ABB UNO-DM-2.0-TL-PLUS Manual
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ABB UNO-DM-2.0-TL-PLUS Manual

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ABB solar inverters
Product Manual
UNO-DM-1.2/2.0/3.0/3.3/4.0/4.6/5.0-TL-PLUS
(from 1.2 to 5.0 kW)

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Summary of Contents for ABB UNO-DM-2.0-TL-PLUS

  • Page 1 ABB solar inverters Product Manual UNO-DM-1.2/2.0/3.0/3.3/4.0/4.6/5.0-TL-PLUS (from 1.2 to 5.0 kW)
  • Page 2 ABB and its affiliates are not liable for damages and/or losses re- lated to such security breaches, any unauthorized access, interference, intrusion, leakage and/or theft of data or information.
  • Page 3 3 - Characteristics 4 - Lifting and transport 5 - Installation 6 - Instruments 7 - Operation 8 - Maintenance 9 - Attachments UNO-DM-1.2/2.0/3.0/3.3/4.0/4.6/5.0-TL-PLUS-Product manual EN-Rev F (M000036FG) EFFECTIVE 21/05/2019 © Copyright 2019 ABB. All Rights Reserved. - 3 -...

  • Page 4: Table Of Contents

    Accessory Board UNO-DM-COM KIT ....................19 Accessory Board UNO-DM-PLUS-COM Ethernet KIT ..............20 REACT-MTR-1PH energy meter ......................21 ABB B23, B24 3PH energy meter ......................21 ABB B21 1PH energy meter ........................22 Models and range of equipment ......................23 Identification of the equipment and manufacturer ..............24 Characteristics and technical data .....................26...
  • Page 5 Description of the equipment ......................39 Operating diagram ........................39 Mutual connection of multiple inverters ................40 Notes on the system sizing ....................40 Operating diagram ..........................41 Functionality and components of the equipment ..............42 Topographic diagram of the equipment ................45 Safety devices ............................48 Anti-Islanding ........................48 Ground fault of the photovoltaic panels ................48 Other safety devices ......................48 ifting and transport ........................
  • Page 6 Connection of the energy meter ......................85 Connection of the REACT-MTR-1PH (single-phase) ............85 Connection and configuration of the ABB B21 meter (single-phase) ........87 Connection and configuration of the ABB B23, B24 3PH (three-phase) ......90 Closing the front cover ........................93 nstruments ............................94 General conditions ..........................94...
  • Page 7 aintenance ........................... 157 General conditions ..........................157 Inverter total de-energization and safe access ................158 Operator and maintenance personnel skills/prerequisites ..........158 Clothing and protection of personnel ..................159 Safety equipment and tools ....................159 Inverter total de-energization and safe access procedure ..........160 Routine maintenance .........................170 Troubleshooting ..........................171 Web user interface and wireless communication troubleshooting ........171 Alarm Messages of the Inverter ..................173...

  • Page 8: Afety And Accident Prevention

    The operators must read and comply with the technical information and instruction provided in the manual and in the attached documentation. ABB accepts no liability for failure to comply with the instructions for correct installation and cannot be held responsible for the upstream or downstream equipment.

  • Page 9: Symbols And Signs

    1 - Safety and accident prevention 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 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 10 1 - Safety and accident prevention Symbol Description Risk of electric shock. The discharge time of the stored energy (repre- sented in the figure by the letters XX), is provided on the identification label. Direct Current Alternate current With isolation transformer Without isolation transformer Positive pole of the input voltage (DC) Negative pole of the input voltage (DC)

  • Page 11: Installation And Maintenance Safety

    1 - Safety and accident prevention nstallation and maintenance safety eneral safety information Do not proceed with installation if the integrity of the equipment is compromised. Do not use the equipment if you find any operating anomalies. Avoid temporary repairs. All repairs should be carried out using only genuine spare parts, which must be installed in accordance with their intended use.

  • Page 12: Electrical And Thermal Safety

    Do not perform insulation or voltage withstand tests on the inverter. ABB inverters must be earthed via the connection points marked with the protective earth symbol and using a cable with an appropriate conductor cross-section for the maximum ground fault current that the generating system might experience.

  • Page 13: Residual Risks

    1 - 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 in the following table with some suggestions to prevent them. able of residual risks RISK ANALYSIS AND DESCRIPTION SUGGESTED REMEDY Noise pollution due to installation in unsuitable environments or where...

