ABB UNO-DM-3.3-TL-PLUS Product Manual
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ABB UNO-DM-3.3-TL-PLUS Product Manual

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ABB solar inverters
Product Manual
UNO-DM-1.2/2.0/3.3/4.0/4.6/5.0-TL-PLUS
(from 1.2 to 5.0 kW)

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Summary of Contents for ABB UNO-DM-3.3-TL-PLUS

  • Page 1 ABB solar inverters Product Manual UNO-DM-1.2/2.0/3.3/4.0/4.6/5.0-TL-PLUS (from 1.2 to 5.0 kW)
  • Page 2 Operators are required to read this manual and scrupulously follow the instructions given in it, since ABB cannot be held responsible for damage caused to people and/or things, or the equipment, if the conditions described below are not observed.
  • Page 3 3 - Safety and accident prevention 4 - Lifting and transport 5 - Installation 6 - Instruments 7 - Operation 8 - Maintenance UNO-DM-1.2/2.0/3.3/4.0/4.6/5.0-TL-PLUS-Product manual EN-Rev A (M000036AG) EFFECTIVE 04/04/2017 © Copyright 2017 ABB. All Rights Reserved. - 3 -...

  • Page 4: Introduction And General Information

    ABB declares that the equipment complies with the provisions of law currently in force in the country of installation and has issued the corresponding declaration of conformity.

  • Page 5: Table Of Contents

    Accessory Board UNO-DM-COM KIT (Only -X models or as optional accessory) .......10 Accessory Board UNO-DM-PLUS-COM Ethernet KIT (Only -E models or as optional accessory) ....11 REACT-MTR-1PH energy meter ......................12 ABB B23 3PH energy meter ........................12 The document and intended audience .....................13 Purpose and structure of the document ................13 List of annexes ........................13...
  • Page 6 1- Introduction and general information . Safety and accident prevention ....................45 Safety instructions and general information ..................45 Hazardous areas and operations .......................46 Environmental conditions and risks ..................46 Signs and labels ........................46 Thermal and electrical hazard ....................47 Clothing and protection of personnel ..................47 Residual risks ............................48 Table: residual risks.......................48 .
  • Page 7 1- Introduction and general information Connection of the energy meter ......................85 Connection of the REACT-MTR-1PH (single-phase) ............85 Connection and configuration of the ABB B23 3PH (three-phase) ........87 Closing the front cover ........................90 . Instruments ........................... 91 General conditions ..........................91 Description of keyboard and LED Panel................92 .
  • Page 8 1- Introduction and general information . Maintenance ..........................155 General conditions ..........................155 Routine maintenance .........................156 Troubleshooting ..........................157 Internal Webserver and wireless communication troubleshooting ........157 Alarm Messages of the Inverter ..................159 Power limitation messages ....................168 Dismantling the inverter ........................170 Registration on “Registration” website and calculation of second-level password (Service menu, Admin Plus) ..........................171 Resetting the remaining time for grid standard variation from display ........174 Verification of ground leakage ......................175...

  • Page 9: Reference Number Index

    1- Introduction and general information eference number index , Bracket , DC disconnect switch , Display (Only for -S models) , Lock spring , Keyboard , UNO-DM-COM KIT Card , Heat sink , DC input connectors (Only for -X and -E models or as op- , Anti-condensation valve , AC output connector tional accessory)

  • Page 10: Accessory Board Uno-Dm-Com Kit (Only -X Models Or As Optional Accessory)

    1- Introduction and general information ccessory Board UNO-DM-COM KIT (Only -X models or as optional accessory) , Inverter connector , Fixing hole , DRM0 activation jumper , RS485 Termination line jumper , ALARM terminal block , RS485 and REM terminal block - 10 -...

  • Page 11: Accessory Board Uno-Dm-Plus-Com Ethernet Kit (Only -E Models Or As Optional Accessory)

    1- Introduction and general information ccessory Board UNO-DM-PLUS-COM Ethernet KIT (Only -E models or as optional accessory) , Inverter connector , ALARM terminal block , LAN Ethernet connector , RS485 Termination line jumper , Fixing hole , RS485 and REM terminal block , DRM0 activation jumper - 11 -...

  • Page 12: React-Mtr-1Ph Energy Meter

    IN PU T : 11 0/ 23 0 V 50 /6 0 Hz 10 mA ma BB B23 3PH energy meter , ABB B23 3PH Meter , terminal block for three-phase connection , METER RS485 serial terminal block - 12 -...

  • Page 13: The Document And Intended Audience

    1- Introduction and general information he document and intended audience urpose and structure of the document This operating and maintenance manual is a useful guide that will enable you to work safely and carry out the operations necessary for keeping the equipment in good working order.

  • Page 14: Symbols And Signs

    1- Introduction and general information ymbols and signs In the manual and/or in some cases on the equipment, the danger or hazard zones are indicated with signs, labels, symbols or icons. Symbol Description Indicates that it is mandatory to consult the manual or original document, which must be available for future use and must not be damaged in any way.
  • Page 15 1- Introduction and general information Symbol Description Indicates a risk of electric shock. Stored energy discharge time: 5 minutes Indicates a risk of electric shock. Stored energy discharge time: 10 minutes Direct Current Alternating current With insulation transformer Without insulation transformer Positive pole of the input voltage (DC) Negative pole of the input voltage (DC) Indicates the centre of gravity of the equipment.

  • Page 16: Field Of Use, General Conditions

    1- Introduction and general information ield of use, general conditions ABB accepts no liability for damage of any kind that may arise from incor- rect or careless operations. You may not use the equipment for a use that does not conform to that provided for in the field of use.

  • Page 17: Characteristics

    Characteristics eneral conditions The characteristics of the equipment are described so that its main components can be identified and the technical terminology used in the manual can be explained. Technical terminology and the fast information retrieval system, are supported by: •...

  • Page 18: Models And Range Of Equipment

    1.2kW, 2.0kW, 3.3 kW, 4.0 kW, 4.6 kW and 5.0 kW. For each model, the following variants are available (suffix could be com- bined): - Models with “B” suffix (e.g. UNO-DM-3.3-TL-PLUS-B). Models equipped with Wireless communication. - Models with “S” suffix (e.g. UNO-DM-3.3-TL-PLUS-S).

  • Page 19: Identification Of The Equipment And Manufacturer

    2 - Characteristics dentification of the equipment and manufacturer The technical data provided in this manual does not substitute the data supplied on the labels affixed to the equipment. The labels affixed to the equipment must NOT be removed, damaged, stained, hidden, etc., for any reason whatsoever.
  • Page 20 The officially required information is located on the Regulatory label. The product label or the Wireless Identification label are accessory labels which shows the information necessary for the identification and characterisation of the inverter by ABB. Note: The labels are NOT to be hidden by foreign objects and parts (rags, boxes, equipment, etc.);...

