Sunway NT 6000, NT 2600, NT 4000 user manual Fault diagnosis Fault display Causes, Udc

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3.4Fault diagnosis

Fault display

Causes

Remedies

Overtemperature The maximum permissible ambient temperature of 40°C has been exceeded.

The necessary air circulation was not taken into account during installation.

Objects have been stored on the heat sink, impeding free convection.

The installation location is not suitable. Please find another installation location.

Clean the solar inverter if dirt is impeding the cooling unit.

Remove the objects.

UDC

The maximum DC voltage

Check the dimensioning of your

Overvoltage

has been exceeded.

PV generator.

 

Too many modules are con- Reduce the number of modules and

 

nected in series.

re-commission the system.

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Contents Solar Inverters NT 2600, NT 4000 Manual180 mm 300 mm 510 mm Information on installation List of Contents General informationInformation on operation CommissioningAppendix General information General safety information Opening the unit Scope of supply Inspecting the deliveryPage SensorEN Mains fuse Energy meter PV generator switchStandard components of a PV system Standard components of the PV systemProtection concept Information on installation Mechanical safety Information on cleaning Warm Air 300 mm 150 mm Cool · Protection from damp and foreign bodies · Thermal interactionFig. Inlets on the unit underside Electrical connection and cable entryGrid connection Three-phase grid connection distributed over three unitsPage · Connection PV generator connection · PreparationImportant information Page Communication connections · Connection Connecting the sensors · Optional irradiation sensor Page Switching the solar inverter on and off · Switching on · Switching off Configurations Plus Minus ESC/CUR UP/DWN Save Structure and menu levels for configurationLanguage LCD Contrast Software Information on operation Line DisplayData memory Sunways NT Monitor software Initialising the remote modem Connection to PC via RS Connection and circuitry optionsConnection to modem via RS Individual PV system with modem for remote inquiryStripped length 11 mm Jumper JP400 see above Connection to PC via RS 485/RSInverter to299 Connection to modem via RS 485/RS Cable type a Female Configuring the interface cablesPole Signal cables Cable type B Connector To modem Pole Signal cablesCable type C Connector To modem Pole ConverterLocating jumper JP400 in the Sunways Solar Inverter · 15 minute values · Fault dataSunways NT Monitor data acquisition · Online values · Monthly values· Setting menu Operation of Sunways NT Monitor· Data menu · Help menu Line Error UAC1 Undervoltage Line Error UAC3 OvervoltageLine Error UAC3 Undervoltage Line Error UAC1 OvervoltageLine Error UDC Overvoltage Line Error AFI Residual currentLine Error Temp Overtemperature UDC Fault diagnosis Fault display CausesUAC3 Fault display CausesAFI · Conditions · Warranty period· Exclusion of liability Appendix Designation Description Subject and abbreviation indexDesignation · Solar inverter with Heric technology Functional principle and explanations· DC and AC filters · Differential measurement· Sensor interface · Microcontroller· LCD display · RS 485 and RS 232 interfaces· MPP control PV-GENERATOR Block diagramAFI Solar Inverter NT Technical data ModelSolar Inverter NT Page Page Page Page 146 147 148 149 Registered trademarks General exclusion of liabilityPage Sunways AG Photovoltaic Technology Macairestraße 3