Selectronic SP PRO 2i Series Quick start guide

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 1 of 43 POWER PERFORMANCE PASSION
SP PRO ABB UNO Managed AC Coupling
Introduction
The SP PRO Managed AC Coupling provides a method of linking the ABB UNO Selectronic
Certified (SCERT) inverters to the SP PRO via the AC Load supply so that regardless of whether
the grid or a generator is connected, the SP PRO can manage and control the ABB UNO string
inverters.
Each SP PRO can manage a maximum of five ABB UNO inverters by commanding each inverter
to output the right amount of power that is needed simultaneously to supply the load, export
any excess and maintain the battery bank at any particular point in time. This is done via a
communications link which also serves to retrieve all the operational data for display and
logging by the SP PRO.
Note: This document needs to be read in conjunction with the SP PRO Instruction Manual and
any relevant ABB UNO Instruction Manuals.
Applicable ABB UNO
models Wireless Kit Suitable System Application
Order Off Grid On Grid
ABB UNO-DM-3.3/4.0/5.0/6.0-
TL-PLUS-B
Order code: 005316
(Optional)  
ABB PVI-3.0/3.6/4.2-TL-OUTD
(See Appendix II) ✘  
ABB PVI-5000/6000-TL-OUTD
(See Appendix II) ✘  
See Appendix II for ABB PVI Managed AC Coupling installation instructions, page
24 .
This document applies for SP PRO Series 2i. SP PRO Series I is not
supported.
No SP PRO installed? Important information
There is no special setup required if ABB UNO is not connected to an SP PRO.

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 2 of 43
Important information
 ABB UNO can only be configured while minimum 200Vdc is applied to the solar inputs.
 The ABB UNO-DM-3.3/4.0/5.0/6.0-TL-PLUS-B inverters can be installed with any existing
ABB Selectronic Certified inverter.
 For Wireless RS485 communication, please order Wireless RS485 link kit for the following
models (Order Code: 005316): ABB UNO-DM-3.3/4.0/5.0/6.0-TL-PLUS-B (see Appendix I
page 17)
 To extend the range of the wireless devices, please order the Patch Antenna (Order code
004810)

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 3 of 43 POWER PERFORMANCE PASSION
Installation check list
The follow table summarises the steps taken to set up an ABB UNO-DM in a Managed AC
Coupled system. Once the system has been installed, use the following table to check off that
each step has been completed.
Refer to the pages following the tables for detailed information on each of the installation steps.
Installation step Pages
1 Install SP PROs as per manual
2 Install and configure batteries
3 ABB UNO must be Selectronic Certified 4 & 6
4 SP PRO firmware requirement – 10.01 or higher 6
5 ABB UNO AC Wiring 7
6 Communications Link (RS485) 9
7 Communications connection for ABB UNO 10
8 Communications link for multiple installed ABB UNOs 11
9 Configure SP PRO
Note: The SP PRO must be configured via SP LINK “Site Configuration
Wizard” before configuring ABB UNO
15
10 Configure the ABB UNO for the first time 12
11 Test system function 16

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 4 of 43
The Overview
The diagram below shows a managed AC coupled system with five ABB UNOs.
System Requirements
To successfully install an SP PRO ABB managed system, there are particular requirements that
need to be met.
 SP LINK Site Configuration Wizard must be used to verify:
1. Combined maximum Fronius AC output
2. Battery bank size
 SP PRO must have firmware version 10.01 or higher.
 All ABB UNOs must be Selectronic Certified.
 Maximum of five ABB UNOs per SP PRO.
 SP PRO Series 2i

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 5 of 43 POWER PERFORMANCE PASSION
MINIMUM battery capacity for Solar Hybrid & Off Grid Systems
Each application will have a minimum battery capacity and a maximum allowable PV, please
refer to the battery manufacturer’s data sheet as well as the guidance given in the SP LINK Site
Configuration Wizard.
Note:
a. For a Solar Hybrid (grid connected) system, the minimum battery capacity that must be
connected to the SP PRO varies depending on SP PRO model. When the system is
islanded (e.g. during a grid outage) the SP PRO will limit the output of the AC coupled
solar based on the actual installed battery size.
b.
For an Off-Grid system, the minimum battery capacity that must be connected to the
SP PRO varies depending on SP PRO model, an overriding minimum battery capacity and
the combined maximum ABB UNO AC Output.