  • Page 14: I Ntroduction 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 15: Scope And Target Audience

    2 - Introduction and general information cope and target audience urpose and document structure 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. If the equipment is used in a manner not specified in this manual, the protections and the cer- tifications provided by the equipment may be impaired with the consequent loss of warranty.

  • Page 16: Application Area, General Conditions

    2 - Introduction and general information pplication area, general conditions ABB shall not be liable for any damages whatsoever that may result from incorrect 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: Haracteristics

    Characteristics eneral conditions A description of the equipment characteristics is provided to identify its main components and specify the technical terminology used in the ma- nual. This chapter contains information about the models, details of the equipment, characteristics and technical data, overall dimensions and equipment identification.

  • Page 18: Reference Number Index

    3 - Characteristics eference number index , Bracket , Keyboard , DC disconnect switch , Heat sink , DC input connectors (Only for -S models) , Anti-condensation valve , AC output connector , UNO-DM-COM KIT Card , Front cover (Only for -X and -E models or as op- , Wireless antenna connector tional accessory) , LED panel...

  • Page 19: Accessory Board Uno-Dm-Com Kit

    3 - Characteristics ccessory Board UNO-DM-COM KIT (Only -X models or as optional accessory) , Inverter connector , Fixing hole , DRM0 activation jumper , ALARM terminal block , RS485 Termination line jumper , RS485 and REM terminal block - 19 -...

  • Page 20: Accessory Board Uno-Dm-Plus-Com Ethernet Kit

    3 - Characteristics 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 - 20 -...

  • Page 21: React-Mtr-1Ph Energy Meter

    IN PU T : 11 0/ 23 0 V 50 /6 0 Hz 10 mA ma BB B23, B24 3PH energy meter , ABB B23, B24 , terminal block for three-phase connection , METER RS485 serial terminal block 3PH Meter - 21 -...

  • Page 22: Abb B21 1Ph Energy Meter

    3 - Characteristics BB B21 1PH energy meter , ABB B21 1PH meter , AC power supply terminal block , METER RS485 serial terminal block - 22 -...

  • Page 23: Models And Range Of Equipment

    3 - Characteristics odels and range of equipment The models of single-phase inverters covered by this manual are divided for their maximum output power: 1.2kW, 2.0kW, 3.0kW, 3.3kW, 4.0kW, 4.6kW and 5.0kW. For each model, the following variants are available (suffix could be com- bined): - Models with “B”...

  • Page 24: Identification Of The Equipment And Manufacturer

    3 - 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 25 3. WLAN Board MAC address: - To be used to obtain the SSID of the wireless access point created by the inverter: ABB-XX-XX-XX-XX-XX-XX (where “X” is a hex digit of the MAC address). - To be used to obtain the “Host Name”: http://ABB-XX-XX-XX-XX-XX- XX.local (where “X”...

  • Page 26: Characteristics And Technical Data

    3 - Characteristics haracteristics and technical data UNO-DM-1.2 UNO-DM-2.0 UNO-DM-3.0 Input Side Absolute maximum DC input voltage (Vmax,abs) 600 V 120 V 150 V 150 V Start-up DC input voltage (Vstart) (adj. 100V...150V) (adj. 100…250 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...
  • Page 27 (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 power of 3600W and maximum apparent power of 3600 VA.
  • Page 28 3 - Characteristics UNO-DM-3.3 UNO-DM-4.0 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) 3500 W...
  • Page 29 (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 power of 3600W and maximum apparent power of 3600 VA.
  • Page 30 3 - Characteristics UNO-DM-4.6 UNO-DM-5.0 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 31 IEC 62116 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 power of 3600W and maximum apparent power of 3600 VA.

  • Page 32: Tightening Torques

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

  • Page 33: Bracket Dimensions

    3 - Characteristics racket dimensions The dimensions of the wall mounting bracket are expressed in 33.25 86.75 31.75 31.75 86.75 SIDE VIEW SECTION VIEW (A-A) 50.25 - 33 -...

  • Page 34: Efficiency Curves

    3 - Characteristics fficiency curves The equipment was designed considering current energy conservation standards, to avoid waste and unnecessary leakage. 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.
  • Page 35 3 - 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 - 35 -...

