108
UPS 225 - 275 kVA/300kVAPF0.8
1027212
User’s and Installation Guide
Revision E
7.4.25 Single UPM restart
To restart a single UPM from a shutdown state:
1.
Press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.
2.
On the System Status screen, select the UPM command. The UPS Control Command screen is
displayed.
3.
On the UPS Control Command screen, select the UPM to restart.
4.
Press the CONTROLS pushbutton on the UPS Control Command menu bar. The UPM Control
Command screen is displayed.
5.
On the UPM Control Command screen, select
UPM ON
.
6.
Press the SELECT pushbutton on the UPM Command menu bar.
7.
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.
8.
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.
9.
On the UPM Control Command screen, select
UPM GO TO NORMAL
.
10. Press the SELECT pushbutton on the UPM Command menu bar.
The UPM transfers to Normal mode. The UPM status indicates
ONLINE
.
7.4.26 Single UPS shutdown using load off
NOTE
To shut down a single UPS, MOBs with dual auxiliary contacts must be installed and connected
according to the procedure in Section 5.2 on page 47.
To shut down a single UPS:
1.
Open the MOB for the UPS being shut down.
2.
On the UPS to shut down, press the CONTROLS pushbutton on the main menu bar. The System
Status screen is displayed.
3.
On the System Status screen, select the
BYPASS
command.
4.
Press the CONTROLS pushbutton on the System Status menu bar. The Bypass Control Command
screen is displayed.
5.
On the Bypass Control Command screen, select
GO TO BYPASS
. If the MOB of the UPS is not
open, do not bypass.
6.
Press the SELECT pushbutton on the Bypass Command menu bar.
The UPS being shut down transfer to Bypass mode.
The BYPASS status indicator is illuminated. The Bypass status indicates
ON
. The UPM status indi-
cates
READY
. The power module remains on.
NOTE
Load Off will turn off only the UPS being shut down. The remaining UPSs will remain online
suppling power to the critical load.
