ABB UNO-DM-TL-PLUS-US User manual

ABB solar inverters
Product Manual
UNO-DM-3.3/3.8/4.6/5.0-TL-PLUS-US
(from 3.3 to 5.0 kW)

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000705AG
IMPORTANT SAFETY INSTRUCTIONS
This manual contains important safety instructions that must be followed during installation,
operation and maintenance of the ABB photovoltaic inverter.
SAVE THESE INSTRUCTIONS!
Keep this document in a safe place near the inverter for easy access during installation, op-
eration and maintenance.
THE INSTALLER MUST READ THIS DOCUMENT IN ITS ENTIRETY BEFORE INSTALLING
THIS EQUIPMENT.
The purpose of this document is to support the qualied technician, who has received training
and/or has demonstrated skills and knowledge in construction, to install, operate and maintain
the inverter. This manual covers only inverter, not any equipment (photovoltaic modules, external
disconnects, etc) to which it is connected.
Warranty requirements are included in the Terms and Conditions of sale included with the
inverter order; these include proper installation, operation as intended by ABB, and periodic
preventative maintenance. NOTE: Any changes not approved by ABB void the warranty.
FCC REMARKS
The equipment has been tested and found to comply with the limits for a Class B digital de-
vice, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help.

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000705AG
Product Manual
UNO-DM-3.3/3.8/4.6/5.0-TL-PLUS-US string inverters
1 - Introduction and general information
2 - Characteristics
3 - Safety and accident prevention
4 - Lifting and transport
5 - Installation
6 - Instruments
7 - Operation
8 - Maintenance
UNO-DM-3.3/3.8/4.6/5.0-TL-PLUS-US-Product manual EN-Rev A (M000037AG)
EFFECTIVE 08/06/2017
© Copyright 2017 ABB. All Rights Reserved.

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000620AG
Warranty and conditions of sale
The terms and conditions of sale, including requirements for maintaining
the warranty, are sent with each order. Refer to the terms and conditions
when designing the site, installling the inverter and setting up a
preventative maintenance program.
In particular, pay attention to physical clearances, any site noise limitations,
maximum system input voltage, potential ammability hazards.
ABB accepts no liability for failure to comply with the instructions for correct installation and is
not responsible for equipment it has not supplied.
Any modication, manipulation, or alteration of the hardware or software, voids the warranty.
ABB is not liable for for defects or malfunctions arising from improper
use of the equipment, failures or problems due to shipping damage or
out-of-spec environmental conditions; lack of or incorrect preventative
maintenance, tampering or repairs; use or installation by unqualied
persons.
1
Introduction and general information

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000706AG
1- Introduction and general information
Table of Contents
Introduction and general information............................................................................................... 4
Warranty and conditions of sale...........................................................................................................4
Table of Contents....................................................................................................................................5
Scope and target audience....................................................................................................................9
Purpose...................................................................................................................................9
Additional information and documentation .............................................................................9
Operating and maintenance safety.........................................................................................9
Symbols and signs...............................................................................................................................10
Intended use..........................................................................................................................................11
Limitations in intended use ................................................................................................... 11
Improper or prohibited use ................................................................................................... 11
Features ............................................................................................................................................ 12
Introduction...........................................................................................................................................12
Models and range of equipment .........................................................................................................13
Identification of the equipment and manufacturer ................................................................13
Reference number index .....................................................................................................................16
Graphical representation of references.............................................................................................16
Accessory Board UNO-DM-COM KIT (optional)................................................................................17
Accessory Board UNO-DM-PLUS-COM Ethernet KIT (optional).....................................................17
Technical data .......................................................................................................................................18
Torques .................................................................................................................................22
Outer dimensions..................................................................................................................22
Bracket dimensions...............................................................................................................23
Efficiency curves ..................................................................................................................................24
Power limitation (Power Derating)......................................................................................................26
Power reduction due to environmental conditions................................................................26
Power reduction due to the input voltage .............................................................................27
Characteristics of a photovoltaic generator......................................................................................28
Strings and Arrays.................................................................................................................28
Description of the inverter...................................................................................................................29
Multiple-inverter system ........................................................................................................29
Notes on system sizing .........................................................................................................29
Inverter block diagram ..........................................................................................................29
PV plant block diagram........................................................................................................31
Operating diagram ................................................................................................................31
Dafault functionality and components of the inverter ..........................................................32
Functionalities availbable with accessory board .................................................................33
Safety devices.......................................................................................................................................35
Anti-Islanding ........................................................................................................................35
Photovoltaic panel ground fault ............................................................................................35
Arc Fault Detection (AFD).....................................................................................................35
Ground fault detection and interruption scheme .................................................................35
Other safeguards ..................................................................................................................36

