Delta SI 5000

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8 Diagnostics and data evaluation
8.1 Malfunctionrectication
Thesolarinverterisprovidedwithanautomaticdiagnosticssystemwhichindependentlyidenties
certainfaultsandwhichcanmakethemvisibleexternallyonthedisplay.
Troubleshootingintheeld
Inprinciple,itisalwaysworthattemptingaresetbyreinitialisingthesolarinverterwheneveranerror
messageappearsonthedisplay.
Toresetthedevice,proceedasfollows:
1.Isolatethesolarinverterfromthemains(openautomaticcutouts).
2.SwitchoffDCmainswitch.
3.Waittime:approx.1minute.
4.SwitchDCmainswitchbackon.
5.Switchinmains(closeautomaticcutouts).
(Intheeld,therststepistoscanforpotentialfaultcausesthatcouldbepickedupbythesolar
inverterandresultintripping.)
Variouskeyparameterscanbescannedviathedisplay,therebyenablingconclusionstobedrawn
aboutpotentialfaultcauses.
Current values in the N menu
ACVoltage-> Displayofcurrentoutputvoltage-> Voltagelimitingvalues
ACFrequency->Displayofcurrentmainsfrequency->Frequencylimitingvalues
SolarVoltage->Displayofcurrentsolarcellvoltage->Switch-inthreshold
8.2 Display messages
LEDStatus
Display
message
Cause Elimination
green:<on>
red:<on>
yellow:<on>
-
Displaycommunication
faulty.
-Ifthefaultpersistsafterthedevicehas
beenreset,pleaseinformyourservice
technician.
green:<off>
red:<off>
yellow:<on>
ACfrequency
failure
Mainsfrequencyover-
shootingorundershooting
speciedlimitrange.
-Checkthemainsfrequencyviathe
displayintheNmenu.
green:<off>
red:<off>
yellow:<on>
ACvoltage
failure
Mainsvoltageovershoo-
tingorundershooting
speciedlimitrange.
-Checkthemainsvoltageviathedisplayin
theNmenu.
-Ifnovoltagepresent,checkmainsauto-
maticcutouts.
green:<off>
red:<off>
yellow:<on>
ACrelay
failure
Oneoftheanti-islanding
protectionoutputrelaysis
faulty/defective.
-Thesolarinverterisdefective.
-Returnthedevice.
green:<ashes>
red:<off>
yellow:<off>
Calibration
ongoing
Checkofinternalsettings. Normalfunctionbeforeinputmode.
green:<off>
red:<off>
yellow:<on>
DCinjection
failure
DCcomponentofinput-
sidealternatingcurrentis
toohigh.
-Ifthefaultpersistsafterthedevicehas
beenreset,pleaseinformyourservice
technician.