  • Page 21: Characteristics And Technical Data

    2 - Characteristics haracteristics and technical data UNO-DM-1.2-TL-PLUS UNO-DM-2.0-TL-PLUS Input Side Absolute maximum DC input voltage (Vmax,abs) 600 V Start-up DC input voltage (Vstart) 120 V (adj. 100V...150V) 150 V (adj. 100…250 V) Operating DC input voltage range (Vdcmin...Vdcmax) 0.7 x Vstart...580 V (min 90 V) Rated DC input voltage (Vdcr) 185 V 300 V...
  • Page 22 (check your sales channel for availability) IEC 61727, IEC 62116 1. Refer to the document “String inverter – Product Manual appendix” available at www.abb.com/solarinverters to know the brand and the model of the quick fit connector. 2. For UK G83/2 grid standard, maximum output current limited to 16A up to a maximum output Pacr of 3600W and maximum ap- parent power of 3600 VA.
  • Page 23 2 - Characteristics UNO-DM-3.3-TL-PLUS UNO-DM-4.0-TL-PLUS Input Side Absolute maximum DC input voltage (Vmax,abs) 600 V Start-up DC input voltage (Vstart) 200 V (adj. 120...350 V) Operating DC input voltage range (Vdcmin...Vdcmax) 0.7 x Vstart...580 V (min 90 V) Rated DC input voltage (Vdcr)
  • Page 24 (check your sales channel for availability) IEC 61727, IEC 62116 1. Refer to the document “String inverter – Product Manual appendix” available at www.abb.com/solarinverters to know the brand and the model of the quick fit connector. 2. For UK G83/2 grid standard, maximum output current limited to 16A up to a maximum output Pacr of 3600W and maximum ap- parent power of 3600 VA.
  • Page 25 2 - Characteristics UNO-4.6-DM-TL-PLUS UNO-5.0-DM-TL-PLUS Input Side Absolute maximum DC input voltage (Vmax,abs) 600 V Start-up DC input voltage (Vstart) 200 V (adj. 120...350 V) Operating DC input voltage range (Vdcmin...Vdcmax) 0.7 x Vstart...580 V (min 90 V) Rated DC input voltage (Vdcr) 360 V Rated DC input power (Pdcr) 4750 W...
  • Page 26 IEC 62116 IEC 61727, IEC 62116 1. Refer to the document “String inverter – Product Manual appendix” available at www.abb.com/solarinverters to know the brand and the model of the quick fit connector. 2. For UK G83/2 grid standard, maximum output current limited to 16A up to a maximum output Pacr of 3600W and maximum ap- parent power of 3600 VA.

  • Page 27: Tightening Torques

    2 - Characteristics ightening torques To maintain the IP65 protection of the system and for optimal installation, the following tightening torques must be used: 4...5 Nm AC output connector cable gland (ring nut fastening) Screws for securing AC output connector cables gland 0.8...1 Nm Service cable gland M25 (ring nut fastening)

  • Page 28: Bracket Dimensions

    2 - Characteristics racket dimensions The dimensions of the wall mounting bracket are expressed in 33.25 86.75 31.75 31.75 86.75 - 28 -...

  • Page 29: Efficiency Curves

    Graphs of the efficiency curves of all models of inverter described in this manual are shown below. The efficiency curves are linked to technical parameters that are continually being developed and improved and should therefore be considered approximate. UNO-DM-3.3-TL-PLUS - Efficiency Curves 210Vdc 360Vdc 480Vdc...
  • Page 30 2 - Characteristics UNO-DM-4.6-TL-PLUS - Efficiency Curves 210Vdc 360Vdc 480Vdc 100% % of rated Output Power UNO-DM-5.0-TL-PLUS - Efficiency Curves 210Vdc 360Vdc 480Vdc 100% % of rated Output Power - 30 -...

  • Page 31: Power Limitation (Power Derating)

    In any case, the inverter guarantees the maximum output power even at high temperatures, provided the sun is not shining directly on it. Pout Vs Tamb @ Vnom 100%(Pacr) UNO-DM-3.3-TL-PLUS UNO-DM-4.0-TL-PLUS UNO-DM-4.6-TL-PLUS UNO-DM-5.0-TL-PLUS Ambient temperature (°C)

  • Page 32: Power Reduction Due To The Input Voltage

    2 - Characteristics ower reduction due to the input voltage The graphs show the automatic reduction of supplied power when input voltage values are too high or too low. Pout Vs Vin (double input channel) UNO-DM-3.3-TL-PLUS UNO-DM-4.0-TL-PLUS UNO-DM-4.6-TL-PLUS UNO-DM-5.0-TL-PLUS Vin (Vdc)

  • Page 33: Characteristics Of A Photovoltaic Generator

    2 - Characteristics haracteristics of a photovoltaic generator A PV generator consists of an assembly of photovoltaic modules that transform solar radiation into DC electrical energy and can be made up Strings: number (X) of PV modules connected in series Array: group of X strings connected in parallel trings and Arrays The string technology was developed to significantly reduce the install-...

  • Page 34: Description Of The Equipment

    (via a photovoltaic field, also called PV generator); in order to use it, it is transformed into “AC” alternating current. This conversion, known as inversion from DC to AC, is done in an efficient way by the ABB invert- ers, without using any rotary elements, rather only via static electronic systems.

  • Page 35: Mutual Connection Of Multiple Inverters

    A configuration program that can help to correctly size the photovoltaic system is available on the ABB website (http://stringsizer.abb.com). - 35 -...

  • Page 36: Operating Diagram

    2 - Characteristics perating diagram The plant diagram shows how the integrated WLAN board allows the inverter to connect to a LAN local network using a wireless connection. The WLAN board features an advanced integrated webserver that enables to establish a direct connection to a PC, smartphone or tablet, allowing for inverter setup and local monitoring of the inverter.

  • Page 37: Functionality And Components Of The Equipment

    Please contact the ABB tecnichal support for getting your own plant portfolio manager account (mainly for installers and plant administrators). Please get your Plant Viewer and Plant Viewer for Mobile by accessing the website www.auroravision.net and click on “Register with Plant Viewer”...
  • Page 38 (UNO-DM-COM KIT or UNO-DM-PLUS-COM Ethernet KIT). Please contact the ABB tecnichal support or get access to Sunspec alliance website for getting the Modbus register map supported by the inverter. - Configurable relay:...
  • Page 39 Power feeding modes vary according to the country of installation and the grid companies. For detailed information on the parameters and characteristics of this function, contact ABB directly. Limiting the active power fed into the grid The inverter, if enabled and set using the display or the Aurora Manager configuration software, can limit the amount of active power fed into the grid by the inverter to the desired value (expressed as a percentage).

  • Page 40: Topographic Diagram Of The Equipment Uno-Dm-1.2/2.0-Tl-Plus

    2 - Characteristics opographic diagram of the equipment UNO-DM-1.2/2.0-TL-PLUS The diagram summarises the internal structure of the inverter. The internal circuitry of the 1.2 and 2kW power levels is with double stage conversion and therefore consists of: - DC/DC input converter (booster) - DC-AC output inverter The DC-DC converter and the DC-AC inverter both work at a high switch- ing frequency and are therefore small and relatively light.
  • Page 41 2 - Characteristics - 41 -...