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 6 of 43
SP PRO Firmware Requirements
1. SP PRO Software Version 10.01 or higher is required.
To check software revision run SP LINK, connect to
the SP PRO and go to Data View – Technical Data –
“SP PRO Revision” and “Software Version”
2. The SP PRO must be Series 2i
 Older revisions of firmware must be updated to
firmware revision 10.01 or higher.
 Do not change any configuration settings until
firmware is updated.
Data View – Technical Data screen
Firmware Compatibility
SP PRO Firmware ABB Firmware Version
10.01 1712C
Table 3: ABB UNO compatible firmware with the SP PRO
ABB UNO Must be Selectronic Certified
The ABB UNO must be Selectronic Certified. Other ABB
UNOs will not operate correctly with the SP PRO in a
managed AC coupled configuration.

SP PRO ABB UNO Managed AC Coupling
Installation Notes
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Installation
The SP PRO and ABB UNOs must be installed as per their respective installation instructions.
Particular instructions directly related to Managed AC Coupling are listed below.
It is good practice to number each ABB UNO from 1 up to 5 so that each inverter can be easily
referenced within SP LINK.
In a multiphase system, label each ABB UNO on L1, from L1-1 to L1-5. Do likewise for each of
the ABB UNOs connected to L2, from L2-1 to L2-5 and so on.
ABB UNO AC wiring
The ABB UNO AC output wiring must be connected to the AC Load terminals of the SP PRO in
accordance with local wiring rules for correct operation.
ABB AC Wiring guide for Grid connected installation
ABB
Communications
Interface Board
Link
ABB

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 8 of 43
ABB UNO AC Wiring guide for Off Grid installation
Note: The system will not function correctly if the ABB UNOs are installed on the AC Source
side of the SP PRO.
ABB
ABB
Communications
Interface Board
Link

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 9 of 43 POWER PERFORMANCE PASSION
Communications Link (RS485)
The communication link always starts at the SP PRO and links to each of the ABB UNOs in a
daisy chain arrangement.
SP PRO Connections (inside unit) – RS485 Port 2 RJ45 connector to RJ45 Adapter. RJ45
Adapter to ABB UNO RS485 connector.
Sync1
Sync2
RS485
Port1
CAN
SPPROAdvanced
CommunicationsCard
Expansion
Card
RS485
Port2
DRM
SPPRO
ABBUNO
ABBUNOCOM

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 10 of 43
RS485 Connection to First ABB UNO
Using the supplied CAT5 network cable, connect one end to the Advanced Communications
Card “RS485-2” connection on the SP PRO. At ABB UNO 01 (Address# 02), connect the CAT5
cable to the RS485 adapter cable, and terminate the adapter into the ABB communications
board.
Note: For wireless RS485 communication (Order code: 005316) please refer to Appendix I
page 17.
Please Note: To terminate the RS485 adapter cable into ABB communications board, push
down the black tabs and insert the bootlace pinned wires into the board as follows.
ABB UNO Connections (inside unit) – RS485 Adapter Wires terminated into the ABB
communications board
Wire Colour ABB Connector Label
Red - T/R
Black + T/R
White RTN
Set the 120Ω termination to “ON” if only a single unit is connected to the SP PRO. If more than
one unit is connected, follow the instructions on the next page.

SP PRO ABB UNO Managed AC Coupling
Installation Notes
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Connecting ABB UNO link between Inverters 02 (Address# 03) to 05 (Address# 06)
The following configuration outlines the connection for multiple ABB UNOs to the first ABB UNO
(ABB UNO 01). If only a single ABB UNO is installed, skip to the next section page 15
(CONFIGURATION – ADDITIONAL SETTINGS)
The ABB UNO RS485 is designed to interface with multiple ABB UNOs in a daisy chain
arrangement as shown below.
When looping an ABB UNO to another ABB UNO, the termination jumper must be set to “OFF”
(away from ON). For the last ABB UNO, the termination jumper must be set to “ON”.
T
o ABB 02
To SP PRO
T
erminator
“
OFF
”
T
erminator
“
ON
”
Last ABB
Settin
g
Terminator “OFF
”
Settin
g
Terminator “ON
”

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 12 of 43
Configuration – Additional Settings
The Site Configuration wizard (in SP LINK 9.9 or higher) must be used to configure
the SP PRO settings. Using the wizard will ensure all SP PRO settings are compatible
with the managed AC coupled system.
The SP PRO must be configured before any of the ABB UNOs are energised.
The ABB UNOs RS485 must be set sequentially from Address# 02. (See “ABB UNO
Configuration” section).
Make sure in the SP LINK tab Configuration Settings > System, the follow settings are set.
 Set String Inverter to ABB Solar.
 Number of Devices is set to the number of ABB UNOs installed in the system.
SP LINK - Configuration Settings – System tab
In the example used above, two ABB UNOs are connected to the SP PRO.

