ABB UNO-2.0-I-OUTD-US Quick Installation Manual Download Page 1

In addition to what is explained in this guide, the safety and installation 

information provided in the technical manual must be read and followed.

The technical documentation and the interface and management software for 

the product are available at the website.

Quick installation guide

UNO-2.0/2.5-I-OUTD-S-US

Solar inverters

1.

Labels and symbols

4.

Installation location

Electrical warnings

2.

List of components

3.

W

all or pole mounting

5.

Open the covers

6.

EN

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS-KEEP IN SAFE PLACE!

The installer must read this document in its entirety before installing or commissioning this equipment!

The labels on the UNO inverter carry the markings, main technical data and identification of the equipment and manufacturer.  

The technical data shown in this quick installation guide does not replace that shown on the labels attached to the equipment.

UNO-X.X-I-OUTD-X

P/N:PPPPPPPPPPP  SN:SSSSSSSSSS WK:WW/YY 

XXXXXXXXX  Q1

 3

 6

 7

 8

UL 1741

CSA-C22.2 No. 107.1-01

C

US

®

Country of Origin Italy

www.abb.com/solar

SOLAR UTILITY INTERACTIVE INVERTER

MODEL: UNO-2.5-I-OUTD-S-US

This device complies with Part 15 of the FCC Rules. Operation is subject to the

following two conditions: (1) this device may not cause harmful interference, and 

(2) this device must accept any interference received, including interference that 

may cause undesidered operation.

For more details about product specifications refer to the Instruction Manual

:)

 (

:)

 (

1

2

Adjustable from 57.0 Hz to 59.7 H                      Adjustable from 60.5 Hz to 63.0 Hz  

Nominal Input Operating Voltage
Max. Input Voltage
Range of Input Operating Voltage
Range of Input Voltage @Full Power
Max. Input Current

Max. Input Short Circuit Current (P.V. Panels)

DC RATING

Nominal Output Voltage
Operating Voltage Range
Nominal Output Frequency
Operating Frequency Range
Output Power Factor
Max. Output Current (for each phase)

AC RATING

Max. Continuous Output Power
Max. Output Overcurrent Protection

12.8 A

16 A

340 V

520 V

90 - 520 V

200 - 470 V

60 Hz (factory preset)

59.3 ( ) - 60.5 ( ) Hz

1

2

>0.995

10.5 A / 12 A / 12 A (rms)

277 V~ / 240 V~ / 208 V~ 1Ø

15 A

2500 W @ 45°C amb.

244-304 V~/211-264 V~/183-228 V~

DC Ground Fault Detector/Interrupter is Provided

Operating Ambient Temperature: -25 to +60 °C (-13 to +140 °F), with Output Power Derating
Type of Enclosure: NEMA 4X

1

2

3

4

5

1

Certification

2

Product origin

3

Model type and number

4

DC input ratings

5

AC output ratings

6

Inverter part number

7

Inverter serial number

8

Week/year of manufacture

• 

Wiring methods used should be in accordance with the National Electric Code, ANSI/NFPA 70 (NEC), Canadian Electric Code (CEC), and/or 

other local codes and regulations.

• 

The PV source conductors must be Listed PV wire per NEC 690.35. 

• 

PV output conductors must consist of sheathed (jacketed) multi-conductor cables or installed in an approved raceway and must be isolated 

from the enclosure and system grounding, as required by NEC  690.35 and is the responsibility of the installer. 

• 

An external DC switch must be used if not integrated in the inverter; all -S models have an integrated DC switch.  

• 

AC output overcurrent protection is not provided; it is the responsibility of the end user to provide protection for the AC output circuit.  

• 

All photovoltaic source and output circuit conductors shall have disconnects complying with the NEC, Section 690, Part III.  

•  To reduce the risk of fire, connect only to a circuit provided with 15A maximum branch circuit overcurrent protection in accordance with the 

NEC (ANSI/NFPA 70). See Maximum AC OCPD requirement in section 16 on next page.