  • Page 42: Topographic Diagram Of The Equipment Uno-Dm-3.3/4.0/4.6/5.0-Tl-Plus

    2 - Characteristics opographic diagram of the equipment UNO-DM-3.3/4.0/4.6/5.0-TL-PLUS The diagram summarises the internal structure of the inverter. The internal circuitry of the 3.3 to 5.0kW power levels is with single stage conversion and therefore consists only of: - DC-AC output converter (Inverter); The input voltage from the PV generator is directly converted into altern- ating output current;...
  • Page 43 2 - Characteristics - 43 -...

  • Page 44: Safety Devices

    2 - Characteristics afety devices nti-Islanding In the event of a local grid outage by the electricity company, or when the equipment is switched off for maintenance operations, the inverter must be physically disconnected to ensure the protection of the people working on the grid, in accordance with the relevant national laws and regulations.

  • Page 45: Safety And Accident Prevention

    It is therefore necessary for the customer to appropriately inform the manufacturer about particular installation conditions. ABB accepts no liability for failure to comply with the instructions for correct installation and will not be held responsible for systems upstream or downstream of the equipment it has supplied.

  • Page 46: Hazardous Areas And Operations

    These conditions are listed in the technical data and in the installation chapter. ABB IS NOT responsible for the disposal of the equipment: displays, cables, batteries, accumulators, etc., and therefore the customer must dispose of these items, which are potentially harmful to the environment, in accordance with the regulations in force in the country of installation.

  • Page 47: Thermal And Electrical Hazard

    ABB has done its best to eliminate sharp edges and corners, but as this is not always possible you are advised always to wear the clothing and personal protective equipment provided by the employer.

  • Page 48: Residual Risks

    3 - Safety and accident prevention esidual risks Despite the warnings and safety systems, there are still some residual risks that cannot be eliminated. These risks are listed on the following table with some suggestions to prevent them. Table: residual risks RISK ANALYSIS AND DESCRIPTION SUGGESTED REMEDY Noise pollution due to installation in unsuitable environments or where...

  • Page 49: Lifting And Transport

    During handling, do not make any sudden or fast movements that could generate dangerous swinging. ifting ABB usually stores and protects individual components by suitable means to make their transport and subsequent handling easier. Non- etheless, as a rule, it is necessary to turn to the experience of specialised staff to take charge of loading and unloading components.

  • Page 50: List Of Components Supplied

    4 - Lifting and transport ist of components supplied All the components required to correctly install and connect the inverter are supplied together with the inverter. Available components Quantity Bracket for wall mounting M5x10 screw for the external ground connection M5 contact washer for the external ground connection M5x10 Wall bracket locking screw (to be used if required) M5 Wall bracket locking washer (to be used if required)

  • Page 51: Weight Of The Modules Of The Equipment

    4 - Lifting and transport eight of the modules of the equipment Table: Weights Weight (Kg/lb) Lifting points (no.#) UNO-DM-1.2/2.0/3.3/4.0/4.6/5.0-TL-PLUS 15 kg / 33 lb - 51 -...

  • Page 52: Installation

    Installation eneral conditions The equipment is installed depending on the system and the place where it is installed. Its performance therefore depends on the correctness of the connections. Staff authorised to carry out the installation must be specialised and experienced in this job; they must also have received suitable training on equipment of this type.

  • Page 53: Environmental Checks

    5 - Installation nvironmental checks • Consult the technical data to check the required environmental condi- tions (protection rating, temperature, humidity, altitude, etc.) • Installation of the unit in a location exposed to direct sunlight must be avoided (otherwise the warranty will be cancelled) as it may cause: - power limitation phenomena in the inverter (with a resulting de- creased energy production by the system) - premature wear of the electrical/electromechanical components...

  • Page 54: Wireless Signal Environmental Checks

    5 - Installation ireless signal environmental checks The WLAN board of the inverter uses radio waves to transmit and re- ceive data, it is therefore important to assess this factor in order to have optimal installation. • Walls in reinforced cement and surfaces covered in metal (doors, shutters, etc.) can markedly reduce the reach of the device which even in optimal conditions, should be of approximately 50 metres in free space.
  • Page 55 5 - Installation Material of the structure: Concrete Distance X between the Inverter and the wireless Router: any distance Installation: to be evaluated. Assess the quality of the RF signal and the possibility of extending the signal with a repeater. Material of the structure: Metal or reinforced concrete Distance X between the Inverter and the...

  • Page 56: Recommendations For The Wireless Signal Power

    5 - Installation ecommendations for the wireless signal power The radio signal level between the inverter and the wireless router can be improved in a number of ways: 1. Change the direction of the antenna. The antenna has a dead zone at its tip, which should not be positioned facing the wireless router, as shown in the figure.

  • Page 57: Installation Position

    5 - Installation nstallation position When choosing the place of installation, observe the following conditions: • Install on a wall or strong structure suitable to bear the weight • Install in safe, easy to reach locations • If possible, install at eye-level so that the display and status LEDs can be seen easily •...

  • Page 58: Wall Mounting

    5 - Installation all mounting During installation do not place the inverter with the front cover facing the ground. Install the inverter by following this procedure: • Place the bracket perfectly level on the wall and use it as a drilling template.

  • Page 59: Wireless Antenna Mounting

    5 - Installation ireless antenna mounting Install the wireless antenna (provided in the mounting kit) by following this procedure: • Remove the external antenna connector protection cap (in red). Install wireless antenna by screwing it into the dedicated connector loc- •...

  • Page 60: Opening The

    5 - Installation pening the front cover WARNING! ELECTRIC SHOCK HAZARD! Hazardous voltages may be present inside the inverter. The access to the internal zones of the inverter must be carried out after a minimum waiting time of 5 minutes since the inverter was disconnected from the grid and from the photovoltaic generator.

  • Page 61: Preliminary Operations For Connection Of The Pv Generator

    5 - Installation reliminary operations for connection of the PV generator hecking the correct polarity of the strings Using a voltmeter, check that the voltage of each string has the correct polarity and falls within the input voltage limits of the inverter (see technical data).

  • Page 62: Selection Of Differential Protection Downstream Of The Inverter

    B differential switch. In accordance with article 712.413.1.1.1.2 of Section 712 of IEC Standard 64-8/7, we hereby declare that, because of their construction, ABB inverters do not inject ground fault direct currents. The use of an AC type circuit breaker with differential thermal magnetic protection with tripping current of 300 mA is advisable so as to prevent false tripping, due to the normal capacitive leakage current of photovoltaic modules.

  • Page 63: Independent Or Parallel Input Channels Configuration

    5 - Installation ndependent or parallel input channels configuration The inverter versions from 3.3kw to 5.0kw are equipped with two input channels (thus benefiting from two trackers for MPPT maximum power point tracking) which work independently of one another, which can be paralleled by leveraging a single MPPT.

