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DisclaimersDisclaimersImportant NoticeCopyright SolarEdge Inc. All rights reserved.No part of this document may be reproduced, stored in a retrievalsystem or transmitted, in any form or by any means, electronic,mechanical, photographic, magnetic or otherwise, without the priorwritten permission of SolarEdge Inc.This document is solely for the use of SolarEdge customers andemployees.The material furnished in this document is believed to be accurateand reliable. However, SolarEdge assumes no responsibility for theuse of this material. SolarEdge reserves the right to make changes tothe material at any time and without notice. You may refer to theSolarEdge web site (www.solaredge.com) for the most updatedversion.All company and brand products and service names are trademarksor registered trademarks of their respective holders.Patent marking notice: http://www.solaredge.com/groups/patentThe general terms and conditions of purchase of SolarEdge productsshall apply.The content of these documents is continually reviewed andamended, where necessary. However, discrepancies cannot beexcluded. No guarantee is made for the completeness of thesedocuments.SolarEdge Key User Guide – MAN-01-00131-1.11

DisclaimersFCC ComplianceThis equipment has been tested and found to comply with FCC part15 subpart B Class A regulations. These limits are designed to providereasonable protection against harmful interference in a residentialinstallation. This equipment generates, uses, and can radiate radiofrequency energy and, if not installed and used in accordance withthe instructions, may cause harmful interference to radiocommunications. However, there is no guarantee that interferencewill not occur in a particular installation. If this equipment doescause harmful interference to radio or television reception, whichcan be determined by turning the equipment OFF and ON, you areencouraged to try to correct the interference by one or more of thefollowing measures: Reorient or relocate the receiving antenna. Connect the equipment into an outlet on a circuit differentfrom that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician forhelp.Increase the separation between the equipment and thereceiver and its antenna.Changes or modifications not expressly approved by the partyresponsible for compliance may void the user’s authority to operatethe equipment.2SolarEdge Key User Guide – MAN-01-00131-1.1

Table of ContentsTable of ContentsDisclaimers . 1Important Notice . 1FCC Compliance . 2Table of Contents . 3About This Guide . 4Support and Contact Information . 5Handling and Safety Instructions . 6Safety Symbols . 6Safety Instructions . 7Chapter 1: Introducing the SolarEdge Key . 8Chapter 2: Using the SolarEdge Key . 9The SolarEdge Key Interface . 9Before Using the SolarEdge Key . 10Connecting the SolarEdge Key to PV Strings . 11Disabling SafeDC . 12Enabling SafeDC . 13Appendix A: Errors and Troubleshooting . 15Appendix B: Technical Specifications . 17SolarEdge Key User Guide – MAN-01-00131-1.13

About This GuideAbout This GuideThis user guide is intended for Photovoltaic (PV) system owners,installers, technicians, maintainers and integrators who use theSolarEdge power harvesting system.This manual describes how to connect the SolarEdge Key to a PVstring and setup its modes of operation.This guide assumes that the SolarEdge power harvesting system isalready installed and commissioned. For additional informationabout how to install and commission the SolarEdge power harvestingsystem, refer to the relevant installation guide.This guide includes the following chapters: Chapter 1: Introducing the SolarEdge Key, page 8, describesthe SolarEdge Key functionality and connection. Chapter 2: Using the SolarEdge Key, page 9, describes theSolarEdge Key interfaces and usage. Appendix A: Errors and Troubleshooting, page 15, providesinformation about how to troubleshoot potential errors. Appendix B: Technical Specifications page 17, provides theelectrical and mechanical specifications of the SolarEdge key.For further information, datasheets and the most up-to-datecertifications for various products in different countries, please visitthe SolarEdge website: www.solaredge.com4SolarEdge Key User Guide – MAN-01-00131-1.1

Support and Contact InformationSupport and Contact InformationIf you have technical queries concerning our products, please contactus:US & Canada1877 360 [email protected] 49 .beItaly800 784 [email protected] Kingdom0800 028 1183Greece00800125574Israel 972 73 240-3118Japan 81.3.5530.9360Australia1800149229Worldwide 972 73 240-3118Fax 972 73 240-3117Before contact, make sure to have the following information readilyavailable: Inverter and power optimizer modelSerial number of the SolarEdge Key deviceThe error indicated on the SolarEdge Key screen (if exists).System configuration information, including the type andnumber of modules connected and the number and length ofstrings.SolarEdge Key User Guide – MAN-01-00131-1.15

