SUNSYNK SUN-8K-SG01LP1-EU Single Phase Hybrid Inverter Installation Guide

ECCO
HYBRID INVERTER
USER MANUAL

SAFETY

1.1. General Safety

• This device should only be used in accordance with the instructions within this manual and in compliance with local, regional, and national laws and regulations. Only allow this device to be installed, operated, maintained, and repaired by other people who have read and understood this manual. Ensure the manual is included with this device should it be passed to a third party.
• DO NOT allow minors, untrained personnel, or person(s) suffering from a physical or mental impairment that would affect their ability to follow this manual, install, maintain or repair this device.
• Any untrained personnel who might get near this device while it is in operation MUST be informed that it is dangerous and instructed carefully on how to avoid injury.

1.2. Symbols

WARNING| This symbol indicates information that if ignored, could result in personal injury or even death due to incorrect handling.
---|---
CAUTION| This symbol indicates information that if ignored, could result in personal injury or physical damage due to incorrect handling.
PLEASE NOTE| Indicates information that is considered important, but not hazard-related.

1.3. Safety Instructions

WARNING
HIGH LIFE RISK DUE TO FIRE OR ELECTROCUTION.
The Sensing Eco Hybrid Inverter can only be installed by a qualified licensed electrical contractor.
This is not a DIY product.

• This chapter contains important safety and operating instructions. Read and keep this manual for future reference.
• Before using the inverter, please read the instructions and warning signs of the battery and corresponding sections in the instruction manual.
• Do not disassemble the inverter. If you need maintenance or repair, take it to a professional service center.
• Improper reassembly may result in electric shock or fire.
• To reduce the risk of electric shock, disconnect all wires before attempting any maintenance or cleaning. Turning off the unit will not reduce this risk.
• Never charge a frozen battery.
• For optimum operation of this inverter, please follow the required specifications to select the appropriate cable size. It is very important to operate this inverter correctly.
• Be very cautious when working with metal tools on or around batteries. Dropping a tool may cause a spark or short circuit in batteries or other electrical parts, even causing an explosion.
• Please strictly follow the installation procedure when you want to disconnect AC or DC terminals.
• Please refer to this manual’s “Installation” section for details.
• Grounding instructions – this inverter should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulations to install this inverter.
• Never cause AC output and DC input to short-circuit. Do not connect to the mains when DC input short circuits.

1.4. Disposal Remarks
DO NOT dispose this product with domestic waste!
Electrical devices should be disposed of in accordance with regional directives on electronic and/ or electronic-waste disposal. In case of further questions, please consult your supplier. In some cases, the supplier can take care of proper disposal.

PRODUCT INTRODUCTION

The Sensing Eco Hybrid Inverter is a multifunctional inverter combines the functions of an inverter, solar charger and battery charger to offer uninterruptible power support with a portable size. Its comprehensive LCD display offers user-configurable and easily accessible button operations such as battery charging, AC/ solar charging, and acceptable input voltage based on different applications.
2.1. Product Overview

*Note: For some hardware versions, it doesn’t have this fan.
2.2. Product Size

2.3. Product Features
INTERACTIVE

• Easy and simple to understand display
• Supporting Wi-Fi or GSM monitoring
• Visual power flow screen
• Parallel / multi invert function grid-tied and off-grid

COMPATIBLE

• Compatible with main electrical grid voltages or power generators
• Compatible with wind turbines
• Self-consumption and feed-in to the grid
• Auto restart while AC is recovering
• Auto earth bond feature (Via a relay)

CONFIGURABLE

•  Fully programmable controller
• Programmable supply priority for battery or grid
• Programmable multiple operation modes: on-grid/off-grid & UPS
• Configurable battery charging – current/voltage based on applications by LCD setting
• Configurable AC / solar / generator charger priority by LCD setting

SECURE

• Overload/over-temperature/short-circuit protection
• Smart battery charger design for optimized battery protection
• Limiting function installed to prevent excess power overflow to grid

APPLICATIONS

• Marine (vessel power management)
• Power shedding (home/office/factory)
• UPS (fuel-saving systems)
• Remote locations with solar and wind generators
• Building sites
• Military locations
• Telecommunication

2.4. Basic System Architecture
The following illustration shows the basic application of this inverter.
It also includes following devices to have a Complete running system.