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000706AG
1- Introduction and general information
Safety and accident prevention ..................................................................................................... 37
Safety information and instructions ..................................................................................................37
Signs and labels....................................................................................................................37
Environmental conditions and risks ......................................................................................38
Thermal and electrical hazards.............................................................................................38
Clothing and protection of personnel....................................................................................38
Residual risks .......................................................................................................................................40
Table of residual risks ...........................................................................................................40
Lifting and transport........................................................................................................................ 41
Transport and handling .........................................................................................................41
Lifting.....................................................................................................................................41
Unpacking and incoming inspection .....................................................................................41
Storage..................................................................................................................................42
Weights .................................................................................................................................42
Lifting.....................................................................................................................................42
Packing list ............................................................................................................................43
Installation ......................................................................................................................................... 44
Installation warnings ...........................................................................................................................44
Installation site and position..................................................................................................45
Installation sites with high humidity ......................................................................................46
Wireless signal environmental checks..................................................................................47
Recommendations for the wireless signal power.................................................................49
Wall mounting .......................................................................................................................................50
Opening the front cover.......................................................................................................................51
Installation planning.............................................................................................................................52
AC overcurrent protection.....................................................................................................52
Choice of grid output connection type (AC side) ..................................................................52
Sizing the ground cable(s) ....................................................................................................53
Sizing the AC cable...............................................................................................................53
Clamps terminal use .............................................................................................................54
Preliminary operations for connection of the PV generator ...........................................................55
Independent or parallel input channels configuration...........................................................55
Channel configuration examples ..........................................................................................56
Independent channel configuration (default configuration) ..................................................57
Parallel channel configuration ..............................................................................................57
Checking the correct polarity of the strings ..........................................................................58
Checking of leakage to ground of the photovoltaic generator..............................................58
Electrical connection to the PV field - DC side .................................................................................59
Grid output connection (AC side).......................................................................................................61
Connection to AC terminal block...........................................................................................61
Grid standard setting of the country......................................................................................62
Rapid Shutdown (RSD) connection....................................................................................................63
Communication and control signal connections to the accessory UNO-DM-COM KIT board ...64
Description of terminal blocks on the UNO-DM-COM KIT board ........................................65
Description of terminal blocks on the UNO-DM-PLUS-COM Ethernet KIT board ...............66
Connection of the RS485 line...............................................................................................................67
Remote control connection ...................................................................................................69
Demand Responce Mode 0 (Request by AS/NZS 4777).....................................................69
Configurable Relay connection (ALARM / LOAD MANAGER) ...........................................70
Closing the front cover ........................................................................................................................71

