Filter
Top Products
Operation
28
Second Scenario
Power is supplied to the UPS and the UPS is supplying the load. (Upstream breakers are closed).
The UPS should be showing either the SYSTEM RATINGS screen or the Mimic display. If the SYS-
TEM RATINGS screen is showing, use the arrow keys to select SAVE & EXIT and push SELECT.
This will advance you to the USER SETTINGS screen. The USER SETTINGS have been pre-set at
the factory. However, they may be customized for your site. See 3.3.5 - Configuration Screens for
detail information on configuration screens. You can change these configurations at any time. Use the
arrow keys to move the cursor to SAVE & EXIT and push SELECT. This will move you to the MIMIC
screen. Check the MIMIC screen to make sure the static switch contactors are closed. The screen
should look like Figure 22. If the Static Switch Contactors are open (Figure 24), transferring to the
NORMAL position will DISCONNECT THE LOAD. To close the Static Switch contactors, locate the
Rotary Switch located on the inside of the cabinet on the lower right side as you face the cabinet. Turn
the Rotary Switch to the SERVICE position. Wait for 10 seconds. Return the Rotary Switch to the
BYPASS position. This should reset the Static Switch contactors to the closed position and the
MIMIC panel should look like Figure 22. If the Static Switch contactors are closed, then the load is
supported by Static Switch and you are clear to move the Rotary Switch to the NORMAL position and
move on to Auto Startup on page 28. If the Static Switch contactors are not closed, repeat the above
procedure. If this still does not close the static switch, contact Liebert Global Services for assistance.
Figure 23 Startup / shutdown procedures screen
Auto Startup
Normally, the Operator will choose to start the system automatically for the sake of convenience. To
begin the auto start-up sequence, select MAIN MENU from the MIMIC screen. This will bring up the
MAIN MENU Screen (Figure 9). From this screen select STARTUP/SHUTDOWN. This will take you
to the STARTUP/SHUTDOWN screen, Figure 23. Move the cursor to AUTO STARTUP and press
SELECT. AUTO STARTUP mode starts the rectifier and inverter, and transfers the load to the
inverter. The operator needs only perform one action when prompted: CLOSE MANUAL BATTERY
BREAKER. This action must be performed promptly (within 90 seconds). Otherwise the startup oper-
ation is aborted and an error message will appear stating: UPS OPERATION CANNOT BE PER-
FORMED. Although no further operator interaction is required, the Operator has the option to abort
the Auto sequence.
Once the Operator has manually closed the Battery Breaker, the UPS automatically becomes fully
operational, at which point the Mimic Display Screen is displayed showing Normal Power Flow. See
Figure 10.
!
CAUTION
If on Static Bypass, make sure the Static Switch is closed (Figure 22) before turning the
Rotary Switch to normal. If the Static Switch is not closed and the Rotary Switch is turned to
the normal position, the load will be disconnected.
STARTUP / SHUTDOWN
MANUAL STARTUP
USER SHUTDOWN
EXIT