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Overview
Smart Distribution Panel with ATS 17
ATS monitoring unit
This port connects to the Source 2 volt-sensing (S2 PT)
circuit board, Source 1 volt-sensing (S1 PT) circuit
board, Source 1 current transformers, and distribution
panel volt-sensing output circuit board.
This port connects to the ATS interface circuit board.
The display port (RJ-45) connects the monitoring unit
to the display interface.
The power LED indicates whether the monitoring unit
is receiving power.
This console port is used to configure items relating to
servicing and for communicating with the generator
(see item 4 on page 13). Use this port (DB-9) to connect
a laptop computer to the monitoring unit using an
appropriate communication cable (APC part number
940-0103).
EPO DIP switches configure the EPO input for the
type of EPO switch that is connected—Normally Open
(NO) or Normally Closed (NC).
When the EPO Arm/Test rocker is in the Test
position, engaging the EPO switch will not cause the
load to be powered off. When the rocker is in the
Armed position, engaging the EPO switch turns OFF
the ATS Source 1 and Source 2 switches and engages
the generator’s emergency stop button. When the EPO
switch is engaged, the ATS Not in Automatic LED is
lit. See page 64 for more information on testing the
EPO switch.
The EPO Armed LED is green when the rocker is in the Armed position. The LED is dark when the
rocker is in the Test position.
The EPO Tripped LED is red when the EPO switch is engaged (the EPO button is pressed),
regardless of the state of the EPO Arm/Test rocker.
The reset button resets the network processor; it does not reset the ATS or the monitoring unit.
This network port connects to the surge-protected ethernet port on the user connection plate. (See
page 16 information on the surge-protected ethernet port.)
This port connects to the ATS interface circuit board.
The optional User/EPO Contacts port is connected to the User Connection Plate in the roof of the
ATS. The port allows for relay outputs (4), input contacts (4), and an EPO input (1). See page 16 for
more information.