Led

Operation

continued
Item	Description	Meaning/Function
5	Utility LED ( )	Flashing Red—Utility input voltage is outside the +20% to -30%
		configured nominal range.
		Green—Utility voltage is present and output is on, or utility voltage has
		returned to the voltage range for which the UPS has been configured
		(UPS is supplying utility power and the audible alarm should be reset).
		Flashing Green—Utility voltage is present and the UPS is in Standby
		mode. Output is off. Batteries charge if needed.
6	Overload LED	Red—UPS load exceeds maximum power available.
7	76% to 100% load	Green—UPS load approximately 76% to 100% of maximum power.
8	51% to 75% load	Green—UPS load approximately 51% to 75% of maximum power.
9	26% to 50% load	Green—UPS load approximately 26% to 50% of maximum power.
10	0% to 25% load	Green—UPS load approximately 0% to 25% of maximum power.
11	Configure Mode On	Green—UPS is in Configure mode (seen when front bezel removed).
	LED
12	Configure button	Places the UPS in Configure mode (seen when front bezel removed).
13	Test/Alarm Reset	Resets alarms or initiates self-tests.
	button
14	Standby button	Places the UPS in Standby mode (turns output load segments off).
15	On button	Starts UPS powering the load.

Modes of Operation

The UPS has three modes of operation:

—No power is available at the UPS output receptacles.

—The UPS charges the batteries as necessary.

•Operate Mode

—Power is available at the UPS output receptacles.

—The UPS charges the batteries as necessary.

—Power is available at the UPS output receptacles.

—The UPS charges the batteries as necessary.

—The UPS configuration can be updated.

2-2	HP Uninterruptible Power System R1500 XR Models User Guide