FuturaSun 3K User manual

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INSTALLATION MANUAL
HYBRID INVERTER
Optor Single
3K/3.6K/5K/6K
V 2023.06-MM

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CONTENTS
INFORMATION REGARDING THIS MANUAL ............................................................................................................................ 4
HOW TO USE THIS MANUAL .................................................................................................................................................... 4
1. SAFETY WARNINGS .............................................................................................................................................................. 4
2. DESCRIPTION OF THE PRODUCT .......................................................................................................................................... 4
2.1 PRODUCT OVERVIEW .................................................................................................................................................... 5
2.2 PRODUCT DIMENSIONS ................................................................................................................................................. 6
2.3 PRODUCT FEATURES ...................................................................................................................................................... 7
2.4 PRODUCT FEATURES ...................................................................................................................................................... 7
3. INSTALLATION ...................................................................................................................................................................... 8
3.1 LIST OF COMPONENTS................................................................................................................................................... 8
3.2 INSTALLATION INSTRUCTIONS ...................................................................................................................................... 9
3.2.1 INSTALLATION PRECAUTIONS ................................................................................................................................ 9
3.2.2 SELECTION OF THE INSTALLATION WALL .............................................................................................................. 9
3.2.3 INSTALLING THE INVERTER .................................................................................................................................. 10
3.3 CONNECTING THE BATTERIES ..................................................................................................................................... 11
3.3.1 SPECIFICATIONS OF THE FUNCTION TERMINALS ................................................................................................ 13
3.3.2 CONNECTION OF THE TEMPERATURE SENSOR FOR LEAD/ACID BATTERIES ...................................................... 14
3.4 CONNECTION OF THE GRID AND THE BACKUP LOAD ................................................................................................. 15
3.5 PHOTOVOLTAIC FIELD CONNECTION .......................................................................................................................... 17
3.5.1 PHOTOVOLTAIC MODULE SELECTION AND PHOTOVOLTAIC GENERATOR CONFIGURATION ........................... 18
3.6 CT CONNECTION .......................................................................................................................................................... 19
3.6.1 CONNECTION WITH EXTERNAL METER CHNT DDSU 666 .................................................................................... 20
3.6.2 CONNECTION WITH EXTERNAL METER EASTRON SDM230 ................................................................................ 21
3.7 EARTH CONNECTION ................................................................................................................................................... 21
3.8 WI-FI PLUG CONNECTION ............................................................................................................................................ 22
3.9 DIAGRAM OF TYPICAL CONNECTION .......................................................................................................................... 22
3.10 DIAGRAM OF SINGLE-PHASE CONNECTION WITH PARALLEL INVERTER ................................................................. 23
3.11 DIAGRAM OF THREE-PHASE CONNECTION WITH PARALLEL INVERTER .................................................................. 25
4 OPERATION ......................................................................................................................................................................... 26
4.1 SWITCHING ON USING THE ON/OFF BUTTON ............................................................................................................ 26
4.2 DISPLAY AND SIGNALLING LEDS.................................................................................................................................. 26
5 LCD DISPLAY ICONS ............................................................................................................................................................. 27
5.1 MAIN SCREEN .............................................................................................................................................................. 27
5.1.1 MENU STRUCTURE ............................................................................................................................................... 28
5.2 SOLAR / INVERTER / LOAD / GRID / BATTERY INFORMATION .................................................................................. 29
5.3 ENERGY DATA PAGES AND CURVES ............................................................................................................................ 30

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5.4 MAIN SETUP MENU PAGE ........................................................................................................................................... 31
5.5 BASIC SETTINGS ........................................................................................................................................................... 31
5.6 BATTERY SETTING ........................................................................................................................................................ 32
5.7 SYSTEM WORK MODE ................................................................................................................................................. 34
5.8 GRID SETTINGS ............................................................................................................................................................ 36
5.9 CEI 0-21 SELF-CHECK .................................................................................................................................................... 38
5.10 GEN PORT USE ........................................................................................................................................................... 40
5.11 ADVANCED FUNCTION .............................................................................................................................................. 41
5.12 DEVICE INFO .............................................................................................................................................................. 42
6 POSSIBLE OPERATING DIAGRAMS ...................................................................................................................................... 42
7 ERROR MESSAGES ............................................................................................................................................................... 45
7.1 LIST OF ERROR MESSAGES .......................................................................................................................................... 46
8. CONFIGURATION OF THE WI-FI PLUG AND MONITORING APP ........................................................................................ 48
9. TECHNICAL DATA ............................................................................................................................................................... 53
10. APPENDIX I ....................................................................................................................................................................... 54
11. APPENDIX II ...................................................................................................................................................................... 56