Handling and Safety InstructionsHandling and Safety InstructionsDuring installation, testing and inspection adherence to all thehandling and safety instructions is mandatory.Safety SymbolsThe following safety symbols are used in this document. Familiarizeyourself with the symbols and their meaning before installing oroperating the system.WARNING!Denotes a hazard. It calls attention to a procedure that, if notcorrectly performed or adhered to, could result in injury or lossof life. Do not proceed beyond a warning note until theindicated conditions are fully understood and met.CAUTION:Denotes a hazard. It calls attention to a procedure that, if notcorrectly performed or adhered to, could result in damage ordestruction of the product. Do not proceed beyond a cautionsign until the indicated conditions are fully understood and met.NOTE:Denotes additional information about the current subject.IMPORTANT SAFETY FEATURE:Denotes information about safety issues.6SolarEdge Key User Guide – MAN-01-00131-1.1

Handling and Safety InstructionsSafety InstructionsWARNING!To avoid electrical shock disconnect electrical circuits beforeopening the SolarEdge Key case.CAUTION:This unit must be operated according to the manufacturer’sinstructions. If the equipment is used in a manner not specifiedby the manufacturer, the protection provided by the equipmentmay be impaired.CAUTION:The SolarEdge Key can only be connected to a single string ofPV Modules. Do not connect the SolarEdge Key to any maincircuits, such as the inverter; Safety & Monitoring Interface(SMI) or other equipment that is directly connected to maincircuits.NOTE:The following warning symbols appear on the SolarEdge Keyproduct label:SymbolWarningRisk of electric shock. Do not open the casewhen connecte d to electrical circuit.Read product instructions before useEquipment isolated by at least two insulationlayersNOTE:The SolarEdge Key is IP65 rated. The product should not besubmerged into water. For cleaning use a damp cloth or IPA.SolarEdge Key User Guide – MAN-01-00131-1.17

Chapter 1: Introducing the SolarEdge KeyChapter 1: Introducing theSolarEdge KeyThe SolarEdge Key is a service tool that is used to enable poweroptimizers to work with non-SolarEdge inverters without installingany additional hardware. In order to work with non-SolarEdgeinverters, power optimizers must support IndOP (IndependentOptimization); the part number of the power optimizer should startwith OPI or OPJ.All power optimizers provided by SolarEdge have the SafeDC feature enabled: When connected to a PV module, these poweroptimizers output a safe voltage of 1VDC until they are paired eitherwith a SolarEdge inverter, or with the SolarEdge Safety & MonitoringInterface (SMI), and until power production has started. Refer toSolarEdge Power Optimizers Installation Guide for more details.When connecting PV strings with power optimizers directly to a nonSolarEdge inverter without a Safety and Monitoring Interface, SafeDCmust be disabled before connecting the string to the inverter.The SolarEdge Key is used to configure power optimizers to one ofthe following modes of operation: SafeDC : When the power optimizer is connected to a PVmodule, its output voltage is limited to a safe voltage of 1V DCuntil the optimizer is connected and paired with SolarEdgeinverter or with SMI. When the SolarEdge inverter/SMI areoperating, the power optimizer’s output voltage raises above1V DC and the optimizer provides power. When the SolarEdgeInverter / SMI are turned off, the power optimizer’s outputvoltage is back to a safe voltage of 1V DC. SafeDC Disabled: When the power optimizer is connected to aPV module, its output voltage is limited to the open circuitvoltage (Voc) of the connected PV module.8SolarEdge Key User Guide – MAN-01-00131-1.1

Chapter 2: Using the SolarEdge KeyChapter 2: Using the SolarEdgeKeyThe SolarEdge Key InterfaceLCD displayDisplay buttonSafeDC Disable /Confirm buttonSafeDC Enable /Esc buttonON/OFF buttonConnection to stringFigure 1: SolarEdge Key interfaceSolarEdge Key User Guide – MAN-01-00131-1.19