• Generator or Utility
• PV modules

Consult with your system integrator for other possible system architectures depending on your requirements.
This inverter can power all kinds of appliances in home or once environment, including motor type appliances such as refrigerator and air conditioner.

TECHNICAL SPECIFICATIONS

Model| SUN-3.6K- SG05LP1-EU| SUN-5K- SG05LP1-EU| SUN-6K- SG05LP1-EU| SUN-7.6K- SG05LP1-EU| SUN-8K- SG05LP1-EU
---|---|---|---|---|---
Battery Input Data
Battery Type| Lead-acid or Lithium-ion
Battery Voltage Range| 40~60V
Max. Charging Current| 90A| 120A| 135A| 190A| 190A
Max. Discharging Current| 90A| 120A| 135A| 190A| 190A
Charging Curve| 3 Stages/Equalization
External Temperature Sensor| Yes
Charging Strategy for Li-Ion

Battery

| Self-Adaptation to BMS
PV String Input Data
Max. DC Input Power| 4680W| 6500W| 7800W| 9880W| 10400W
PV Input Voltage| 370V (125V~500V)
MPPT Range| 150~425V
Start-up Voltage| 125V
Full Load DC Voltage Range| 300~425V| 200~425V
PV Input Current| 13A+13A| 26A+26A
Max. PV Isc| 17A+17A| 34A+34A
No. of MPPT / Strings Per

MPPT

| 2/1+1
AC Output Data
Rated AC Output and UPS Power| 3600W| 5000W| 6000W| 7600W| 8000W
Max. AC Power| 3690W| 5500W| 6600W| 8360W| 8800W
Peak Power (off-grid)| 2 times of rated power, 10 S
AC Output Rated Current| 16.4A| 22.7A| 27.3A| 34.5A| 36.4A
Max AC Current| 18A| 25A| 30A| 38A| 40A
Max Continuous AC Passthrough| 35A| 40A| 50A
Output Frequency and Voltage| 50/60Hz; L/N/PE 220/230Vac (single phase)
Grid Type| Single-Phase
Current Harmonic Distor-tion| THD<3%(Linear load<1.5%)
Efficiency
Max. Efficiency| 97.60%
MPPT Efficiency| 97.00%
Euro Efficiency| 99.90%
Protection
Integrated| PV Input Lightning Protection, Anti-islanding Protection, PV String Input Reverse Polarity Protection, Insulation Resistor Detection, Residual Current Monitoring Unit, Output Over Current Protection, Surge protection
Certifications and Standards

Grid Regulation| CEI 0-21, VDE-AR-N 4105, NRS 097, IEC 62116, IEC 61727, G99, G98, VDE 0126-1-1, RD 1699, C10-11
Safety EMC / Standard| IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2
General Data
Operating Temperature

Range

| -45~60°C, >45°C Derating
Cooling| Natural Cooling
Noise| <30dB
Communication with BMS| RS485; CAN
Weight| 20.5kg
Size| 330W x 580H x232D mm
Protection Degree| IP65
Installation Style| Wall-mounted
Warranty| 5 years

INSTALLATION

4.1. Parts List
Check the equipment before installation. Please make sure nothing is damaged in the package. You should have received the items in the following package:

4.2. Selecting the Mounting Area
This Sensing Ecco Hybrid Inverter is designed for outdoor use (IP65).
DO NOT install the inverter in the following areas:

• Areas with high salt content, such as the marine environment. It will deteriorate the metal parts and possibly lead to water/dampness penetrating the unit.
• Areas filled with mineral oil or containing splashed oil or steam such as found in kitchens. It will deteriorate plastic parts of the unit, causing those parts to fail or allow water/damp to penetrate the unit.
• Areas that generate substances that adversely affect the equipment, such as sulphuric gas, chlorine gas, acid, or alkali. These can cause the copper pipes and brazed joints to corrode and fail to conduct electricity reliably.
• Areas that can cause combustible gas to leak, which contains suspended carbon-fibre or flammable dust, or volatile inflammable such as paint thinner or gasoline.
• Areas where there may be gas leaks and where gas may settle around the unit as this is a fire risk.
• Areas where animals may urinate on the unit or ammonia may be generated.
• High altitude areas (over 2000 metres above sea level).
• Environments where precipitation or humidity are above 95%.
• Areas where the air circulation is too low.
• Areas exposed to direct sunlight.