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000706AG
1- Introduction and general information
Instruments........................................................................................................................................ 72
Description of keyboard and LED Panel...............................................................................73
Operation.......................................................................................................................................... 74
Introduction and operation warnings ................................................................................................74
Monitoring and data transmission .....................................................................................................75
User interface........................................................................................................................75
Measurement tolerance ........................................................................................................75
Commissioning (Via internal Webserver)..........................................................................................76
Commissioning (Using the inverter display).....................................................................................84
Power, Alarm, GFI LEDs behavior ......................................................................................................86
Specifications on operation of the LEDs...............................................................................87
LED insulation fault ...............................................................................................................87
COMM Status, RSSI LEDs behavior ...................................................................................................87
Description of the internal Webserver ...............................................................................................88
Access to the internal Webserver.........................................................................................88
webserver menu structure ....................................................................................................91
MAIN section.........................................................................................................................92
SETUP section......................................................................................................................93
EVENTS Section...................................................................................................................95
USER section........................................................................................................................96
NETWORK section ...............................................................................................................97
TOOLS section....................................................................................................................102
INFORMATION Section...................................................................................................... 111
Description of the Display menus ....................................................................................................112
General information ............................................................................................................ 112
Menu structure .................................................................................................................... 113
System Menu ......................................................................................................................114
Inverter Menu......................................................................................................................116
Display Menu ......................................................................................................................128
WLAN Logger Menu ...........................................................................................................129
Maintenance................................................................................................................................... 130
Introduction and maintenance warnings.........................................................................................130
Routine maintenance .........................................................................................................................131
Troubleshooting .................................................................................................................................132
Internal Webserver and wireless communication troubleshooting.....................................132
Inverter alarm codes ...........................................................................................................134
Power limitation messages .................................................................................................143
Dismantling the inverter ...................................................................................................................145
Calculation of second-level password (Service menu, Admin Plus) ...........................................146
Resetting the remaining time for grid standard variation from display.......................................147
Verification of ground leakage .........................................................................................................148
Behavior of a system without leakage ................................................................................148
Behavior of a system with leakage .....................................................................................149
Measuring the insulation resistance of the PV generator. ............................................................150
Storage and dismantling ..................................................................................................................151
Storage of an uninstalled inverter for long periods.............................................................151
Storage of an installed inverter for long periods of non-use...............................................151
Disposal...............................................................................................................................151

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000706AG
1- Introduction and general information
Attachments ................................................................................................................................... 152
Port and network services used by the inverter.............................................................................152
IP Network Services............................................................................................................152
Network Hosts.....................................................................................................................153
Inverter network configuration ............................................................................................153
Further information ............................................................................................................................154
Contact us ...........................................................................................................................................155

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000622BG
1- Introduction and general information
Scope and target audience
Purpose
This product manual is a useful guide that will enable workers to safety
operate the invereter and maintain it in good working order.
If the equipment is used in a manner not specied in this manual, the protection provided by
the equipment may be compromised.
Additional information and documentation
In addition to this product manual , one may download additional product
documentation, including the Auroral Manager software required for
comumunicating with the inverter, by visiting www.abbsolarinverters.com.
The ABB solar inverter help desk may be reached at 1-877-261-1374, 6am - 6pm (PST)
Monday-Friday. excluding major holidays.
Operating and maintenance safety
Personnel in charge of using and maintaining the inverter must be
properly qualiied and educated for the tasks, and must be able to read
and correctly interpret this product manual.
The installation must be performed by qualied installers and/or licensed
electricians, with experience in photovoltaic systems. Installation must
be in accordance with the NEC and any other local electrical codes.
The local electrical utility and/or authority having jurisdiction, AHJ, must
approve any installation before it is connected to the electrical grid
Anyone working on or around the photovoltaic system, especially the
inverter, must choose and use appropriate personal protective equipment
(PPE).

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000623BG
1 - Introduction and general information
Symbols 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
General warning - Important safety information. Indicates a potentially
hazardous situation which, if not avoided, could result in death or serious
injury.
Dangerous Voltage - Indicates a potentially hazardous situation, in
particular a high voltage, which, if not avoided, could result in death or
serious injury. The inverter has high voltages and energy levels.
Hot parts - Indicates a potentially hazardous situation, in particular a
hot surface, which, if not avoided, could result in death or serious injury.
Some surfaces in the inverter will become hot during operation and must
not be touched until the parts have cooled down.
Risk of injury due to the weight of the equipment. Take care during lifting
and transport
Indicates that it is mandatory to carry out the described operations
using the clothing and/or personal protective equipment provided by the
employer.
System ground conductor connection point.
Equipment Grounding Conductor (EGC) connection point.
Rated temperature range.
DC
Direct current
AC
Alternating current
ØPhase
The DC input voltage positive terminal
The DC input voltage negative terminal