Chapter 2: Using the SolarEdge Key LCD display – with 8 charactersON/OFF button – turns the unit ON and OFFMenu buttons - each with two functionalities , as described inthe following table:Button PressSafeDCEnable / EscDisplay ButtonSafeDCDisable /ConfirmShort Press(less than 1sec)EscToggle DisplayConfirmLong Press(more than 1 sec)Enable safetyvoltageN/ADisable safetyvoltageBefore Using the SolarEdge Key1Make sure the SolarEdge Key is not connected to a string.2Open the SolarEdge key back cover.3Insert three AA batteries (nominal voltage 1.5V; not supplied)into the battery compartment and close the cover.4Press the ON/OFF button ( ) to turn the SolarEdge Key ON. IfLOW BAT appears, replace batteries.5Press the ON/OFF button to turn the SolarEdge Key OFF. Themessage End appears on the LCD and then the SolarEdge Keyturns OFF.10SolarEdge Key User Guide – MAN-01-00131-1.1

Chapter 2: Using the SolarEdge KeyConnecting the SolarEdge Key to PVStrings1Connect the string cables to the two connectors at the bottomof the SolarEdge Key (see Figure 1).2Press the ON/OFF button. The string voltage appears on theLCD screen:Vo XXX.XFigure 2: SolarEdge Key connection3Short press the center button (Display Button) to togglebetween the following options:LCD DisplayDescriptionVo XXX.XThe string voltage measurementBat XXXXThe battery state: 4 bars ( ) - full;one bar ( ) - low#OP XXXXThe estimated number of power optimizersin the string. The screen initially starts as#OP ---- and updated after SafeDC state ischangedIf you do not press any button for five minutes, the SolarEdgekey shuts down automatically.SolarEdge Key User Guide – MAN-01-00131-1.111

Chapter 2: Using the SolarEdge KeyDisabling SafeDCWhen connecting power optimizers directly to a non-SolarEdgeinverter without a Safety and Monitoring Interface, disabling theSafeDC mode is required in order to reset the string beforeconnecting to the inverter.NOTE:Do not start the process of disabling SafeDC in case of low battery.NOTE:Disable the safeDC for each string individually. To disable the SafeDC mode:1If using add-on power optimizers (OPIxxx or OPAxxx), makesure each power optimizer is connected to the PV module, asdescribed in the SolarEdge Power Optimizers Installation Guide.2Connect power optimizers in a string, as described in theSolarEdge Power Optimizers Installation Guide.3Connect a string of power optimizers to the SolarEdge Key (seeFigure 2).4Check that the string voltage (Vo xxx.x) is compatible withthe number of optimizers. When power optimizers are inSafeDC mode, the Vo of each optimizer is 1V dc.5Long press SafeDC Disable. The screen displays IndOP andthen N / Y?6Short press the right button (Confirm) to continue or the leftbutton (Esc) to abort;If you confirmed, the screen displays a backward countdownand then displays #OP: xx(xx number of power optimizers in the string, between 0-30).12SolarEdge Key User Guide – MAN-01-00131-1.1

Chapter 2: Using the SolarEdge KeyAfter 5 seconds, the string output voltage Vo is displayed(xxx.x). The SafeDC mode is now disabled and the voltage ofeach power optimizer equals the voltage of the module.WARNING!The DC cables carry a high voltage and the poweroptimizers no longer output a safe 1V output.PROCEED WITH CARE!7Disconnect the string cables and connect them to the inverter.8Perform the commissioning steps of the inverter as describedin its manual. When connecting to inverters without SMI,pairing is not required.Enabling SafeDCWhen connecting power optimizers directly to a SolarEdge inverteror to a Safety and Monitoring Interface, SafeDC should be enabled toensure that all power optimizers are set to a 1V DC output voltagebefore connecting to SolarEdge inverter or SMI.NOTE:Enable the safeDC for each string individually. To enable SafeDC:1If using add-on power optimizers (OPIxxx or OPAxxx), makesure each power optimizer is connected to the PV module, asdescribed in the SolarEdge Power Optimizers Installation Guide.2Connect power optimizers in a string, as described in theSolarEdge Power Optimizers Installation Guide.3Connect a string of power optimizers to the SolarEdge Key (seeFigure 2).4Long press SafeDC Enable. The screen displays SafeDC andthen N / Y?SolarEdge Key User Guide – MAN-01-00131-1.113