Before connecting all wires, please take off the metal cover by removing screws as shown below:

Considering the following points before selecting where to install:

• Please select a vertical wall with load-bearing capacity for installation, suitable for installation on concrete or other non-flammable surfaces, installation is shown below.
• Install this inverter at eye level in order to allow the LCD display to be read at all times.
• The ambient temperature is recommended to be between -40~60ºC to ensure optimal operation.
• Be sure to keep other objects and surfaces as shown in the diagram to guarantee sufficient heat dissipate-tion and enough space to remove wires.
• Install the indoor unit on the wall where the floor height is higher than 1600mm.
• For proper heat dissipation, allow a clearance of approximately 500mm to the side, 500mm above and below the unit, and 1000mm to the front of the unit.

WARNING
For proper air circulation to dissipate heat, allow a clearance of approx. 50cm to the side and approx. 50cm above and below the unit. And 100cm to the front.

4.3. Mounting the Inverter
Choose the recommended drill head (as shown below pic) to drill 4 holes in the wall, 62-70mm deep.

1. Use a proper hammer to fit the expansion bolt into the holes.
2. Carry and hold the inverter, ensure the hanger aims at the expansion bolt, and fix the inverter on the wall.
3. Fasten the screw head of the expansion bolt to finish the mounting.

WARNING
Risk of injury (Heavy Object).
Remember that this inverter is heavy so users must be careful in handling the unit during installation especially when mounting or removing it from a wall.

4.4. Battery Connection
For safe operation and compliance, a separate DC over-current protector or disconnect device is required between the battery and the inverter. In some applications, switching devices may not be required but over-current protectors are still required. Refer to the typical amperage in the table below for the required fuse or circuit breaker size.

CAUTION
All wiring/connecting must be performed by qualified personnel. Before making the final DC connection or closing the DC Breaker/disconnection device, ensure the inverter unit is wired correctly. A reverse-polarity connection on the battery will damage the inverter.
Please follow below steps to implement battery connection:

1. Please choose a suitable battery cable with correct connector which can well fit into the battery terminals.
2. Use a suitable screwdriver to unscrew the bolts and fit the battery connectors in, then fasten the bolt by the screwdriver, make sure the bolts are lightened with torque of 5.2 N.M in clockwise direction.
3. Make sure polarity at both the battery and inverter is correctly connected.
4. In case of children touch or insects go into the inverter, please make sure the inverter connector is fasten to waterproof position by twist it clockwise.

For 3.6KW/5KW/6KW/7.6KW/8KW model, battery connector screw size: M6

CAUTION
Reverse Polarity.
Before making the final DC connection or closing DC breaker/disconnect, be sure positive(+) must be connect to positive(+) and negative(-) must be connected to negative(-). Reverse polarity connection on battery will damage the inverter.
4.4.1. Function Port Definition

4.4.2. Recommended DC Battery Protection

4.5. Connecting a Lithium Battery
When connecting a Lithium battery, follow the connection steps below and check ‘Setting up a Lithium Battery’ to connect with an inverter.

1. Connect the correct diameter of cable in accordance with the battery manufacture specifications along with recommended safety devices.
2. Connect a communication cable from the batteries to the inverter in compliance with the battery manufacturer guidelines. The cables have two ends, one to be specifically connected to the BMS and another to be connected to the inverter, do not connect them incorrectly.
3. Connect the power and communication cables to the inverter correctly.

PLEASE NOTE
When connecting more than one battery, ensure they are set in the configuration of ‘master and slave’.
PLEASE NOTE
Depending on the battery type, the inverter should be capable of controlling the batteries BMS. Therefore, you need to set the protocol of the BMS on both the battery and the inverter.
When using more than one battery, the first battery will be the master, and the other batteries will be the slaves. Please, check the battery manufacturer’s specifications for proper operation.
To verify if the battery is communicating, access the Li BMS menu as detailed in the section ‘Setting Up a Lithium Battery’ and check whether the values are realistic. It is important that the charge and discharge limits in that page match the numbers expected for the number of batteries physically connected.
4.6. Battery Temperature Sensor Connection
Without a remote temperature sensor, lead-acid batteries may undercharge or overcharge depending on the ambient temperature of the installation environment. This may result in a fire hazard.