  • Page 64: Channel Configuration Examples

    5 - Installation Channel configuration examples PV generator characteristics MPPT configu- Notes ration The photovoltaic generator consists A NECESSARY condition so that the two of strings having a different number MPPTs can be used in independent mode is for MPPT configu- of modules in series from each other.

  • Page 65: Independent Channel Configuration (Default Configuration)

    5 - Installation ndependent channel configuration (default configuration) This configuration is set at the factory and involves the use of the two input channels (MPPT) in an independent mode. This means that the jumpers (supplied) between the positive and negative poles of the two DC input channels must not be installed, and that the independent channel mode should be set during the commissioning phase, in the de-...

  • Page 66: Input Connection To Pv Generator (Dc Side)

    H4) located on the bottom of the mechanic Refer to the document “String inverter – Product Manual appendix” avai- lable at www.abb.com/solarinverters to know the brand and the model of the quick fit connector. Depending on the model of the connector of...
  • Page 67 The figure below shows a connection example of the string inputs on a UNO-DM-3.3-TL-PLUS-SB inverter. If any string inputs are not required, you must ensure that covers are installed to the connec- tors, and install any which are missing.

  • Page 68: Installation Procedure For Quick-Fit Connectors

    5 - Installation nstallation procedure for quick-fit connectors There are typically four different types of quick-fit connector models used on ABB inverters: Weidmüller PV-Stick or WM4, MultiContact MC4 and Amphenol H4. Please refer to the document “String inverters – Product manual ap- pendix”...
  • Page 69 5 - Installation 2. WEIDMÜLLER WM4 quick-fit connectors Installation of Weidmüller WM4 connectors requires crimping to be car- ried out with suitable equipment. - Strip the cable to which you want to apply the connector (after verifying that it complies with the connector limits). 4...6mm - Apply the terminal to the conductor using the designated pliers.
  • Page 70 5 - Installation 3. MULTICONTACT MC4 quick-fit connectors Installation of Multicontact MC4 connectors requires crimping to be car- ried out with suitable equipment. - Strip the cable to which you want to apply the connector (after verifying that it complies with the connector limits). 4...6mm - Apply the terminal to the conductor using the designated pliers.
  • Page 71 5 - Installation 4. AMPHENOL H4 quick-fit connectors Installation of Amphenol H4 connectors requires crimping to be carried out with suitable equipment. - Strip the cable to which you want to apply the connector (after verifying that it complies with the connector limits). 4...6mm - Apply the terminal to the conductor using the designated pliers.

  • Page 72: Distribution Grid Output Connection (Ac Side)

    5 - Installation istribution grid output connection (AC side) To connect the inverter to the grid you need 4 connections: ground, neut- ral, phase and external grounding protection In any case, connection of the inverter to ground is mandatory. Any failure of the inverter when it is not connected to ground through the appropriate terminal (AC connector) and to the metal frame (external grounding protection) is not covered by the warranty.

  • Page 73: Load Protection Switch (Ac Disconnect Switch)

    5 - Installation The table shows the maximum line conductor length in relation to the section of the conductor itself: Line conductor Line conductor maximum length (m) cross section (mm²) UNO-DM-1.2 UNO-DM-2.0 UNO-DM-3.3 UNO-DM-4.0 UNO-DM-4.6 UNO-DM-5.0 18 m 10 m 22 m 15 m 11 m...

  • Page 74: Installation Of The Cable On The Ac Output Connector

    5 - Installation nstallation of the cable on the AC output connector • Remove the head of the connector by pressing on the two holding clips and subsequently loosen the cable gland. • Feed the cable through the connector and cut the cable to size Ensure that the cable's radius of curvature is more than 4 times the diameter of the cable •...
  • Page 75 5 - Installation • Install the single wires (phase, neutral and ground) on the head of the connector respecting the indications printed on each of the three connec- tion terminals (tightening torque 0.8...1Nm) • Close the connector and tighten the cable gland respecting the tighten- ing torque (4+1Nm) in order to guarantee the IP65 protection level - 75 -...

  • Page 76: Connection For The Ac Output Connector To The Inverter

    5 - Installation onnection for the AC output connector to the inverter To avoid risks of electrical shock, all wiring operations must be carried out with the dis- connect switch downstream of the inverter (grid side) off. For all inverter models, connection to the electrical grid is carried out using the AC output connector •...

  • Page 77: Installation Of The External Protective Grounding Cable

    5 - Installation nstallation of the external protective grounding cable In addition to the grounding protection previously connected to the AC output connector, a second protective grounding cable has to be installed to be connected to the metal frame of the inverter. The cable to be used must be copper and have a minimum cross-section not less than the phase cable and in any case not less than 4mm².

  • Page 78: Communication And Control Signal Connections To The Uno-Dm-Com Kit Board (Only For -X / -E Version)

    5 - Installation ommunication and control signal connections to the UNO-DM- COM KIT board (only for -X / -E version) Each cable which must be connected to the UNO-DM-COM KIT or UNO- DM-PLUS-COM Ethernet KIT board connectors must be passed through the specific cable conduit present on the plastic shield of the mainboard, then it must be passed through the service cable glands present on...

  • Page 79: Description Of Terminal Blocks On The Uno-Dm-Com Kit Board (Only For -X Version)

    5 - Installation escription of terminal blocks on the UNO-DM-COM KIT board (only for -X version) Description of multifunctional relay terminal block Terminal Terminal Description name number N.C. "Normally closed" terminal of multifunctional relay ALARM "Common" terminal of multifunctional relay N.O.

  • Page 80: Description Of Terminal Blocks On The Uno-Dm-Plus-Com Ethernet Kit Board (Only For -E Version)

    5 - Installation escription of terminal blocks on the UNO-DM-PLUS-COM Ethernet KIT board (only for -E version) Description of multifunctional relay terminal block Terminal Terminal Description name number N.C. "Normally closed" terminal of multifunctional relay ALARM "Common" terminal of multifunctional relay N.O.

  • Page 81: Connection Of The Rs485 Line

    5 - Installation onnection of the RS485 line On the inverter models which equip the UNO-DM-COM KIT board (-X or -E version only) it is possible to use the RS485 communication port for: Connecting the inverter to an external supported energy meter (to manage the energy produced by the PV plant with the Dynamic Feed-in control functionality);...
  • Page 82 5 - Installation The RS485 HALF-DUPLEX communication line is made up of two trans- mission and reception cables (+T/R and –T/R) and a communication ref- erence cable (RTN): all three cables must be connected in daisy-chain configuration (it’s recommended to make connection external to the in- verter).

  • Page 83: Remote Control Connection

    5 - Installation emote control connection The connection and disconnection of the inverter to and from the grid can Inverter be controlled through an external control. The function must be enabled in the specific section of internal webserver Settings (see the specific chapter) or through the display and the keyboard in the specific menu (see the side picture).

  • Page 84: Configurable Relay Connection (Alarm / Load Manager)

    5 - Installation onfigurable Relay connection (ALARM / LOAD MANAGER) The UNO-DM-COM KIT board is equipped with a relay with configurable activation that allows connection of external devices which for example, signal malfunctions to manage loads with a specific configurable power input threshold, according to the mode selected in the specific section of internal webserver (see the specific chapter) or in the display menu “INVERTER >...