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 13 of 43 POWER PERFORMANCE PASSION
ABB UNO Configuration
The settings listed below are required to be configured in each ABB UNO in order for the
system to operate correctly.
Each ABB UNO must be set to an RS485 address from 2 to 6 as appropriate.
1. Isolate the AC and connect the DC supply to the ABB UNO(s) and ensure that the DC
supply (Minimum 200 VDC) is present at the ABB UNO.
2. When the ABB UNO is powered for the first time, select the “Nation” of installation. For
Australia and New Zealand select “AS 4777” and press the ENTER key once and to save
the setting, hold the ENTER key for 5 seconds, the ABB UNO will reset.
3. Step through the initial stages of commissioning the inverters date and time, current
input mode, Grid select, country select…etc, until the following is displayed on the
screen.
Note: When an ABB UNO is powered without the AC, “Missing Grid “will be displayed on
screen.
4. Once the display is active on the ABB UNO, enter the main menu. To enter main menu,
press the ESC button to once, then using the DOWN key, scroll to “System” and press
ENTER. The ESC is also used to escape back to the previous menu or to edit previous
digits.
5. Scroll to Settings and press ENTER.
6. To access Settings, a passcode is required. By default, 0000 is the passcode or by
pressing the ENTER key four times to access the setting option. Use ENTER key to
confirm an action or to access submenus

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 14 of 43
7. Scroll to Set RS485 Com and press ENTER.
8. Scroll to Set Port and press ENTER.
9. Scroll to Address RS485 and press ENTER.
a. If only one ABB UNO is installed then the address must be set to 2/63.
b. If more than one ABB UNO is installed then the address must be allocated
sequentially starting from 2/63 (i.e. first ABB UNO = 2/63, second ABB UNO =
3/63, third ABB UNO = 4/63 etc).
c. Once the “Inverter Number” is selected, press the ENTER button to configure and
return to the “Set Port” menu.
Note: Do Not skip any address numbers in the sequence
10. Scroll to Protocol and press ENTER.

SP PRO ABB UNO Managed AC Coupling
Installation Notes
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a. Scroll DOWN and select Aurora (slave) and press the ENTER button to
configure and return to the “Set Port” menu.
11. Press the ESC button five times to return to the main display.
12. If there are multiple ABB UNOs installed, repeat for all others.
13. When all is configured, the ABB UNO display screen will cycle through the amount of
energy currently fed automatically.
Continue to section “System Commissioning – Additional Tests” page 16

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 16 of 43
System Commissioning – Additional Tests
In addition to the normal system testing that would be performed, the following additional tests
must be performed as detailed below.
Note: Make sure that only DC is connected at this stage.
Communications Link Verification
The correct operation of the ABB Managed AC Coupling relies on the
Communications Link. It is vital that the communications link (RS485)
connection has been setup correctly before operating the AC coupled
system.
1. Check that all the RS485 connections have been connected
correctly.
2. Isolate the AC and connect the DC supply to the ABB UNO. Make
sure that the DC supply is pressent at the ABB UNO and its display
is on.
3. Using SP LINK, connect to the SP PRO. In the Data View > Now
tab there should be a model number displayed for each of the
installed inverters.
The communication link may be further tested using the AC Solar Link Test found in SP LINK
under the Service Settings tab.
1. In the Service Settings tab click the “Reset Counters” button.
2. Wait 2 minutes and check that the error count remains at zero for
all the connected ABB UNOs. (An error count of 5 or less per
minute is acceptable, but in this case, it is good practice to check
the wiring and that the termination resistors are set correctly in
the SP PRO and ABB UNO.
Once the Communications link has been verified for each ABB UNO, the
AC feeds to each ABB UNO can be switched on and full system testing
and verification can be performed.
Testing the Failsafe on the RS485 Link
Once the system is operational, unplug the RS485 communications link from the SP PRO to the
ABB UNOs. Wait 1 minute and check that the output of each of the ABB UNOs has dropped to
approximately 0.1kW.

