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94 Operation
UPS Module Start-Up
When a UPS module has been shut down for any reason, use this procedure to start-up the UPS module to pro-
vide filtered, reliable power to the critical bus. This procedure gives step-by-step instructions for controls to
operate and conditions to observe. Your present situation could be initial start-up or recovering from input power
failure, battery shutdown, maintenance shutdown, or an emergency shutdown.
Perform this module start-up procedure at each module in your UPS system until all required modules are on-
line.
Step 1. Before you apply power to the UPS module, determine the position of the following circuit breakers and
switches:
a. Rectifier Input Breaker (RIB) - If this external circuit breaker is closed, you already have power to the
UPS cabinet and possibly power to the controls. If this breaker is closed, leave it closed. If it is open,
leave it open until you are ready to apply power to the UPS cabinet.
b. Input Circuit Breaker (CB1) - Verify that this breaker on the front of the UPS module cabinet
(Figure 8) is in the OFF position.
c. Module Battery Disconnect (MBD) - Verify that this external breaker is open or tripped.
d. Module Output Circuit Breaker (CB2) - Verify that this breaker on the front of the UPS module
cabinet (Figure 8) is in the OFF position.
e. Control Power - This manually operated switch (Figure 8) will be in the ON position unless you are
recovering from a maintenance shutdown. If this switch is OFF, leave it OFF until you are ready to
apply power to the UPS controls.
Power must be provided to the UPS module controls so you can use the LCD display and so the system logic can
perform its control functions. Note that you can use the LCD display to monitor UPS status, even when the UPS
module is not on-line. If the LCD display is operating, you already have Control Power. This will be the usual
condition, unless you are recovering from a maintenance shutdown.
Step 2. If the LCD screen is not operating, energize Control Power by operating the following two controls:
a. Close the Rectifier Input Breaker (RIB), which is outside the UPS cabinet. This will provide power to
the UPS cabinet but not to any UPS components.
b. Open the UPS cabinet door and close the Control Disconnect fuseholders to turn the Control Power ON.
See Figure 8. Close the UPS cabinet door.
Press the Select pad on the UPS module to put the Master Menu on the LCD display. Move the highlighted cur-
sor to Start-Up Procedures (use the Upand Down pads). Press the Select pad to display the Start-Up Procedures
screen. Return to this screen whenever you need to see the start-up instructions.
On the LCD display, select System Configuration from the Master Menu. Verify that all of the information con-
tained in the System Configuration screen is correct. When the data is correct, press the Select pad until the dis-
play returns to the Master Menu.
CAUTION
If you are recovering from a module shutdown for maintenance procedures,
verify that all of the UPS system doors are closed and latched, AU test
equipment must be removed from the system. AU electrical connections must be
secure.
NOTE
Wait two minutes after applying Control Power before you operate any other UPS
module controls.