American Power Conversion Redundant Switch operation manual LED Display Status of Source

Source Sensitivity and Transfer Voltage.

		Operation
Front panel	The following programmable settings are accessible using
programmable	controls located on the Redundant Switch front panel.
settings	Function Select LED Indicator. The three green Function
	Select LEDs indicate which user programmable parameter is
	selected for status display or modification. Use the left
	selection button to cycle through the five configurable items
	defined in “Controls, LEDs, and ports on the front panel” on
	page 15.
	Function Status LED Indicator. The green Function Status
	LED indicates the state of the selected user programmable
	function. Use the Select button to cycle among the choices.
	AC Source LED Indicator. The green online LED indicates
	the line quality and selection status of each source:

LED Display	Status of Source
Bright	Source is selected.
Dim	Source is OK, but not
	selected.
Off	Source is not OK.
One LED is flashing once per	Both AC sources are out of
second, and the other LED is off	tolerance.

APC recommends

that you do not change these settings, which are correct for most conditions. See “Controls, LEDs, and ports on the front panel” on page 15.

APC Redundant Switch: Installation and Operation Manual 17