• 

To prevent electrical hazards, all the connections must be  carried out with the disconnect switch downstream of the inverter  

(grid side) open and locked out.

Components shipped with all models

QTY

3  pin  connector  for  configurable 

 

relay, 82000005907-G

2

8 pin connector for communication 

and control signals, 82000005908-G

2

L-key, TORX TX20

81510000077

1

Components shipped with all models

QTY

Mounting Kit, XAK.V0E10

includes:

1 bracket for wall mounting

5 anchors and screws 

2 locking screws for securing 

wiring box to bracket

1

Choose the installation location and position to comply with the following:

• 

Install on a wall or strong structure capable of bearing the weight.

• 

Install vertically with a maximum incline of +/- 5°.  

• 

Maintain minimum clearance measurements shown. 

• Choose a location that allows unobstructed airflow around the inverter.

• 

When possible, install at eye level so the display and status LEDs can be    

    easily seen.

• Ensure sufficient working area in front of the inverter to allow removal of the   

    wiring box cover and easy access for servicing the inverter.

• See technical data, section 16, to check the environmental parameters to be  

    observed (degree of protection, temperature, humidity, altitude, etc.).

• 

Select a well-ventilated location sheltered from direct sun radiation or any            

   other heat source (other inverters). 

• 

Exposure to direct sunlight will increase operational temperature of the inverter and may cause output power limiting. 

•  It is recommended to use a sun shade to minimize direct sunlight when ambient air temperature around the unit exceeds 104°F/40°C

.

• 

Position multiple inverters side-by-side, maintaining minimum clearances.   

• 

Multiple inverters can also be placed in a staggered arrangement. 

 

Minimum clearances illustrated for staggered 

arrangement includes width of inverter plus 

additional allowances for inverters arranged 

above or below.  

This minimizes heat dissipation from lower 

inverters affecting operation of other inverters. 

14

 in

  6

 in

 6 in

  6 in

Direct sunlight use caution

Air flow restricted use caution

Side-by-side arrangement

Staggered arrangement

6”

6”

27”

27”

27”

Side-by-side arrangement

Staggered arrangement

6”

6”

27”

27”

27”

The location of the mounting holes is based on the mounting surface:

• 

Group 

A

 holes are used for pole mount.

• 

Group 

B

 holes are used for wall mount.

• 

Position and level the bracket.

• 

Mark the holes appropriate to the type of mounting surface.

•  Drill the holes required using a 10mm/0.39” bit; the holes must be about      

  

       70mm/2.75” deep.

•  Fix the bracket to the poll/wall with the wall anchors, 10mm/0.39” in diameter,  

  

     supplied.

• 

Hook the inverter to the bracket by inserting head of the inverter rear screws  

  

      and the anchor point on the wiring box, in the slots of the bracket.

• 

Anchor the inverter to the bracket by tightening the locking screw to the      

       locking  tabs  

12

 located on the bracket bottom

.

295mm / 11.61”

220mm / 8.66”

53mm / 2.09”

100mm / 3.93”

80mm /

 3.15”

80mm / 

3.15”

726.5mm / 28.60”

685mm / 26.96”

110mm / 4.33”

303.25mm / 1

1.94”

17mm / 0.67”

50mm /

 

1.97”

170mm /

 

6.69”

A

A

A

A

B

B

B

B

B

B

01

Display

03

  Keypad

02

LED Panel

04

Inverter cover

08

Heat sink

09

 

Mounting 

bracket

10

Inverter

11

Main board

12

  Locking tabs

295mm / 11.61”

220mm / 8.66”

53mm / 2.09”

100mm / 3.93”

80mm /

 3.15”

80mm / 

3.15”

726.5mm / 28.60”

685mm / 26.96”

110mm / 4.33”

303.25mm / 1

1.94”

17mm / 0.67”

50mm /

 

1.97”

170mm /

 

6.69”

A

A

A

A

B

B

B

B

B

B

06

Wiring box cover

07

  DC disconnect switch

The inverter cover is equipped with fixed hinges and is not intended 

to be removed from the chassis. 