  • Page 85: Connection Of The Energy Meter

    On the basis of the type of electric supply the following are available: • REACT-MTR-1PH for single-phase supplies • ABB B23 for three-phase supplies (also capable for single-phase supplies) The energy meter will communicate with the inverter through the RS485...
  • Page 86 5 - Installation Subsequently the cable must be connected inside the inverter on the Accessory Board respecting the correspondence between the si- gnals of the serial line. Serial line terminal block Communication and control of the REACT-MTR signal terminal block of the Accessory Board +T/R...

  • Page 87: Connection And Configuration Of The Abb B23 3Ph (Three-Phase)

    (three-phase) The indications set out below are necessary to connect the meter to the inverter. Always refer to the specific documentation supplied with the ABB B23 3PH meter. The energy meter ABB B23 3PH is a DIN rail device (4 modules) and must be installed where the electricity supply is three-phase.
  • Page 88 5 - Installation It’s possible to use the three-phase meter ABB B23 as a single-phase meter. To use the ABB B23 as a single-phase meter connect it as follows: • Connect the cables of the serial line A (37), B (36) and C (37) on the...
  • Page 89 5 - Installation • Once the phase of mechanical installation of the METER is finished, it is necessary to configure the METER in order to make it compatible with the inverter. Set the parameters on the meter display as set out in the table: Parameter Settings...

  • Page 90: Closing The

    5 - Installation losing the front cover At the end of the inverter connection and configuration stage and be- fore proceeding with the commissioning, the inverter's cover must be closed. During the installation of the cover, the installation sequence must be respected as well as IP65 the tightening torque of the 8 screws (set out in the paragraph on technical data) in order to keep the IP level of the inverter unchanged...

  • Page 91: Instruments

    - there are doubts or contradictions between your experience, the manual and/or other operators. ABB cannot be held responsible for damage to the equipment or the operator if it is the result of incompetence, insufficient qualifications or lack of training.

  • Page 92: Description Of Keyboard And Led Panel

    6 - Instruments escription of keyboard and LED Panel Using the combination of the keyboard keys below the display, values can be set or data can be viewed by scrolling. COMM RSSI STATUS Description On if the inverter is working correctly. POWER (GREEN) Flashes when checking the grid or if there is insufficient sunlight.

  • Page 93: Operation

    Operation eneral conditions Before checking the operation of the equipment, it is necessary to have a thorough understanding of the INSTRUMENTS chapter and the functions that have been enabled in the installation. The equipment operates automatically without the aid of an operator; operating state is controlled through the instruments.

  • Page 94: Monitoring And Data Transmission

    • Data transmission on the dedicated RS-485 serial line. The data can be collected by a PC or a data logger equipped with an RS-485 port. Con- tact the ABB support service with any queries about device compatibility. easurement tolerance The data supplied by the inverter may differ from measurements taken by certified measuring instruments (e.g.

  • Page 95: Commissioning (Via Internal Webserver)

    ABB-XX-XX-XX-XX-XX-XX where “X” is a hex digit of the wireless MAC address (MAC address can be found on the “Wireless Identification Label” placed on the side of the inverter or applied during the commissioning phase to the quick installa- tion guide on cover page).
  • Page 96 7 - Operation • Open an internet browser (reccomended browser: Chrome versions from v.55, Firefox versions from v.50) and enter the pre-set IP address 192.168.117.1 to access the setup pages (web user interface). A guided setup procedure will open that will enable you to impose the necessary settings for correct commissioning of the inverter.
  • Page 97 7 - Operation STEP 2 (Optional) - Residential wireless network connection. The inverter WLAN board can operate in two different operating modes: “Station Mode” or “Access Point Mode” (also known as “AP Mode”) • “AP mode”: Only local communication is enabled in this mode; In particular, the WLAN board acts like an «access point»...
  • Page 98 7 - Operation The parameters relating to the home wireless network (set on the router) that must be known and set during this step are: - IP Settings: DHCP or Static. If you select the DHCP function (default setup) the rou- ter will automatically assign a dynamic IP address to the inverter whenever it tries to connect to the user network.
  • Page 99 (the WLAN board auto- matically disables its access point network with the name ABB-XX-XX-XX-XX-XX-XX that it is no longer necessary). The message provides the links corresponding to the IP Address assigned by the home wireless network router to the inverter and the “Host Name”: both links can be used...
  • Page 100 7 - Operation STEP 3 - Date, Time and Time zone Set the Date, Time and Time zone (The inverter will propo- se these fields when available). When it’s not possible for the inverter to detect the time protocol, these fields have to be manually entered. Click on “Next”...
  • Page 101 When a meter device is connected to the inverter, it’s requested to select the meter model: 1. None (where system is installed without meter) 2. REACT-MTR-1PH (single-phase) 3. ABB B23 1PH (single-phase) 4. ABB B23 3PH (three-phase) - 101 -...
  • Page 102 (This field will appear only if you select the ABB B23 3PH meter model) ENERGY POLICY: set the way in which you want to manage the energy produced by the PV plant,...
  • Page 103 To address any problems that may occur during the initial stages of operation of the system and to ensure the inverter remains fully functional, you are advised to check for any firmware updates in the download area of the website www.abb.com/solarinverters or at https://regi- stration.abbsolarinverters.com (instructions for registering on the website and updating the firmware are given in this manual).

  • Page 104: Commissioning (Using The Inverter Display)

    - Selection of grid standard and corresponding display language. Lang=Xxxxxxxx For the list of available grid standards and the relative details, contact ABB. From the moment that the grid standard is set, you have 24 hours to make any changes to the value, after which the “Settings >...
  • Page 105 To address any problems that may occur during the initial stages of operation of the system and to ensure the inverter remains fully functional, you are advised to check for any firmware updates in the download area of the website www.abb.com/solarinverters or at https://regi- stration.abbsolarinverters.com (instructions for registering on the website and updating the firmware are given in this manual).

  • Page 106: Power, Alarm, Gfi Leds Behaviour

    7 - Operation ower, Alarm, GFI LEDs behaviour The following table shows all the possible activation combinations of “Power” “Alarm” and “GFI” LEDs on the LED panel according to the = LED On operating status of the inverter. = LED flashing = LED Off = Anyone of the conditions described above LED status...

  • Page 107: Specifications On Operation Of The Leds

    7 - Operation pecifications on operation of the LEDs In correspondence to each status of the inverter indicated by the constant or intermittent lighting of the specific LED, the display also shows a message identifying the operation which is being carried out or the defect/anomaly recorded (see specific chapter).