  • Page 36: 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 @ Vacr, Vdcr 100%(Pacr) UNO-DM-1.2-TL-PLUS UNO-DM-2.0-TL-PLUS UNO-DM-3.0-TL-PLUS 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 37: Power 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. For UNO-DM-3.3/4.0/4.6/5.0-TL-PLUS models the graphs shows the va- lues with parallel input channel configuration. Pout Vs Vin UNO-DM-1.2-TL-PLUS UNO-DM-2.0-TL-PLUS UNO-DM-3.0-TL-PLUS UNO-DM-3.3-TL-PLUS UNO-DM-4.0-TL-PLUS UNO-DM-4.6-TL-PLUS UNO-DM-5.0-TL-PLUS...

  • Page 38: Characteristics Of A Photovoltaic Generator

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

  • Page 39: 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 40: 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). - 40 -...

  • Page 41: Operating Diagram

    3 - 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 42: Functionality And Components Of The Equipment

    Touch with IOS and An- droid operating systems. 4. ABB Ability™ for solar plants - Energy Viewer is an easy to use mobile application allowing solar plant owners to remotely monitor all the energy flows and the performance of their own pv plants, with and with- out an energy storage system installed.
  • Page 43 The Modbus RTU/TCP register map is the same for all the communication interfaces (Ether- net, RS-485 and Wireless communication) of the inverter. Please refer to ABB solar official website or get access to Sunspec alliance website for getting the Modbus register map supported by the inverter.
  • Page 44 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 through the internal web user interface, can limit the amount of active power fed into the grid by the inverter to the desired value (expressed as a percentage).

  • Page 45: Topographic Diagram Of The Equipment

    3 - Characteristics opographic diagram of the equipment The diagram summarises the internal structure of the inverter. The internal circuitry is double stage conversion and therefore consists - 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 46 3 - Characteristics - 46 -...
  • Page 47 3 - Characteristics - 47 -...

  • Page 48: Safety Devices

    3 - 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 49: Ifting And Transport

    ABB usually stores and protects individual components by suitable me- ans to make their transport and subsequent handling easier, but as a rule, it is necessary to utilize the experience of specialized staff in change of loading and unloading the 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 (Spare part) T20 screw for front cover T20 screws for wall bracket locking...

  • 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-1.2/2.0/3.0/3.3/4.0/4.6/5.0-TL-PLUS 15 kg / 33 lb - 51 -...

  • Page 52: I Nstallation

    Installation eneral conditions The device is intended to be installed in a suitable plant for its use and its purpose. All the installation instruction described in this chapter must be followed considering the plant structure where the device is intended to be installed. Its performance therefore depends on the correctness of the installation.

  • 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 Do not open the inverter in case of rain, snow or high humidity (>95%). During installation do not place the inverter with the front cover facing the ground. Install the inverter by following this procedure: •...

  • 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 • located on the bottom part of the inverter.

  • Page 60: Opening The

    5 - Installation pening the front cover WARNING! ELECTRIC SHOCK HAZARD! Some inverter parts may be subject to voltages that could be hazardous for the operator. Before performing any work on the inverter, refer to “Inverter total de-energization and safe access” chapter on this manual to know all the necessary steps to safely operate on the inverter.

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

    All ABB string inverters marketed in Europe are equipped with a device for protection against ground faults in accordance with the safety standard IEC 62109-2, sections 4.8.2 and 4.8.3 of the Standard (equivalent to Standard DIN V VDE V 0126-1:2006, section 4.7).
  • Page 62 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 A NECESSARY condition so that the two The photovoltaic generator consists 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 5 - Installation Connect all the strings required by the system, always checking the seal of the connectors. 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

    - Amphenol H4. Please refer to the document “String inverters – Product manual ap- pendix” available at www.abb.com/solarinverters for information on the quick-fit connector brand and model used in the inverter. The model of connectors installed on your inverter must be matched by...
  • Page 69 5 - Installation 2. WEIDMÜLLER WM4 quick-fit connectors Installation of Weidmüller WM4 connectors requires crimping to be carri- ed 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 carri- ed 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, neu- tral, 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 cross section Line conductor maximum length (m) (mm²) UNO- UNO- UNO- UNO- UNO- UNO- UNO- DM-1.2 DM-2.0 DM-3.0 DM-3.3 DM-4.0 DM-4.6...

  • 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

    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

    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

    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 web user interface 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 web user interface (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 up to 30 A. • ABB B21 for single-phase supplies up to 65 A. • ABB B23 for three-phase supplies up to 65 A (it can be used for single-phase supplies if correctly installed).
  • 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-1PH signal terminal block of the Accessory Board +T/R...

