS input feeder circuit breaker.
4.
If the UPSs contain input breakers (CB1), close all input breakers.
5.
Close the UPS Bypass input feeder circuit breaker.
6.
Close the door and secure the latch.
7.
Observe the UPS control panel becoming active, indicating logic power.
8.
Press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.
On the System Status screen, the UPS status and the UPM status should indicate
SHUTDOWN
.
9.
Verify no alarms are active.
10. On the System Status screen, select the UPM command. The UPS Control Command screen is
displayed.
11. On the UPS Control Command screen, select the UPM to start.
12. Press the CONTROLS pushbutton on the UPS Control Command menu bar. The UPM Control
Command screen is displayed.
13. On the UPM Control Command screen, select
UPM ON
.
14. Press the SELECT pushbutton on the UPM Command menu bar.
15. Verify the following messages display sequentially on the UPM status line:
DC STARTING, CHARGER OFF
INVERTER STARTING
INVERTER SYNCING
READY
The UPM rectifier and inverter turn on.
16. To transfer the UPM to Normal mode, press the CONTROLS pushbutton on the UPS Control
Command menu bar. The UPM Control Command screen is displayed.
17. On the UPM Control Command screen, select
UPM GO TO NORMAL
.
18. Press the SELECT pushbutton on the UPM Command menu bar.
The UPM transfers to Normal mode. The UPM status indicates
ONLINE
.
7.4.11 Transfer from Normal to Bypass mode
To transfer the critical load to Bypass mode:
CAUTION
In Bypass mode, the critical load is not protected from commercial power interruptions and
abnormalities.
1.
On any UPS, press the CONTROLS pushbutton on the main menu bar. The System Status screen
is displayed.
2.
On the System Status screen, select the
BYPASS
command.