  • Page 108: Description Of The Internal Webserver

    If the “Host Name” was lost, it could be obtained writing this url: http://ABB-XX-XX-XX-XX-XX-XX.local replacing the “X” with the hex digits of the wireless MAC address of the inverter (it can be found on the “Wireless Identification Label” placed on the side of the inverter or applied during the commissioning phase to the quick installation guide on cover page).
  • Page 109 ABB-XX-XX-XX-XX-XX-XX where “X” is a hex digit of the wireless MAC address (MAC address can be found on the “Wireless Identification Label” placed on the side of the inverter or applied during the commissioning phase to the quick installa- tion guide on cover page).
  • Page 110 7 - Operation Login page After you have connected the device to the inverter and you access to the login page, login with the username and password created during the commissioning phase. User and password are CASE SENSITIVE. If the Password is lost click on “Forgot your password?” to obtain the access to the webserver (and it will be possible to change the password) by entering the PRODUCT KEY (printed on the “Wireless identification label”...

  • Page 111: Webserver Menu Structure

    7 - Operation ebserver menu structure The following screenshots are related from a laptop visualization, may differ from smartphone or tablet visualization. The Webserver is divided in six main sections, available on the left side- bar: MAIN: Main section of webserver dedicated to viewing the summary informations related the status and the production informations of the inverter and photovoltaic plant.

  • Page 112: Main Section

    7 - Operation AIN section In the MAIN section it’s possible to access the following sub-menus: • Dashboard • Status Summary Dashboard In the Dashboard sub-menu you can view the main informations re- lated the status and the production informations of the inverter and photovoltaic plant and alarm/warning active events.

  • Page 113: Setup Section

    We advise changing the activation voltage only if really necessary and to set it to the correct value: the photovoltaic generator sizing tool available on the ABB website will indicate whe- ther Vstart needs changing and what value to set it to.
  • Page 114 7 - Operation 5. Multiple Max Scan Enable This settings allows you to Enables/disables the scan for identifying the maximum power point of the system. 6. Multiple Max Scan Period This settings allows you to set the time between scans. Remember that the shorter the scan interval the greater the loss of production, due to the fact that energy is transferred to the grid during the scan but not at the maximum power point.

  • Page 115: Events Section

    7 - Operation VENTS Section In the EVENTS Section it’s possible to view the Alarm and Warning events list that it can be custom filtered by type or by entering a match- ing word. Clicking on any event to view his details. - 115 -...

  • Page 116: User Section

    7 - Operation SER section In the USER section it’s possible to logout from webserver and return to the login page, or to access the following sub-menus: • Edit Email and Password • Admin Plus • User Management Edit Email and Password In the Edit Email and Password sub-menu you can change the e-mail and password related to the user which is used to login to the web- server:...

  • Page 117: Network Section

    400/4800/9600/19200/34800/57600/115200). • RS485 Protocol Type: It allows you to set the type of protocol to be used for the RS485 line. - “Protocol Aurora Server”: it’s the proprietary ABB serial protocol usually used for back-compatibility or by ser- vice personnell.
  • Page 118 7 - Operation WLAN Status In the WLAN Status sub-menu it’s possible to view the address of the wireless board of the inverter, and to switch between the two operation mode (“Station Mode” or “AP Mode”). • “AP mode”: Only local communication is enabled in this mode; In particular, the WLAN board acts like an «access point»...
  • Page 119 7 - Operation In case of “Station Mode” selection it’s required to enter the wireless network parameters (set on the router) and follow the subsequent pro- cedure: - IP Selection Mode: DHCP or Static: If you select the DHCP function (default setup) the rou- ter will automatically assign a dynamic IP address to the inverter whenever it tries to connect to the user network.
  • Page 120 (the WLAN board auto- matically disables its access point network with the name ABB-XX-XX-XX-XX-XX-XX that it is no longer necessary). The message provides the links corresponding to the IP Address assigned by the home wireless network router to the inverter and the “Host Name”: both links can be used...
  • Page 121 “Modbus TCP Server” parameter. By changing “Modbus Power Control” parameter settings to “OFF” only reading register is enabled. Debug Settings In the Debug Settings sub-menu it’s possible to enable or disable the Debugging access for ABB Service purposes. - 121 -...

  • Page 122: Tools Section

    Once the meter model is selected, additional requested fields will appear: METER PHASE: If the METER is three-phase, the phase to which the inverter is connected must be selected. (This field will appear only if you select the ABB B23 3PH meter model) - 122 -...
  • Page 123 7 - Operation ENERGY POLICY: set the way in which you want to manage the energy produced by the PV plant, choosing from the following: Management Description mode The system automatically mana- ges power flows in order to maxi- Self mise self-consumption.
  • Page 124 7 - Operation Local I/O Manager In the Local I/O Manager sub-menu it’s possible to enable the ma- nagement of power flows in order to optimize self-consumption or avoid feeding power to the grid (this features will work only on inverter equipped with UNO-DM-COM KIT (-X models) or UNO-DM-PLUS-COM ETHERNET KIT (-E models)).
  • Page 125 7 - Operation • Configurable alarm with reset at the end of the alarm signalling pro- cess - display text “Alarm-Contact (alarm configurable - no-latch)” The relay is activated (status: switched) whenever an error (code Exxx) or a warning (code Wxxx) is present from those selected from the list in the dedicated submenu Alarm Config of the inverter display.
  • Page 126 7 - Operation Vin > Vstart • Crepuscolar - display text “Alarm-Contact (crepuscolar)”: N.C. Relay State: Switched The relay is activated (status: switched) as soon as the inverter input N.O. voltage exceeds the activation voltage set. Vin < Vstart The relay switch to rest position when the input voltage drops below 70% N.C.
  • Page 127 7 - Operation • Latch configurable alarm - display text “Alarm-Contact (alarm con- figuable - latch)”: The relay is activated (status: switched) whenever an error (code Exxx) or a warning (code Wxxx) is present from those selected from the list in the dedicated submenu Alarm Config of the inverter display (see the INVERTER RUN table below).
  • Page 128 7 - Operation • Load Manager - display text “Load Management”: Load Manager functionality it allow you to define configurable power thresholds for wich the relay is activated (status: switched) to a specific configurable power thresholds. Once this mode has been selected, the parameters for which the relay is activated and deactivated have to be set.
  • Page 129 7 - Operation Country Standard By accessing to the Country Standard sub-menu you can modify the grid standard within 24 hours while the inverter is operating. After the grid standard was set you have 24 hours to make any changes to the grid standard value;...
  • Page 130 7 - Operation Autotest CEI 0-21 By accessing to the Autotest CEI 0-21 sub-menu you can lanch an autest procedures according to the grid standard CEI-021. The conditions required to perform an Autotest are: • The grid standard must be set to CEI-021. •...
  • Page 131 An interruption of updating process could damage the inverter! • Remote firmware Update: In remote mode, the firmware will update automat- ically, searching the last available firmware on ABB servers, by clicking the “CHECK” button. After the finish of the checking process the avail-...
  • Page 132 7 - Operation Date and Time In the Date and Time sub-menu it’s possible to set the date, time and time zone. The inverter will propose these fields when the time protocol is avail- able). When it’s not possible for the inverter to detect the time protocol, these fields have to be manually entered.