4.7. Connecting the AC

Before connecting to the grid, please install a separate AC breaker between the inverter and the grid. Also, it is recommended that installs an AC breaker between the backup load and inverter. This will ensure the inverter can be securely disconnected during maintenance and fully protected from overcurrent. For the 3.6/5/6/7.6/8KW model, the recommended AC breaker for backup load is 32A/40A.
For the 3.6/5/6/7.6/8KW model, the recommended AC breaker for the grid is 40A.
There are three terminal blocks with “Grid”, “Load”, and “GEN” markings. Please do not disconnect the input and output connectors.

input and output connec-tion for non-essential load and supply.
LOAD| Connection of essential loads such as lighting, security systems, and Internet
Model| Wire Size| Cable (mm2)| Torque value (max.)
---|---|---|---
3.6kW| 12AWG| 4| 1.2N.m
5kW| 10AWG| 6| 1.2N.m
6kW| 10AWG| 6| 1.2N.m
7.6kW| 8AWG| 8| 1.2N.m
8kW| 8AWG| 8| 1.2N.m

CAUTION
All wiring and cable sizes must comply with your particular country’s wiring regulations and Codes of Practices. Ensure that suitable disconnection devices and RCDs are fitted.
Please follow the steps below to implement GRID, LOAD, and GEN port connections:

1. Before making GRID, LOAD, and GEN port connections, make sure to turn off the AC breaker or disconnector first.
2. Remove a 10mm sleeve from each wire, unscrew the bolts, insert the wires according to the polarities indicated on the terminal block and tighten the terminal screws. Ensure the connection is complete.
3. Then, insert AC output wires according to the polarities indicated on the terminal block and tighten the terminal. Make sure to connect corresponding N wires and PE wires to related terminals as well.
4. Ensure the wires are securely connected.
5. Check that the AC power source is isolated before attempting to connect it to the inverter. Insert AC output wires according to the polarities indicated on the terminal block and tighten the terminal screws. Be sure to connect the corresponding N wires and PE wires to the correct terminals and ensure the wires are securely connected.

4.7.1. Recommended AC Surge Protector

4.8. PV Connection
Before connecting to PV modules, please install a separate DC circuit breaker between the inverter and PV modules. It is very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce the risk of injury, please use the proper recommended cable size as below.

CAUTION
Do not connect any PV modules with possible current leakage to the inverter to avoid any malfunction. For example, grounded PV modules will cause current leakage to the inverter. When using PV modules, please ensure the PV+ & PVof solar panel is not  connected to the system ground bar.
It is requested to use a PV junction box with surge protection. Otherwise, it will cause damage to the inverter when lightning occurs on PV modules.
4.8.1. PV module selection
When selecting proper PV modules, please be sure to consider below parameters:

1. Open circuit Voltage (Voc) does not exceed the max. PV array open circuit voltage of the inverter.
2. Open circuit Voltage (Voc) should be higher than min. start voltage.
3. The PV modules connected to this inverter shall be Class A rating certified according to lEC 61730.

Inverter Model| SUN-3.6K- SG05LP1-EU| SUN-5K- SG05LP1-EU| SUN-6K- SG05LP1-EU| SUN-7.6K- SG05LP1-EU| SUN-8K- SG05LP1-EU
---|---|---|---|---|---
PV Input Voltage| 370V (125V~500V)
PV Array MPPT Voltage Range| 150V~425V
No. of MPP Trackers| 2
No. of Strings per MPP Tracker| 1+1| 1+1| 1+1| 2+2| 2+2

4.8.2. PV module wiring

1. Switch the Grid Supply Main Switch (AC) OFF.
2. Switch the DC isolator OFF.
3. Assemble PV input connector to the inverter.

WARNING
Please do not connect the PV array’s positive and negative poles to the ground. This can seriously damage the inverter.
Before connecting the inverter, please make sure the PV array open-circuit voltage is within the maximum limit of the inverter.
The correct steps in assembling the DC connector are explained below:

1. Strip 7mm of the plastic coating off the DC wire and disassemble the connector cap nut.
2. Crimp metal terminals with crimping pliers.
3. Insert the contact pin into the connector housing until it locks into place. Then screw the cap nut onto the connector housing. Torque to 2.5-3 N.m.
4. Finally, insert the DC connector into the positive and negative input of the inverter.

4.8.3. PV Protection

4.9. Installing the CT Coil
The CT coil is one of the most important parts of the Sensing Parity inverter. This device reduces the power of the inverter to prevent feeding power to the grid. This feature is also known as “Zero Export”.

