DualLite LSN - System Testing, Diagnostics, and Alarms

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202. System Self-Diagnostics
Self-testing/self-diagnosticelectronicsperformcontinuoustestingofsubsystems,insuringperformancetoprescribed
operating parameters. Operation outside of prescribed limits or system malfunctions will result in an alarm indication
onthesystem’suserinterfacedisplaypanel.Dependingonthetypeofalert,thepanelalarmindicationmaybevisual
or audiovisual.
User-programmable discharge tests are automatically performed on a monthly and annual basis. Date, time and
durationofthesetestscanbeprogrammedtomeetstate,localauthorityandindividualrequirements.
All testing events are automatically logged in memory and can be displayed on the user interface panel.
203. System Auto Testing
The LSN inverter system automatically performs three sophisticated, microprocessor-controlled system discharge
tests;aweeklytest,amonthlytestandanannualtest.Thefollowingparametersaffectthesetests:
Weekly test Monthly Test Annual Test
•Schedule(264) •Timeofdayformonthlytest(73) •Timeofdayforannualtest(185)
 •Dateformonthlytest(127) •Dateforannualtest(184)
 •Monthlytestduration(129) •Annualtestduration(129)
 •Monthlyrescheduleinterval(183) •Annualrescheduleinterval(186)
203.1 Weekly Test
Everyweek(atatimeanddatespeciedinparameter264)thesystemwillautomaticallyoperatetheinverterforone
minute. During this test, the system will monitor inverter output and connected load. The unit automatically records
the results of the test in parameter 26, which can be displayed from the user interface panel.
203.2 Monthly Test
Everymonth(orattheintervalspeciedinparameter183)theLSNInverterSystemautomaticallyperformsa
discharge test to check battery capacity and emergency inverter operation. The duration of the monthly test cycle is
controlled by parameter 129, set at the factory for 5 minutes. The unit automatically records the results of the test in
parameter 26, which can be displayed from the user interface panel.
203.4 Annual Test
Onceayear,theunitautomaticallyperformsabatteryexercisecycle/dischargetestbyrunningtheunitinemergency
mode for 90 minutes. It is recommended that it be scheduled at a time when the area protected by the LSN system
will be unoccupied for a full 48 hours to allow the batteries time to recover to full capacity. The date on which the
annual test takes place is stored in parameter 184 .
203.4 Extended Power Outages
During extended power outages, the LSN inverter system will provide power to all connected loads for its full rated
discharge time.
NOTE:DuringemergencyoperationoftheLSNsystem,parameter9allowstheusertodeterminehowmanyminutes
ofruntimeremaininthenormaldischargeperiod.Atasetnumberofminutespriortotheendoftheruntime(factory
defaultsettingis30minutes),theunitwillsounda“LowRuntime”alarm.Theunitmayalsosimultaneouslysounda
“NearLowBattery”alarm.Wheneitherofthesealarmsoccur,anorderlyshutdownofanynon-emergencyequipment
that may be connected to the system should be conducted in order to allow the inverter to operate critical emergency
equipmentforalongerperiodoftime.
Following the normal discharge period, the unit will continue to operate normally until battery capacity reaches a pre-
set disconnect limit. At this point, the inverter will automatically disconnect inverter AC output power to the load. The
unit’selectroniccontrolswillremainpoweredbythesystembatteriesuntilthebatteriesreachasecondpre-setlow
imit at which point the unit will shut down completely to prevent deep discharge damage to the unit batteries.