Emerson 115-120, 15-90KVA, 115-208, 115-600V Pop-Up Windows, UPS Help Screen, Screen Saver Window

This operation leads to output shutdown, Confirm or cancel

Transfer with Interrupt, please confirm or cancel

Operator Control and Display Panel

9.11.3UPS Help Screen

Press the HELP key below the LCD to display the Help window. (Press the HELP key again to exit the Help window.)

9.11.4Screen Saver Window

If there has been no interaction with the Liebert® APM™’s LCD for 2 minutes, the screen saver window appears. It remains on the LCD for 2 minutes, then the screen will go dark. The LCD will become active again when any key is pressed.

Figure 62 Screen saver window

Single		APM 090kVA 0 2 :1 7 : 4 7
EMERSON™
	Network Power
Press any key back to main menu
F1	F2	F3	F4	HELP
F1	F2	F3	F4	HELP

9.12Pop-Up Windows

Pop-up prompt windows appear when the user must confirm a choice or perform an operation. This section describes the pop-up windows. Some operations require entering a password; refer to 9.12.7 - Enter Control Password for help.

9.12.1 From Bypass to Inverter Mode With Power Interruption

If the bypass voltage or frequency exceeds the synchronized range and utility voltage or frequency is normal, the inverter cannot be in synchronization with the bypass, and the output can only transfer to inverter after an interruption of about 15ms when the user presses the INVERTER ON button. Before transferring, the system will let the

user confirm whether the interruption can be accepted, as shown at right. If the bypass voltage returns to normal before the user makes confirmation, the UPS will transfer to inverter mode automatically. At the same time, the prompt window will close.

9.12.2 From Inverter to Bypass Mode With Interruption

If the bypass voltage or frequency exceeds the synchronized range and the UPS is in inverter mode, the system must let the user to confirm and accept the power interruption danger before pressing the INVERTER OFF button to shut down the output of the inverter. The user can also cancel the shutdown operation, as shown at right. If the bypass voltage returns to normal before the user makes the

confirmation, the UPS will transfer to bypass operation mode automatically, and at the same time the prompt window will disappear soon.

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