1. Fit the coil (sensor) around the live cable on the main fuse feeding the building and run the cable back to the inverter. If using an external meter, you can extend the cable for more than 10 metres. Plese consult the meter manual on distance.
2. Connect the other end of the CT coil to the inverter terminals marked as CT coil.

4.11. Meter Connection
4.11.1. System Connection for the CHNT Meter

4.10. Earth Connection (MANDATORY)
An Earth Cable shall be connected to the earth plate on the grid size in order to prevent electric shock if the original protective conductor fails.

All neutrals can be linked together to maintain the neutral bond. When a Neural Earth bond is required for an ‘Off-grid’ operation, then it has to be removed on ‘Grid-Tied’ operation.
If an Earth Bond is required between neutral and earth and your system is a hybrid system, then you can have a permanent earth wire since this can cause faults with an RCD before the inverter.
Since the inverter is a true hybrid, then the bond must only be made when the inverter is operating in Islanding Mode. To accommodate this, Sunsynk provides an AC output, which is connected to the A/T/S connections whenever the inverter is running on Island Mode. Therefore, you can simply connect the coil of an AC relay to the ATS 240 connections. Next, you need to select Signal Island Mode on the battery charge menu (click on the gear icon -> battery icon), as shown in the figure below.

PLEASE NOTE
The grid power may still be present, but the inverter is not draining power from it since the unit is working in ‘Island Mode’.
4.12. Wiring System for Inverter

4.13. Single-Phase Parallel Connection Diagram

4.14. Three-Phase Parallel Inverter

4.15. Typical Application Diagram of Diesel Generator

OPERATION

5.1. Switching ON/OFF
Once the inverter has been correctly installed and the batteries have been connected, press the ON/OFF button (located on the left side of the case) to activate the system. When the system is connected without a battery but connected with either PV or grid and the ON/OFF button is switched off, the LCD will still illuminate (display will show off). In this condition, when switching on the ON/OFF button and selecting ‘No Battery’, the system can still work.
5.2. Display

5.2.1. LED indicators

5.2.2. Function buttons

be saved)

5.3. LCD operation flow chart

5.4. Home page
Press the Esc button any page to access the home page:

1. Customer name
2. Access the settings menu page
3. Access solar page
4. Access load page
5. Access battery page
6. Access grid page
7. Access system flow page
8. Access fault code displays.

The icon (8) indicates that the system is in Normal operation. If it turns into “comm./F01~F64”, the inverter has communication errors or other errors, and the error message will display under this icon (F01-F64 errors, detail error info can be viewed in the System  Alarms menu).
What this page displays:

• Total daily power into the battery (kWh).
• Total daily power out of the battery (kWh).
• SOC (State of charge of the battery) (%).
• Total daily solar power produced in (kWh).
• Total hourly usage of the generator (Time).
• Total daily power sold to the grid (kWh).
• Total daily power bought from the grid (kWh).
• Real-time solar power in (kW).
• Real-time load power in (kW).
• Real-time battery charge power in (kW).
• Real-time grid power in (kW).
• Serial number.
• Time date.
• Access the status page.
• Access the fault code displays.

5.5. Status Page
To access the Status page, click on the BATTERY or AC LOAD dial on the Home page.

What this page displays:

• Total solar power produced.
• MPPT 1 power/voltage/current.
• MPPT 2 power/voltage/current.
• Grid power.
• Grid frequency.
• Grid voltage.
• Grid current.
• Inverter power.
• Inverter frequency.
• Inverter voltage.
• Inverter current.
• Load power.
• Load voltage.
• Battery power charge/discharge.
• Battery SOC.
• Battery voltage.
• Battery current.
• Battery temperature.

Solar Column: Shows total PV (Solar) power, voltage and current for each of the two MPPT.
Grid Column: Shows grid total power, frequency, voltage, and current. When selling power to the grid, the power is negative. When consuming from the grid, the power is positive. If the sign of the grid and HM (home) powers are not the same when the PV is disconnected and the inverter is only taking energy from the grid and using the CT connected to Limit-2, then please reverse the polarity of the CT coil.
Important: See Section ‘Connecting the CT coil’.
Inverter Column: Showing inverter total power, frequency, L1, L2, voltage, current, and power.
Load Column: Showing total load power, load voltage, and power on L1 and L2.
Battery Column: Shows total power from the battery, battery SOC, battery voltage, battery current (negative means charge, positive means discharge) battery temperature (shows zero if the battery temperature sensor is not connected). DC transformer temperature and AC heatsink temperature (When the temperature reaches 90°C, it will display in red, and the performance of the inverter will start deteriorating when it reaches 110°C. Subsequently, the inverter will shut down to allow it to cool and reduce its
temperature.
5.6. System Flow Page
Access by clicking on the bar chart on the Home Page.
To better understand the functioning of your system, take a look at the figure at right:

1. The PV modules charge the batteries.
2. When the batteries reach a specific level (programmable), the battery power is fed into the inverter.
3. The inverter can then supply power to the grid (export or no export), load, and auxiliary or smart load.
4. CT coil controls the export power.