Chapter 2: Using the SolarEdge Key5Short press the right button (Confirm) to continue or the leftbutton (Esc) to abort;If you confirmed, the screen displays a backward countdownand then displays #OP: xx(xx number of power optimizers in the strings, between 0-30).6After 5 seconds, the string output voltage Vo is displayed(xxx.x).The SafeDC mode is now active and the voltage of each poweroptimizer is 1V. The string voltage equals the number of poweroptimizers (less than 30V). When connecting to inverters withSMI, perform the Commissioning steps as described in theSolarEdge SMI Installation Guide, available on the SolarEdgewebsite erters/guides/se installation guide safety monitoring.pdf.All the power optimizers must be logically paired to the SMI.The power optimizers do not start producing power until theyare paired with an SMI.14SolarEdge Key User Guide – MAN-01-00131-1.1

Appendix A: Errors and TroubleshootingAppendix A: Errors andTroubleshootingWhen an error occurs, the LCD displays one of the followingmessages:Error DescriptionPossible CausePossible TroubleshootingSolarEdge KeydisplaysOV! XXXX.XThe string voltage ishigher than themaximum allowedsystem voltage(1000V)Turn the SolarEdge Key OFFand disconnect the PV string.Refer to the PV moduledatasheet to determine themaximum number of modulesthat can be connected into astring without exceeding the1000V limit for the SolarEdgeKeySolarEdge Keydisplays Inv VoNegative stringvoltageReversed polarity - Refer tothe SolarEdge InstallationManual for more details.SolarEdge Keydisplays Failedafter pressingSafeDC DisablePV String is too longConnect up to 30 optimizers(not more than 1000V total) tothe SolarEdge Key and repeatSafeDC disabling (DisablingSafeDC, on page 12).The number ofpower optimizerson the LCD displayafter SafeDCdisabling is lessthan the number ofpower optimizersconnected in thestringOne or more poweroptimizers are notconnected properlyto the stringCheck the power optimizers'connection and repeatSafeDC disabling.One or more poweroptimizers areshaded or notgetting enoughpower during thecommissioningRepeat SafeDC disablingwhen all power optimizershave sufficient power (all PVmodules are exposed to sunlight).SolarEdge Key User Guide – MAN-01-00131-1.115

Appendix A: Errors and TroubleshootingError DescriptionPossible CausePossible TroubleshootingThe SolarEdge Keydisplays Failedafter pressingSafeDC EnableOne or moreoptimizer did notcommunicate to theSolarEdge KeyCheck all power optimizers'connections.Repeat the SafeDC enabling(Enabling SafeDC, onpage 13).If the error persists, contactSolarEdge support.After enablingSafeDC, the stringvoltage is higherthan the number ofpower optimizers inthe stringOne or more poweroptimizers did notturn to SafeDC (notenough power dueto shading or otherreason)Repeat SafeDC enablingwhen all power optimizershave sufficient power (all PVmodules are exposed to sunlight).After enablingSafeDC, the stringvoltage is lowerthan the number ofpower optimizers inthe stringOne or moreoptimizers are OFF(for example, if thereis not enough powerdue to shading orother reason)Repeat SafeDC enablingwhen all power optimizershave sufficient power (all PVmodules are exposed to sunlight).For troubleshooting SolarEdge equipment errors, refer to theSolarEdge Power Optimizer Installation Guide or SolarEdge InverterInstallation Guide.16SolarEdge Key User Guide – MAN-01-00131-1.1

Appendix B: Technical SpecificationsAppendix B: Technical SpecificationsElectrical SpecificationsNumber of string inputs1 (MC-4)Number of power optimizersthat can be commissioned insingle string4-30 power optimizersMaximum input voltage1000Power supply3 x AA batteries (nominalvoltage 1.5V) (not supplied)VdcMechanical SpecificationsDimensions (L x W x H)171 x 83 x 38 /6.7 x 3.3 x 1.5mm/InchWeight 0.5 / 1.1kg / lbsStandard ComplianceElectromagnetic compatibilityFCC Part15 Class A,IEC61000-6-2, IEC61000-6-3SafetyIEC61010-1, IEC61010-031Environmental SpecificationsStorage temperature range-40 to 85 / -40 to 185ºC / ºFOperating temperature range-20 to 50 / -4 to 122ºC / ºFRelative humidity (noncondensing)0 - 95Protection ratingIP65SolarEdge Key User Guide – MAN-01-00131-1.1%17

SolarEdge Power Optimizers Installation Guide for more details. When connecting PV strings with power optimizers directly to a non-SolarEdge inverter without a Safety and Monitoring Interface, SafeDC must be disabled before connecting the string to the inverter. The SolarEdge