  • Page 87: Connection And Configuration Of The Abb B21 Meter (Single-Phase)

    (single-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 B21. The energy meter ABB B21 is a DIN rail device (2 modules) and must be installed where the electricity supply is single-phase.
  • Page 88 5 - Installation • Connect the cables of the serial line A (37), B (36) and C (37) on the ter- minal block set on the rear of the ABB B21 and tighten the screws (tightening torque 0.25 Nm). Subsequently the cable must be connected inside the inverter on the...
  • Page 89 5 - Installation The settings are made by using the keypad and the display on the meter: 1. Press for two seconds to access the setup menu of the meter. 2. Press repeatedly until the display shows “Set”. - Press to confirm.

  • Page 90: Connection And Configuration Of The Abb B23, B24 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 or B24 3PH meter. The energy meter ABB B23, B24 3PH is a DIN rail device (4 modules) and must be installed where the electricity supply is three-phase.
  • Page 91 5 - Installation It’s possible to use the three-phase meter ABB B23, B24 as a single-phase meter. To use the ABB B23, B24 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 92 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 93: 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 94: I Nstruments

    We, therefore, advise that you carefully read this manual. If you are not sure about any information in this manual, please ask ABB Service for more detailed information. Do not use the equipment if: - you do not have suitable qualifications to work on this equipment or similar products;...

  • Page 95: 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 96: 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 97: Peration

    Operation eneral conditions Before checking the operation of the equipment, it is necessary to have a thorough knowledge of the Instruments chapter 6 and the functions that have been enabled in the installation process. The equipment operates automatically without the aid of an operator; the operating state should be controlled through the equipment’s instrumentation.

  • Page 98: Commissioning (Via Web User Interface)

    The name of the wireless network created by the system that the con- Remove and apply on the Quick nection should be established with, will be: ABB-XX-XX-XX-XX-XX-XX installation guide where “X” is a hex digit of the wireless MAC address...
  • Page 99 7 - Operation Pre-commissionig phase 2 - Internal web UI access DEVICE USED TABLET/SMARTPHONE: • SCAN this QR code (it is also reported in the Quick installation guide and in the pre-commissioning flyer inside the box of the inverter). DEVICE USED LAPTOP: •...
  • Page 100 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 101 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 102 7 - Operation Once the inverter is connected to the domestic wireless network, a new message will confirm that the connection is acquired. The message provides the IP Address assigned by the home wireless network router to the inverter that can be used each time you want to access the internal web user interface with the inverter connected to the home wireless network.
  • Page 103 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 104 3. ABB 1PH (single-phase) 4. ABB 3PH (three-phase) If a 3PH energy meter (ABB B23, B24) is used in the system as single-phase inverter, it will be necessary to select ABB 3PH and the phase to which the inverter is connected.
  • Page 105 (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 106 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 107: Commissioning (Using The Inverter Display)

    - Selection of grid standard (and corresponding display language). 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 “System >...
  • Page 108 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 109: 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 110: 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 111: Description Of The Web User Interface

    Firefox versions from v.50) and enter the IP Address assigned by the router to the inverter, or 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 Identification Label”...
  • Page 112 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 113 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 web user interface (and it will be possible to change the password) by entering the PRODUCT KEY (printed on the “Wireless identification label”...

  • Page 114: Web User Interface Menu Structure

    7 - Operation eb user interface menu structure The following screenshots are related from a laptop visualization, may differ from smartphone or tablet visualization. The Web user interface is divided in six main sections, available on the left sidebar: MAIN: Main section of web user interface dedicated to viewing the sum- mary informations related the status and the production informations of the inverter and photovoltaic plant.

  • Page 115: 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 116: 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 117 7 - Operation 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 118: 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. - 118 -...

  • Page 119: User Section

    7 - Operation SER section In the USER section it’s possible to logout from web user interface 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 user...