What this page displays:

• The system flow.
• MPPTs power.
• Battery status.
• Power distribution to load or grid.

5.7. Setup Page
To access Settings, click on the gear icon on the right top of the navigation menu.

What this page displays:

• Serial number.
• Software version.
• Time, Date, and MCU.

What you can do from this page:

• Access the Basic Setup Page (press the BASIC icon).
• Access the Battery Setup Page (press the BATTERY icon).
• Access the Grid Setup Page (press the GRID icon).
• Access the real-time programmable timer/system mode (press the SYSTEM MODE icon).
• Access the advanced settings such as Paralleling and Wind Turbine (press the ADVANCE icon).
• Access the auxiliary load/smart load settings (press the AUX LOAD icon)
• Access the fault code register (press the FAULT CODES icon).
• Set up Li BMS (press the LI BMS icon).

5.8. Basic Setup
5.8.1. Set Time (Clock)
To set time, click on the BASIC icon and then on ‘Time’

What this page displays:

• Time.
• Date.
• AM/PM.

What you can do from this page :

• Adjust / set time.
• Adjust / set date.
• Adjust / set AM/PM.

How to set up :

• Touch the screen on the box you wish to change.
• Change the number (increase/decrease) using the UP and DOWN buttons.
• Press OK to set the changes.

5.8.2. Set Company Name / Beeper / Auto dim
To set company name click on the BASIC icon and then on ‘Display’.

What this page displays:

• Beeper status (ON/OFF)
• Installers names.

What you can do from this page:

• Set up your company name.
• Switch the beeper ON or OFF.
• Set the LCD backlight to auto dim.

How to change the name:
Change the letters in each box by moving the arrows up and down and then select OK. This will change the name on the home screen.

How to set the auto dim:
Set a number in the auto dim box to dim the LCD after a number of seconds.
How to turn the beep on or off:
Check or uncheck the beep box and the press OK to configure it as you prefer.
5.8.3. Factory Reset and Lock Code
To access the Settings, click on the gear icon on the right top of the menu.

What this page displays:

• Reset status.
• Whether the ‘lock code’ is used or not.

What you can do from this page:

• Reset the inverter to the factory settings.
• System diagnostics.
• Change or set the ‘lock code’.

Factory Reset: Reset all parameters of the inverter
Lock out all changes: Enable this menu to set parameters before the unit is locked and cannot be reset.
*Before performing a successful ‘Factory Reset’ and locking the systems, the user must enter a password to allow the setting to take place. The password for ‘Factory Reset’ is 9999 and for lockout is 7777.
System self-check: Allows the user to conduct a system diagnosis. After ticking this item, it needs input the password. The default password is 1234
Test mode (only for engineers): For engineers to conduct tests.

5.9. Battery Setup Page
To configure battery settings, click on the BATTERY icon and then on ‘Batt type’.

What this page displays:

• Battery capacity in (Ah): For non-BMS-batteries the range allowed is 0-2000Ah, while for lithium-ion, the inverter will use the capacity value of the BMS.
• Charge/Discharge Amps: The Max battery charge/discharge current (0-90A for 3.6kW model, 0-120A for 5kW model, 0-135A for 6kW model, 0-190A for 7.6/8KW model).
• AGM V: Use battery voltage for all settings (V).
• AGM %: Use battery SOC for all settings (%).
• No batt: Tick this box if no battery is connected to the system.
• BMS Err Stop: When it is active, if the battery BMS fails to communicate with inverter, the inverter will stop working and report fault.
• Active battery: This feature will help recover a battery that is 100% discharged by slowly changing from the solar array. Until the battery reaches a point where it can change normally.
• TEMPCO settings: The temperature coefficient is the error introduced by a change in temperature.