SP PRO ABB UNO Managed AC Coupling
Installation Notes
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Appendix I: Wireless RS485 for ABB UNO-DM Link
Introduction
This instruction will show how to install the Wireless RS485 link Kit (Order code 005316).
This details the additional steps needed to install a Wireless RS485 link into a SP PRO ABB UNO-
DM Managed AC Coupled system.
Important information
1. This document needs to be read in conjunction with:
- SP PRO AU Instruction Manual
- Relevant ABB UNO-DM Installation Manual
2. SD1100 RS485 Wireless adaptors are powered from the supplied plug packs. The plug
packs must be connected to the same AC power circuit as the connected ABB UNOs. This
is normally the AC load side of the SP PRO.
3. To extend the range of the wireless devices, please order the Patch Antenna (Order code
004810).
Additional information
Selectronic web site – http://www.selectronic.com.au or contact the Selectronic team.
Legend to diagrams in this document
SP PRO 2i Selectronic Certified
ABB UNO-DM Grid
inverter
SD1100 RS485
Wireless adaptor
with dipole
antenna
SD1100 RS485
Wireless adaptor
with patch
a
n
te
nn
a

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 18 of 43
Overview
The diagrams below illustrate the options for single phase managed AC coupled system with
ABB UNO-DM inverters.
Figure 1: Single phase system with one wireless ABB UNO-DM
Figure 2: Single phase system with multiple wireless ABB UNO-DM

SP PRO ABB UNO Managed AC Coupling
Installation Notes
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Installing a separate pair of wireless RS485 devices on each phase
The diagram below shows a three-phase managed AC coupled system with three ABB UNOs per
phase. A separate pair of Wireless RS485 link Kit (Order code 005316) must be used for each
phase.
Note: When using multiple Wireless RS485 device pairs use Patch Antennas on each of the
devices at the local end of the system (SP PRO end). This will reduce the interference between
devices. Keep patch antennas separated by a minimum of 300mm.
Figure 3: Overview of three phase system using Wireless RS485
Min
300mm
Min
300mm

SP PRO ABB UNO Managed AC Coupling
Installation Notes
IN0053 Revision 04 (005312) – 20 of 43
Wireless link restrictions
The wireless link uses the same frequency band as Wi-Fi and Bluetooth (2.4GHz). Any
obstructions between the two devices or interference from other devices using the same
frequency band (other blue tooth or Wi-Fi devices) will have a significant impact on their range.
To achieve the maximum range of 200m there must be line of sight between the two devices
and no interference. As a rule of thumb, each obstruction that is equivalent to a stud wall will
reduce the distance by about 20%. Mud brick walls, double brick or concrete walls will have a
much larger impact on the range.
Any obstruction from the landscape such as levy banks, hills or undulation land will totally block
the signal and the wireless link will not work.
If more than one wireless link is required within the same installation (such as a three-phase
system or multiple remote sites) then the interference between the devices will further reduce
the distance. In this case it is recommended that a patch antenna be used on all local Wireless
devices.
Extending the Wireless Range
If the required distance is longer than the specified 200m clear line of site, or there are multiple
devices being used then the range of the devices can be extended by replacing the dipole
antenna with a “patch” antenna. The table 1 below gives an indication of the expected range
when using a combination of dipole and patch antennas:
Table 1: Maximum “Line of site” distance between Wireless RS485 device pairs.
Local Wireless
device antenna
Remote wireless
device antenna
Max distance, one
pair of devices
(line of sight)
Max. distance,
multiple pair of
devices (line of sight)
Dipole (supplied) Dipole (supplied) 200m Not recommended
Patch – Optional
(stock code 004810)
Dipole (supplied) 300m 150m
Patch – Optional
(stock code 004810)
Patch – Optional
(stock code 004810)
500m 250m
Optional Patch Antenna to extend the range of the wireless devices
(Selectronic Order Code 004810)
Note: Patch Antenna is directional and must be mounted in a fixed position
that is directly facing the antenna of the other wireless device.