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7
Optional Connection
Thefollowingconnections areoptional.YourUPS systemwillfunction properlywithout
theseconnections.
USB and RS-232 Serial Communication Connection
Use the included USB cable
1a
 and/or RS-232 DB9 serial cable
1b
 to connect the
communicationportofyourcomputertothecommunicationportofyourUPS.Installon
your computer the Tripp Lite PowerAlert Software appropriate to your computer's
operatingsystem.ConsultyourPowerAlertmanualformoreinformation.
Dry Contact Note: Dry contact communications are simple, but some knowledge of
electronicsisnecessarytoconfigurethem.TheDB9port'spinassignmentsareshownin
diagram
1c
.IftheUPSbatteryislow,theUPSsendsasignalbybridgingpins1and5.
Ifutilitypowerfails,theUPSsendsasignalbybridgingpins8and5.ToshuttheUPS
downremotely,shortpin3andpin9foratleast3.8seconds.
EPO Port Connection
Thisoptionalfeatureisonlyforthoseapplicationsthatrequireconnectiontoafacility’s
EmergencyPowerOff(EPO)circuit.WhentheUPSisconnectedtothiscircuit,itenables
emergencyshutdownoftheUPS’sinverterandinhibitstransfertointernalbypass.Using
the cable provided, connect the EPO port of your UPS (see
2a
) to a user-supplied
normallyclosedornormallyopenswitchaccordingtothecircuitdiagram(see
2b
).
Note:
1. If using a cable other than what is supplied, the cable should not exceed 350 feet
or have a resistance of greater than 10 ohms.
2. If a non-latching EPO switch is used, the EPO must be held for a minimum of 1
second. This does not apply to a latching EPO switch.
CAUTION: The EPO port is not a phone line surge suppressor; do not connect a
phone line to this port.
UPSUnitStatewhenassertingEPOwithAClinepresent:
LEDs Output Fans Serial SNMP USB LCD Screen
OFF OFF ON ON ON ON
“Emergency
Stop”
TorestarttheUPSunitafterassertingEPOwithAClinepresent:
Option 1:
1.VerifythattheEPOassertionhasbeenremovedorcleared.
2.PressONbuttonuntilunitdisplays"STANDBY"(approx.1second).
3.PressONbuttonagainandUPSoutputwillturnbackonafteritcompletes
diagnostics.
Option 2:
1.VerifythattheEPOassertionhasbeenremovedorcleared.
2.RemoveAClinepowertotheUPSunit.
3.ReapplyAClinepower.NowtheUPSwillstartbackupinnormaloperationmode.
UPSUnitStatewhenassertingEPOwithoutAClinepower:
LEDs Output Fans Serial SNMP USB LCD Screen
OFF OFF OFF OFF OFF OFF
“Emergency
Stop”
TorestarttheUPSunitafterassertingEPOwithoutAClinepower:
1.VerifythattheEPOassertionhasbeenremovedorcleared.
2.ReapplyAClinepowertotheUPSunit.NowtheUPSwillstartbackupinnormal
operation mode.
1
2
1a
1b
4-5
2a
2b EPO Pin Assignment
1c
201102170 932611.indd 7 3/30/2011 10:22:12 AM