PLEASE NOTE
Recommended:
AGM and Flooded: Ah battery size x 20% = Charge/Discharge amps.
Lithium: Ah battery size x 50% = Charge/Discharge amps.
Gel: follow manufacturer’ s instructions.
5.10. Generator & Battery Page
To configure battery charging settings, click on the BATTERY icon and then on ‘Batt Charge’.

What this page displays:

• Start: Generator start voltage/SOC %. S.O.C at 30% system will AutoStart a connected generator to charge the battery bank.
• Amps: Charge rate of 40A from the attached generator in Amps.
• Grid power start voltage/SOC %: No use. Just for customization.
• Grid Amps: Current that the grid charges the battery.
• Gen Charge: Uses the GEN input of the system to charge the battery bank from an attached generator.
• Gen Signal: Normally open (NO) relay that closes when the Gen Start signal state is active.
• Gen Force: When the generator is connected, it is forced to start without meeting other conditions.
• Grid Charge: It indicates that the grid will charge the battery.
• Grid Signal: This indicates when the grid should no longer charge the battery.
• Signal ISLAND MODE: When “signal island mode” is checked and the inverter connects the grid, the ATS port voltage will be 0. When “signal island mode” is checked and the inverter is disconnected from the grid, the ATS port voltage will output 230Vac. This feature and outside NO type relay can realize N and PE disconnection or bond.
• Float V: The voltage at which a battery is maintained after being fully charged. Float V for an AGM battery is 55.20V.
• Absorption V: The level of charge that can be applied without overheating the battery. Absorption V is for an AGM battery is 57.60V.
• Equalization V: Equalizing charge/overcharge to remove sulfate crystals that build up on the plates over time on lead-acid batteries. Equalization V for an AGM battery is 58.80V.

PLEASE NOTE
Do not alter these settings too often on the same battery, as it may damage the battery.
Recommended battery settings:

Battery Type| Absorption Stage| Float Stage| Voltage (every 30 days 3hr)
---|---|---|---
AGM (or PCC)| 14.2V (57.6V)| 13.4V (53.6V)| 14.2V (57.6V)
Gel| 14.1V (56.4V)| 13.5V (54.0V)|
Wet| 14.7V (59.0V)| 13.7V (55.0V)| 14.7V (59.0V)
Lithium| Follow its BMS voltage parameters

A generator can either be connected to the Grid side or to the Gen connection. When connected to the Grid Input, the inverter will consider the power coming from the generator as ‘Grid Supply’. Users should ensure this power goes to the LOAD only and should not be exported to other outlets, as this will damage the generator.
An advantage of connecting the generator to the Grid Input is that it can be paralleled, whereas the GEN/ AUX input cannot be paralleled. That means the inverter will extract what power it requires from ‘Grid Supply’ to charge its batteries.
If the generator is connected to the inverter and a generating signal exists, the inverter will switch 100% of the load to the generator and then slowly increase the charging currents to the batteries. Therefore, the generator must be able to supply both the charge current and the total load current.
The generator can be controlled via a relay with a set of dry-contacts to enable remote control. The current on the contacts is limited to approximately 1Amp 12V.
Below is a simple reference circuit of an auto-start system that can auto- start generators on a boat. (Sensing will be releasing a new OS E406 ( Auto- Start ) for better generator control).

5.11. Battery Discharge Page
To configure inverter’s shut-down settings, click on the BATTERY icon and then on ‘Shut Down’.

What this page displays:

• Lithium Mode: This is BMS protocol. Please reference the document(Approved Battery).
• Shutdown 10%: It indicates the inverter will shutdown if the SOC is below this value.
• Low Batt 20%: It indicates the inverter will alarm if the SOC below this value.
• Restart 40%: Battery voltage at 40% AC output will resume.

What you can do from this page:

• Adjust battery shut down (voltage or %)
• Adjust low battery warning (voltage or %)
• Adjust restart (voltage or %)

PLEASE NOTE
Activating Shutdown causes the inverter to enter standby-mode. It does not entirely shut down the inverter. Total shutdown occurs at voltages below 19V.
The voltage displayed on the Sensing Inverter will vary depending on whether the inverter is charging or discharging the batteries.