  • Page 120: Network Section

    7 - Operation ETWORK section In the NETWORK section it’s possible to access the following sub-me- nus: • RS485 • WLAN Status • Modbus TCP • Debug Settings RS485 In the RS485 sub-menu it’s possible to adjust the settings relating to the RS485 communication serial line: •...
  • Page 121 7 - Operation WLAN Status In the WLAN Status sub-menu it’s possible to view operation status and the information about the WLAN board for both of wireless channel and to switch between the two operation mode (“Station Mode” or “AP Mode”). Wireless channel 1 is always active and it’s dedicated to operate in Access Point mode only.
  • Page 122 7 - Operation Once the inverter is connected to the domestic wireless network, a new message will confirm that the connection is acquired. The message provides the IP Address assigned by the home wireless network router to the inverter that can be used each time you want to access the web user interface, with the inverter connected to the home wireless network.
  • Page 123 “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. - 123 -...

  • Page 124: Tools Section

    2. REACT-MTR-1PH (single-phase) 3. ABB 1PH (single-phase) 4. ABB 3PH (three-phase) If a 3PH energy meter (ABB B23, B24) is used in the system as single-phase inverter, it will be necessary to select ABB 3PH and the phase to which the inverter is connected.
  • Page 125 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 manages power flows in or- der to maximise self-consumption. All unused power Self from domestic loads will feed into the grid.
  • Page 126 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 127 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 128 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 129 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 130 7 - Operation • Load Manager - “Load Management”: Load Manager functionality allows you to define configurable power thresholds for which 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 131 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 132 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 133 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 134 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 135: Information Section

    7 - Operation NFORMATION Section In the INFORMATION Section it’s possible to view the general informa- tions about the embedded web user interface. it’s possible to access the following sub-menus: • Privacy Policy • Provider Information/Impressum • Acknowledgments • Relase Notes - 135 -...

  • Page 136: 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 137: 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 138: 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 139 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 140: 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 141 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 142 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 143 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 144 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 145 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 146 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 147 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 148 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 149 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 150 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 151 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 152 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 153 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 154: 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 155: 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 156 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 157: Aintenance

    Maintenance eneral conditions Routine and periodic maintenance operations must only be carried out by specialized staff with knowledge of how to perform these tasks. Some inverter parts may be subject to voltages that could be hazardous for the operator. Before performing any work on the inverter, refer to “Inverter total de-energization and safe access”...

  • Page 158: Inverter Total De-Energization And Safe Access

    8 - Maintenance nverter total de-energization and safe access The purpose of this chapter is to provide instructions for de-energize the UNO-DM-PLUS models in order to allow access to active parts inside the inverter. The procedure describes the steps to perform a total isolation and thus includes operations on devices that are located outside the inverter.

  • Page 159: Clothing And Protection Of Personnel

    8 - Maintenance lothing and protection of personnel The following Personal Protective Equipment (PPE) are required to perform any intervention on the inverter: • Dielectric helmet EN397 – EN50365 (1000Vac-1500Vdc) with visor EN166 grade 8. • Insulating composite gloves class 0 EN60903 (1000Vac-1500Vdc) resistant to electric arc class 2 (7kA) EN61482-1-2 in combination with protective overglove in leather EN420 –...

  • Page 160: Inverter Total De-Energization And Safe Access Procedure

    8 - Maintenance nverter total de-energization and safe access procedure - 160 -...
  • Page 161 8 - Maintenance When the device has just been switched off, it may have hot parts as a result of overheating of the heated surfaces (e.g.: transformers, accumulators, coils, etc.) so be careful where you touch. Some inverter parts may be subject to voltages that could be hazardous for the operator. Before performing any work on the inverter, follow this procedure for safely isolate the inverter.
  • Page 162 8 - Maintenance 4. Operations on External AC switches The diagram below represents a possible arrangement of the PV plant. Depending on the design choices made by the developer of the plant some of the devices could not be present. Identify the external AC switch(es) in the plant with the support of the plant manager.
  • Page 163 8 - Maintenance 5. Operations on External DC switches (if present) Note: In case of absence of External DC disconnect device skip this step. The diagram below represents a possible arrangement of the PV plant. Depending on the design choices made by the developer of the plant some of the devices could not be present.
  • Page 164 8 - Maintenance 6. Operations on Internal DC disconnect switch • Open the internal DC switch (blue in the below picture). INVERTER 1 (Unit under service) OPEN LOTO LV/MW Internal DC Transformer Switch OPEN+LOTO OPEN+LOTO External DC External LV External Main LV MW Switch Switch AC Switch...
  • Page 165 8 - Maintenance The below picture represents the expected status of the switches in the plant after the switching operations have been completed. INVERTER 1 (Unit under service) OPEN LOTO LV/MW Internal DC Transformer Switch OPEN+LOTO OPEN+LOTO External DC External LV External Main LV MW Switch Switch...
  • Page 166 8 - Maintenance 7. Remove the DC quick fit connectors • Using the current clamp check the absence of current on DC side, measurement each positive and negative DC input string cables (check the correct setting of the current sensor). •...
  • Page 167 8 - Maintenance 10. Voltage absence test on DC side Before to approach the below operations all the steps from1 to 9 included must be successfully completed. Using the voltage detector, check the absence of voltage on the DC terminal connectors between: •...
  • Page 168 8 - Maintenance 12. Voltage absence test on bulk capacitor Check the absence of voltage on the bulk capacitor using the voltage detector. The voltage absence test on bulk capacitor must be carried out on the inverter main board, on the terminals of C217 capacitor as shown in the picture below.
  • Page 169 8 - Maintenance 13. Check list to be filled prior the access to the inverter • Purpose of the checklist is to verify that all the operations mentioned in the procedure have been carried out. The checklist below must be attached to the intervention report. CHECK STATUS √...

