APC SU043 Datasheet download pdf (Page 21)

APC Redundant Switch: Installation and Operation Manual 17

Operation

Front panel

programmable

settings

The following programmable settings are accessible using

controls located on the Redundant Switch front panel.

Function Select LED Indicator.

The three green Function

Select

LED

s 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:

Source Sensitivity and Transfer Voltage.

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.

LED Display Status of Source

Bright Source is selected.

Dim

Source is

, but not

selected.

Off Source is not

One

LED

is flashing once per

second, and the other

LED

is off

Both AC sources are out of

tolerance.

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APC SU043 Datasheet Page 21

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