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.

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.

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.

NOTE

Wait two minutes after applying Control Power before you operate any other UPS module controls.

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 Up and 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.

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UPS Module Start-Up

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