• 

Wiring box cover 

06

 must be removed before opening the inverter cover 

04

.  

• 

Loosen the four captive screws to remove the wiring box cover 

06

.

• 

Loosen the four captive screws on the inverter front cover 

04

.  

• 

Using light pressure, pull out and up on the cover so it rotates in an upward 

arc to its rest position.  

•  Remove the protective film located on the inverter front cover display 

01

.

• 

When connections are complete, close covers and tighten the captive 

screws with at least 2.0Nm (17.7in-lbs) torque to maintain waterproof 

sealing.

1

2

3

4

7.

W

iring details

The inverter uses pressure type terminal blocks for connection of all conductors.  

•  Acceptable wire size range is from 12 AWG to 6 AWG; refer to local codes for appropriate 

wire size; use only copper wire rated at least 90°C.

• 

To plug the input cables into the inverter it is necessary to replace the knockout plugs 

18

 

and 

19

 with an EMT FITTING 3/4” (thread 14 NPSM). 

All connection operations must be carried out with the DC disconnect switch 

07 turned to the OFF position and locked out AND the external AC disconnect 

switch downstream of the inverter (grid side) open and locked out!

RS485 CARD

J24

RS485(B)

17

1

18

J15

1

J16

2

J6

1

RS485

 

T/R

 

T/R

RTN

LNK

J14

BT1

CR2032

WIND REM

WT

WT

R

R

RS485(A)

J13

ALARM

N.C.

N.O.

C

TERM. 120

ON

OFF

S3

17

MEMORY CARD

J4

18

K4

J23

S1

1

S2

2

N

1

L

2

MOV3

3

MOV4

J25

RED

GFI

GFI

BLACK

W4

W3

WHITE

GND_MODE

W2

GRID

MOV2

J10

3

 

+IN

4

J20

F1

J5

1

5

2

9

6

14

11

J9

DC IN

 

-IN

1

 

-IN

2

J19

J7

1

MOV1

 

+IN

J17

J18

J8

1

a07 a08

a09

a10

a11

a12

a13

a14

a15

a02

a03

a04

a02

Ground cable connector

a10

Termination switch S3

a03

Negative grounding input

a11

RS-485 card housing

a04

Positive grounding input

a12

RJ45 Connectors

a07

Memory card housing

a13

Radiomodule slot

a08

Battery housing

a14

RS-485 terminal

a09

Rotary switches

a15

Multi-function relay

07 DC disconnect switch

18

DC knockout plug

13

Ground fault fuse

19

AC knockout plug

14

DC input terminal blocks

20 Signals knockout plug

16

AC output terminal blocks

25 Earth (ground) terminal

17

Signal wiring duct

26 Protective earth terminal

8.

System grounding

The inverter includes an earth (ground) terminal 

25

 for each wiring system (DC input and AC output circuit), and a protective earth (PE) 

terminal 

26

 for the external protective conductor, identified by the symbols on the terminals as shown below.

The earth (ground) connection terminal 

25

 is positioned 

inside the switchbox and connected as shown in the 

illustration at 

left

.

The PE connection terminal 

26

 is positioned inside the 

switchbox and connected as shown in the illustration at 

right

.

To prevent electrical hazards, all the connections must 

be  carried out with the disconnect switch downstream of 

the inverter (grid side) open and locked out.

4 5 6

1 2 3

FUSE

25

Main symbols used in the guide and on the products

UL 1741; CSA-C22.2 No. 107.1-01

General warning - Important safety 

information

Hazardous voltage

Hot surfaces

System earth conductor  

(main grounding protective earth, PE) 

ø

Phase

Grounding (earth)

  

Direct and alternating currents, respectively

This inverter has been tested and found to comply with the limits for a Class B digital device, 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:  a) Reorient or relocate the receiving antenna; 

b) Increase the separation between the equipment and receiver; c) Connect the equipment into an outlet on a circuit different from that to which the 

receiver is connected; d) Consult the dealer or an experienced radio/TV technician for help.

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