  • Page 133: Information Section

    7 - Operation NFORMATION Section In the INFORMATION Section it’s possible to view the general inform- ations about the embedded webserver. it’s possible to access the following sub-menus: • Privacy Policy • Provider Information/Impressum • Acknowledgments • Relase Notes - 133 -...

  • Page 134: Description Of The Display Menus

    7 - Operation escription of the Display menus The ABB inverters are equipped with a graphic display , consisting of 2 lines of 16 characters each, which can be used to: • Display the operating status of the inverter and the statistical data •...

  • Page 135: Menu Structure

    7 - Operation enu structure System Inverter Display WLAN Logger > Settings > Statistics > Settings > Settings > Set time > Lifetime > Backlight > Restore AP > Set cash > Partial > Contrast > Info > Set RS485 com >...

  • Page 136: System Menu

    7 - Operation ystem Menu By selecting the System menu, the following menus can be accessed: System ENTER Settings DOWN Measure Settings Selecting Settings brings up the first screen relating to the password. The default password is "0000". This can be modified by using the display buttons, always following the same procedure: •...
  • Page 137 After the grid standard was set you have 24 hours to make any changes to the grid standard value; 24 hours later the “Country Select.” functionality will be blocked, and any subsequent changes can only be made using a password provided on request by ABB (refer to dedicated chapter in this manual).

  • Page 138: Inverter Menu

    7 - Operation nverter Menu By selecting the Inverter menu, the following submenus can be ac- cessed: Inverter ENTER Statistics DOWN Settings DOWN Info Statistics By selecting Statistics, the following menus can be accessed: Statistics ENTER Lifetime DOWN Partial DOWN Today DOWN Last 7 days...
  • Page 139 7 - Operation 3. Today This section of the menu displays today's statistics: • E-day: Energy produced today • P-Peak: Today’s peak power value • Val. : Value of today’s production, calculated using the currency and conversion coefficient set in the relevant section of the SETTINGS menu •...
  • Page 140 7 - Operation Settings Selecting Settings brings up the first screen relating to the password. The default password is "0000". This can be changed by using the display buttons, following the same procedure as always: • ENTER scrolls through the digits (from left to right) •...
  • Page 141 We advise changing the activation voltage only if really necessary and to set it to the cor- rect value: the photovoltaic generator sizing tool available on the ABB website will indicate whether Vstart needs changing and what value to set it to.
  • Page 142 7 - Operation 4. Service This section of the menu is reserved for installers. A special access password is required, which may be obtained from the website https://registration.ABBsolarinverters.com. Before connecting to the site, make sure you have all the information required to calculate your password: Inverter Model, Serial Number and week of manufacture of the Inverter When you have a password you can set the parameters in the menu.
  • Page 143 7 - Operation 5. Remote ON/OFF This section of the menu is used to enable/disable connection/discon- nection of the inverter from the grid using the special control signal (R+) for inverter equipped with UNO-DM-COM KIT (-X models) or UNO-DM- PLUS-COM ETHERNET KIT (-E models). •...
  • Page 144 7 - Operation 8. Reactive Power This section of the menu may be used to manage the supply of reactive power into the grid. There are 5 possible types of management: • Q: No Regulation: no regulation of reactive power. To activate this mode, press ENTER and then press ENTER to confirm.
  • Page 145 7 - Operation 9. Autotest This section of the menu is available only for the Italian country standard. The autotest according to the grid standard CEI-021 can be launched via the menu on the display. The conditions required to perform an Autotest are: •...
  • Page 146 7 - Operation At the end of the test, when the inverter has disconnected from the grid, Test in corso the results and values of the test performed will appear on the display..You can move from one screen to another using the UP/DOWN arrow keys.
  • Page 147 7 - Operation 10. Alarm This features will work only on inverter equipped with UNO-DM-COM KIT (-X models) or UNO-DM-PLUS-COM ETHERNET KIT (-E models). This section of the menu allows you to set the activation status of a relay (available either as contact normally open – N.O. - and as a normally closed contact -N.C.) and to configure customised alarm conditions.
  • Page 148 7 - Operation • Configurable alarm with reset at the end of the alarm signalling INVERTER RUN process (display text “Alarm Conf.”) N.C. The relay is activated (status: switched) whenever an error (code Exxx) Relay State: Idle N.O. or a warning (code Wxxx) is present from those selected from the list in the dedicated submenu Alarm Config.
  • Page 149 7 - Operation • Crepuscolar (display text “Crepuscolar”) Vin > Vstart The relay is activated (status: switched) as soon as the inverter input voltage exceeds the activation voltage set. N.C. Relay State: Switched N.O. The relay switch to rest position when the input voltage drops below 70% Vin <...
  • Page 150 7 - Operation • Latch configurable alarm (display text “Al. Conf. Latch”) INVERTER RUN The relay is activated (status: switched) whenever an error (code Exxx) or a warning (code Wxxx) is present from those selected from the list in N.C. Relay State: Idle the dedicated submenu Alarm Config (see the table below).
  • Page 151 7 - Operation Info By selecting the Info menu, the following menus can be accessed: Info ENTER Part No. DOWN Serial No. DOWN Firmware 1. Part No. Displays the model code 2. Serial number Displays the serial number and week and year of manufacture of the equipment 3.

  • Page 152: Display Menu

    7 - Operation isplay Menu By selecting the Display menu, the following submenus can be ac- cessed: Display ENTER Settings Settings Selecting Settings brings up the first screen relating to the password. The default password is "0000". This can be changed by using the display buttons, following the same procedure as always: •...

  • Page 153: Wlan Logger Menu

    7 - Operation LAN Logger Menu By selecting the WLAN Logger menu, the following submenus can be accessed: WLAN Logger ENTER Settings DOWN Info Settings Selecting Settings brings up the first screen relating to the password. The default password is "0000". This can be changed by using the display buttons, following the same procedure as always: •...
  • Page 154 7 - Operation Info By selecting the Info menu, the following menus can be accessed: Info ENTER Part No. DOWN Serial No. DOWN View IP DOWN View Mode 1. Part No. Allows you to view the part number of the wireless board. 2.

  • Page 155: Maintenance

    Maintenance eneral conditions Checking and maintenance operations must be carried out by specialised staff assigned to carry out this work. Maintenance operations must be performed with the equipment disconnected from the grid (power switch open) and the photovoltaic panels obscured or isolated, unless otherwise indicated.

  • Page 156: Routine Maintenance

    8 - Maintenance outine maintenance Routine maintenance operations should not be considered obligatory, but rather as recommended in order to maintain the efficiency of the PV system. It is recommended that maintenance operations are only performed by qualified personnel. The maintenance schedule may vary depending on the environmental conditions of the in- stallation premises.

  • Page 157: Troubleshooting

    8 - Maintenance roubleshooting Operations on the inverter to identify and address any faults may only be performed by the installer or by qualified personnel. nternal Webserver and wireless communication troubleshooting The following table gives a list of main and most common errors or problems relating to the wireless communication between inverter and user devices.
  • Page 158 ® Access the Internal Webserver using the “Host Name” that could be obtained writing this url http://ABB-XX-XX-XX-XX-XX-XX. local replacing the “X” with the hex digits of the wireless MAC address of the inverter (it can be found on the “Wireless Identifi- cation Label”...