  • Page 170: Routine Maintenance

    To preserve long term proper operation of the inverter, you are advised to perform the routine maintenance operations listed in this chapter. Maintenance operations shall be performed only by qualified personnel or ABB personnel (under a servicing contract). The maintenance schedule may vary depending on the envi- ronmental conditions of the installation.

  • Page 171: 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. eb user interface 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 172 IP Address in “NETWORK > WLAN” section. Access the Web user interface using the “Host Name” that could be obtained writing this url http://ABB-XX-XX-XX-XX-XX-XX. An incorrect dynamic IP address is being local replacing the “X” with the hex digits of the wireless MAC used to access the Web user interface or address of the inverter (it can be found on the “Wireless Identifi-...

  • Page 173: 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 web user interface 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 web user interface or on the display only if the input voltage is greater than the Vdcmin voltage (POWER Led flashing or lit;...
  • Page 174 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 175 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 176 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 177 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 178 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 179 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 180 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 181 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 182: 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 183 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 184: Dismantling The Inverter

    8 - Maintenance ismantling the inverter The dismantling operations must be carried out with the equipment disconnected from any voltage sources. Refer to “Inverter total de-energization and safe access” chapter on this manual to know all the necessary step to safely operate on the inverter. Staff authorised to carry out the dismantling operations must be specialised and experienced in this job.

  • Page 185: Replacement Of The Memory Board

    8 - Maintenance eplacement of the MEMORY board Some inverter parts may be subject to voltages that could be hazardous for the operator. Before performing any work on the inverter, refer to “Inverter total de-energization and safe access” chapter on this manual to know all the necessary step to safely operate on the inverter. Replacing the MEMORY board may be necessary in the following circumstances: Inverter log Statistic (e.g.

  • Page 186: Replacement Of The Buffer Battery

    8 - Maintenance eplacement of the buffer battery Some inverter parts may be subject to voltages that could be hazardous for the operator. Before performing any work on the inverter, refer to “Inverter total de-energization and safe access” chapter on this manual to know all the necessary step to safely operate on the inverter. Replacing the buffer battery may be necessary in the following circumstances: 1.

  • Page 187: 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 web user interface, it is necessary to go through the following stages: Stage 1 - Collection of information relating to the inverter.
  • Page 188 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 189 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 190: 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 191: 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 sufficient for the dimensions of the photovoltaic generator.

  • Page 192: 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 193: Measuring The Isolation Resistance Of The Pv Generator

    8 - Maintenance easuring the isolation resistance of the PV generator. To measure the isolation 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 isolation resistance (Riso) using a megohmmeter positioned between the two shorted poles and ground (of the inverter).

  • Page 194: 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 195: Ttachments

    TCP connections. Direction Service/Port Protocol Description For local debugging by ABB service personnel, the inverter ssh/22 utilizes encrypted SSH. To allow service personnel local ac- cess to the inverter. The inverter must be able to resolve domain names, to en-...

  • Page 196: 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 197: Further Information

    For more information on ABB solar products and services, visit www.abb.com/solarinverters - 197 -...

  • Page 198: Contact Us

    www.abb.com/solarinverters...

This manual is also suitable for:

Uno-dm-1.2-tl-plusUno-dm-3.0-tl-plusUno-dm-3.3-tl-plusUno-dm-4.0-tl-plusUno-dm-4.6-tl-plusUno-dm-5.0-tl-plus

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