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INFORMATION REGARDING THIS MANUAL
The manual mainly provides product information, and installation, operation and maintenance guidelines. It does not,
however, include information regarding the photovoltaic sector.
HOW TO USE THIS MANUAL
Read the manual and other related documents carefully before any work on the inverter. All documentation must be stored
carefully and always be available in case of need. Contents may be periodically updated or revised as a result of product
development. The information contained in this manual is subject to change without notice. For a copy of the latest version
of this manual please contact [e-mail]
1. SAFETY WARNINGS
This section contains important safety and operation instructions.
Before using the inverter, read the instructions and warnings of the batteries to be installed, and the corresponding sections
in the instruction manual.
Do not open/disassemble/tamper with the inverter. If maintenance or repair is required, contact a licensed professional
installer.
Incorrect installation may result in electric shock and/or fire.
To avoid the risk of electric shock, disconnect all cables before attempting any maintenance or cleaning. Switching off the
inverter alone cannot eliminate the risk of electric shock.
ATTENTION: this product may only be installed by qualified personnel.
Never charge a battery that is below its operating temperature limit.
For optimal operation, use DC and AC power cables with appropriate cross-sections depending on the electrical currents
and powers.
Take great care when working with metal tools in the vicinity of the batteries. Dropping an instrument can cause a spark
or short circuit in batteries or other electrical components, or even explosion.
Strictly follow the procedures in this manual when disconnecting the terminals of the AC or DC connections. Refer to the
“Installation” section of this manual for the details.
Earthing instructions: this inverter must be strictly and correctly connected to a permanent earthing system. The local
requirements and regulations for installing the inverter must be observed.
Short circuits of the AC output and the DC input must always be avoided. Do not connect the inverter to the electric power
supply if the DC input is short-circuited.
2. DESCRIPTION OF THE PRODUCT
This inverter is a multifunctional product: it combines the functions of an inverter, a solar charge controller and a battery
charger to supply low-power electricity without interruption. Thanks to easily accessible buttons, its detailed LCD screen
allows the user to operate and configure the machine as battery charger, with solar/AC charge and flexible input voltages
according to different applications.

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2.1 PRODUCT OVERVIEW
1 : INVERTER INDICATORS 7: DRMs PORT 13 : ON/OFF BUTTON
2 : LCD DISPLAY 8: PARALLEL PORT 14: DC DISCONNECTOR
3 : FUNCTION BUTTONS 9: FUNCTION TERMINALS 15 : PV INPUT - 2 MPPTs
4 : BATTERY INPUT CONNECTORS 10 : GENERATOR CONNECTION 16 : BATTERY CABLE ENTRY
5 : PORT 485/METER 11 : LOAD CONNECTION 17 : TEMP PROBE INPUT
6 : PORT BMS 485/CAN 12 : GRID CONNECTION 18 : WIF INTERFACE

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2.2 PRODUCT DIMENSIONS

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2.3 PRODUCT FEATURES
- Self-consumption and feed into the grid
- Automatic restart
- Programmable power supply priority for the batteries or the grid
- Different operating modes: OnGrid, OffGrid and EPS
- Battery charging current and voltage selectable from display depending on application
- Display-selectable battery charging priority (grid, solar, generator)
- Compatible with grid or generator power supply
- Overload, overtemperature and short-circuit protection
- Smart battery charger design for optimised battery performance
- Smart battery charger design for optimised battery performance
- Possibility of not feeding energy into the grid
- WI-FI monitoring and equipped with 2 MPPTs.
- Three-stage adjustable smart MPPT solar charging for optimised battery performance
- Programmable hourly charging and discharging of the batteries
- Possibility of feeding a load with excess energy (SMART LOAD)
2.4 PRODUCT FEATURES
The following picture shows the typical inverter operating diagram
It includes the following devices:
- Generator or public grid
- Photovoltaic field
For other possible solution diagrams in accordance with your needs, please consult your trusted technician.
This inverter can power any domestic appliance, including appliances with motor such as refrigerators or air conditioners,
as long as the maximum power output of the inverter is not exceeded.
WiFi
GPRS
Cloud Service smartphone
PV
Backup Load
Domestic loads
connected to the grid
Grid
TA
Batteries
Smart Load
Grid inverter
Generator
ATS
AC Line
DC Line

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3. INSTALLATION
3.1 LIST OF COMPONENTS
Check the components before the installation. Make sure that no components are damaged. The following components
must be in the inverter package:
1 x Hybrid Inverter 1 x Fixing bracket
4 x M6*60 stainless steel
bolts
2 x Stainless steel mounting
screws M4*12
1 x Communication cable for
parallel operation
1 x L-shaped hexagon key
1 x User Manual
Manual
1 x WI-FI adapter
(ON REQUEST)
1 x Temperature sensor
1 x Current Transformer

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3.2 INSTALLATION INSTRUCTIONS
3.2.1 INSTALLATION PRECAUTIONS
The inverter is designed for outdoor use (IP65). The chosen installation site must comply with the following conditions:
· Avoid exposing the inverter to direct sunlight
· Do not install the inverter in areas where flammable materials are present
· Do not install the inverter in potentially explosive environments
· Avoid exposing the inverter to direct jets of cold air
· Do not install the inverter near a TV aerial or near aerial cables
· Do not install the inverter at an altitude above 2000 metres above sea level
· Do not install the inverter in rooms with humidity > 95% or directly exposed to atmospheric precipitation (rain and
snow)
Before connecting the cables, remove the metal cover by removing the screws as shown below:
3.2.2 SELECTION OF THE INSTALLATION WALL
The vertical installation wall must be suitable to support the weight of the inverter and any associated batteries, and must
be made of non-flammable material.
The installation height must be so that the LCD display of the inverter is at eye level and the user can read it correctly.
The temperature of the installation environment must be between -25 °C and 60 °C
For proper air circulation, necessary for heat dissipation and for maintenance, leave a free area as shown in the following
figure:

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≥500mm
≥500mm
3.2.3 INSTALLING THE INVERTER
The inverter is heavy: be very careful when unpacking and handling it.
To drill the fixing holes in the installation wall, choose the appropriate drill bit and drill 4 holes between 62 and 70 mm
deep
Use a hammer to insert the supplied expansion bolts into the holes.
Secure the installation bracket by tightening the bolts.
Lift the inverter, hook it onto the mounting bracket and insert and tighten the two M4 safety screws, as shown in the
following two pictures