  • Page 159: Alarm Messages Of The Inverter

    8 - Maintenance larm Messages of the Inverter In order to understand and resolve warning (Wxxx) or error (Exxx) sig- nals that appear in the Alarm section of the internal webserver or on the inverter’s display, follow the table given in the following paragraph. The equipment can notify errors/warnings in the Alarm section of the in- ternal webserver or on the display only if the input voltage is greater than the Vdcmin voltage (POWER Led flashing or lit;...
  • Page 160 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal • Check the grid voltage on the inverter. - Should it be absent, check for absence of grid voltage on the supply point. - If, on the other hand, the voltage tends to rise (when the in- verter is connected) there is high line or grid impedance.
  • Page 161 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal • Raise the value of the activation voltage (Vstart) if the prob- lem at the time of the inverter’s grid connection (Using the for- mulas 0,7*Vmp,stc or 0,6*Voc,stc).
  • Page 162 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal - W026 * Reset of the Arc Fault error: - AFDD user reset • The reset of the Arc Fault error is done directly by the cus- Manual reset of the Arc Fault error;...
  • Page 163 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal - E005 Communication error inside the inverter: • Error inside the inverter and cannot be checked externally. - Comm.Error The alarm occurs when there are communication prob- - If the problem (once the inverter has been switched off and Alarm LED lems between the control devices inside the inverter.
  • Page 164 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal • Measure the insulation resistance using a megohmmeter posi- High leakage current measured on the DC side tioned in the photovoltaic field (positive terminal short-circuited (photovoltaic generator): at the negative pole) compared to ground.
  • Page 165 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal Low value of insulation resistance: Before connecting to the grid the inverter measures the insulation resistance of the PV generator compared to ground. Should the measurement of the insulation resistance be below 1Mohm, the inverter does not con- •...
  • Page 166 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal Average of the measurements of grid voltage out- side of range: The average value of the grid voltage (sampled every 10 • Check the grid voltage in the connection point to the inverter. minutes) does not fall within the permitted ranges.
  • Page 167 8 - Maintenance - Code on display - Error message Name of Alarm and Cause Solution - Signal • If the problem has occurred during the installation phase or during the inverter maintenance phase (therefore the cover has been removed or the cable glands have been acted upon), carry out the following operations: - Disconnect the AC grid and DC input from the inverter and check for the front cover and all the cable glands, also check-...

  • Page 168: Power Limitation Messages

    8 - Maintenance ower limitation messages The equipment can signal possible output power limitations which may occur on the basis of: - settings made by the user - settings required by the grid standard of the country of installation - protective devices inside the inverter The messages are shown on the display.
  • Page 169 8 - Maintenance - Message on display Name of Derating and Cause Solution Power limitation due to excess temperature: The message indicates that a power limitation is active since • Check that the inverter is not exposed to direct an excess temperature condition has been recorded inside the sunlight.

  • Page 170: Dismantling The Inverter

    8 - Maintenance ismantling the inverter Before attempting any work on the inverter, wait for stored energy to be discharged and for parts to cool. • Open the external DC and AC disconnects switches. • Disconnect any power supplies that may be connected to the UNO-DM- COM KIT and UNO-DM-PLUS-COM ETHERNET KIT.

  • Page 171: Registration On "Registration" Website And Calculation Of Second-Level Password (Service Menu, Admin Plus)

    8 - Maintenance egistration on “Registration” website and calculation of second- level password (Service menu, Admin Plus) In order to obtain the second-level password needed to access the inverter's display service menu or to obtain the “Admin Plus” privileges in the internal webserver, it is necessary to go through the following stages: Stage 1 - Collection of information relating to the inverter.
  • Page 172 8 - Maintenance Stage 3 - Request for second level password - Go online and access https://registration.abbsolarinverters.com - Insert the Username (corresponding to the email used during registration) and the Password obtained at the end of Stage 2 - Access the section dedicated to requesting the second-level password - Choose the inverter model from the drop-down list and insert Update Ver., Serial Number and Week of Production of the inverter which were obtained previously (Stage 1)
  • Page 173 8 - Maintenance - Click on icon to request password. Should there be an error in inputting data, the fields containing the error will be highlighted in red. If, on the other hand, the data are correct, the passwords will be shown in a new window and at the same time sent to the email address used for registration.

  • Page 174: Resetting The Remaining Time For Grid Standard Variation From Display

    8 - Maintenance esetting the remaining time for grid standard variation from display From the moment a valid grid standard is set and the inverter is switched on, there is a time period of 24 hours available in which modifications to the grid standard setting can be made.

  • Page 175: Verification Of Ground Leakage

    8 - Maintenance erification of ground leakage In the presence of anomalies or report of ground fault (where provided), there may be a ground leakage from the PV generator (DC side). To check this, measure the voltage between the positive pole and ground and between the negative pole (of the PV generator) and ground using a voltmeter whose input accepts a voltage of at least 1000 Volts.

  • Page 176: Behaviour Of A System With Leakage

    8 - Maintenance ehaviour of a system with leakage If the voltage measured between one of the two poles and ground does not tend to 0V and stabilizes on a value, there is a ground leakage from the PV generator. Example: When the measurement is made between positive pole and ground, a voltage of 200V is measured.

  • Page 177: Measuring The Insulation Resistance Of The Pv Generator

    8 - Maintenance easuring the insulation resistance of the PV generator. To measure the insulation resistance of the PV generator compared to ground , the two poles of the PV generator must be short-circuited (using a suitably sized selector). Once the short-circuit has been made, measure the insulation resistance (Riso) using a megohmmeter positioned between the two shorted poles and ground (of the inverter).

  • Page 178: Storage And Dismantling

    ABB CANNOT be held responsible for disposal of the equipment (cables, batteries, etc.). The customer must dispose of these items, some of which be harmful to the environment, in accordance with the local regulations Dispose of the various types of materials at facilities that are suitable for the purpose.

  • Page 179: Attachments

    TCP connections. Direction Service/Port Protocol Description For remote debugging by ABB service personnel, the inver- ter utilizes encrypted SSH Remote Login Protocol. To allow ssh/22 service personnel remote access to the inverter, this port has to be opened in any firewall and forwarded to the inver- ter.

  • Page 180: Network Hosts

    Hosts The inverter will connect to the following hosts. Some servers owned by ABB, and others are customer or ISP servers. Servers listed as ow- ned by “Customer IT/ISP” must be configured in the inverter using either DHCP or as static network information.

  • Page 181: Further Information

    For further information on ABB products and services for solar systems, please refer to www.abb.com/solarinverters...

  • Page 182: Contact Us

    www.abb.com/solarinverters...

This manual is also suitable for:

Uno-dm-2.0-tl-plusUno-dm-1.2-tl-plusUno-dm-4.0-tl-plusUno-dm-4.6-tl-plusUno-dm-5.0-tl-plus

Table of Contents