120
UPS 675-1100 kVA 3..4x(225-275) kVA
1029052
User’s and Installation Guide
Revision 008
7.4.8 Start Variable Module Management System High Alert mode from
the bypass command menu
For instructions, see Section 7.3.10 “Start Variable Module Management System High Alert mode from
the bypass command menu” on page 109.
7.4.9 Starting the UPS UPMs
To start the power modules without transferring the critical load to Normal mode:
1.
Unfasten the front door latches and swing the doors open on all of the UPSs (see Figure 4-2 on
page 33).
2.
If the UPSs contain input breakers (CB1), verify that all input breakers are open.
3.
Close all UPS input feeder circuit breakers.
4.
If the UPSs contain input breakers (CB1), close all input breakers.
5.
Close all UPS Bypass input feeder circuit breakers.
6.
Close the doors and secure the latches.
7.
Observe the UPS control panel displays becoming active, indicating logic power.
8.
On any UPS, press the CONTROLS pushbutton on the main menu bar. The System Status screen
is displayed.
9.
On the System Status screen, verify the UPS status is
SHUTDOWN
and the UPM status is
OFFLINE
.
10. Verify no alarms are active.
11. On the System Status screen, select the
UPM
command. The UPS Control Command screen is
displayed.
12. On the UPS Control Command screen, select the
UPM 1
command.
13. Press the CONTROLS pushbutton on the UPS Control Command menu bar. The UPM 1 Control
Command screen is displayed.
14. On the UPM 1 Control Command screen, select
UPM ON
.
15. Press the SELECT pushbutton on the UPM 1 Command menu bar.
16. Verify the following messages display sequentially on the UPM status line:
DC STARTING, CHARGER OFF
INVERTER STARTING
INVERTER SYNCING
READY
The UPM 1 rectifier and inverter turn on.
If the Inherent Redundancy option is enabled, a loss of redundancy alarm will be issued. Silence
the alarm and continue to Step 17.
17. Repeat Steps 12 through 15 selecting
UPM 2
to start UPM 2.
18. Verify the following messages display sequentially on the UPM status line:
DC STARTING, CHARGER OFF
INVERTER STARTING
INVERTER SYNCING
READY
The UPM 2 rectifier and inverter turn on.
19. If the UPS is a equipped with a field upgrade UPM, repeat Steps 12 through 15 selecting
UPM 4
to
start UPM 4.
20. Verify the following messages display sequentially on the UPM status line:
DC STARTING, CHARGER OFF
INVERTER STARTING
INVERTER SYNCING
READY
The UPM 4 rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready
to transfer to the Normal mode and supply the critical load.
21. Repeat Steps 1 through 20 for each UPS in the distributed bypass system.