Since the batteries are 48V, the figure on the left is x4:

• Fully Charged 50.54V (Discharge Mode)
• Fully Charged 58.50V (Charge Mode)
• 75% Charged 49.60V (Discharge Mode)
• 75% Charged 54.80V (Charge Mode)
• 25% Charged 48.00V (Discharge Mode)
• 25% Charged 50.80V (Charge Mode)
• Completely Discharged 47.50V

Setting the cut-off higher is better for the batteries.
The batteries recommended for use with the Sensing systems are AGM Lead Acid or Lithium Battery Banks. (‘AGM’ means Absorbed Glass Matt construction that allows the electrolyte to be suspended new the plate’s active material. In theory, this enhances both the discharge and recharging efficiency. AGM batteries are very heavy as a result).
State of Charge
Bulk: The bulk charge is the first stage of a battery’s charging process, where the charger identifies the battery and its needs and then applies a high voltage to do the bulk of the charging. It involves about 80% of the recharge. The properly sized charger will give the battery as much current as it will accept up to charger capacity (25% of battery capacity in Amp hours).
Absorption: To fully charge a battery, a period of charging at a relatively high voltage is needed. This period of the charging process is called absorption. This occurs when the charging of a battery has reached 80% of its capacity. The remaining charge equals 20% approximately. It makes the charger hold the voltage at the charger’s absorption voltage (between 14.1 VDC and 14.8 VDC, depending on charger set points) and decreases the current until the battery is fully charged.
Float: The charging voltage is reduced to between 13.0 VDC and 13.8 VDC and held constant, while the current is reduced to less than 1% of battery capacity. This mode can be used to maintain a fully charged battery indefinitely.
Equalization: This is essentially a controlled overcharge that occurs at the end of the Bulk mode and the absorption phase and is called the ‘equalization voltage’. However, technically, this phase has another function.
Higher capacity wet (flooded) batteries sometimes benefit from this procedure, particularly the physically tall batteries. The electrolyte in a wet battery can stratify over time if not cycled occasionally. In equalization, the voltage is brought up above the typical peak charging voltage well into the gassing stage and maintained for a fixed (but limited) period. This stirs up the chemistry in the entire battery, ‘equalizing’ the strength of the electrolyte and knocking off any loose sulphation that may be on the battery plates.
5.12. Setting Up a Lithium Battery
To set up a lithium-ion battery, click on the BATTERY icon and visit the ‘Batt Type’ column.

What this page displays:

• This information will only display if the ‘Lithium’ option is selected under ‘Batt Type’.
• The type of communion protocol.
• Approved batteries.

What you can do from this page:

• Set up you Lithium-ion battery.

After installing a lithium battery, check the communications page by clicking on the ‘Li BMS’ icon to see if the BMS information is visible. Suppose some information is not displayed correctly (it should look like the diagram below), then there will be a communication error.

Therefore, if a communication error occurs:

1. Check that your data cable is the correct type.
2. Check that the data cable is plugged into the correct sockets. Usually, RS485 is employed, but some battery manufacturers use others.

PLEASE NOTE
With some types of lithium batteries, the BMS cannot be controlled by the Sensing inverter. In this case, treat the battery as a lead-acid type and set the charging and discharging protocol following the battery manufacturer’s specifications.
It is crucial to refer to the manuals that manufacturers produce for their batteries. That way, the chance of errors occurring during installation is significantly reduced. Below is a list of batteries that have been examined, tested, and approved by Sensing.

Brand| Model| 48V Storage Inverter| RS485 or CAN| Inverter Setup| Notes
---|---|---|---|---|---
DYNESS| B4850| ✔| CAN| 0|
POWERBOXF| 0
PYLON| US2000B| ✔| CAN| 0|
RS485| 12
US3000| CAN| 0
RS485| 12
US2000C| CAN| 0
RS485| 12
US3000C| CAN| 0
RS485| 12
UP5000| CAN| 0
RS485| 12
US5000| CAN| 0
RS485| 12
Force L1| CAN| 0
RS485| 12
Force L2| CAN| 0
RS485| 12
Brand| Model| 48V Storage Inverter| RS485 or CAN| Inverter Setup| Notes
---|---|---|---|---|---
HUBBLE| AM-2 5.5KW| ✔| CAN| 0|
SACRED SUN| SSIF2P15S48100C| ✔| RS485| 1|

Cut Line 3, 6, 8

FCIFP48100A| RS485| 1
SSIFP48100A| RS485| 1

Solar MD

| SS4074| ✔|

CAN

| 0| To be used with V2 Logger http://solarmd.co.za/invert- er- compatibility-solarmd/ sunsynk-and-solar-md/
SS4037| 0
SS202| 0
SHOTO| SDC-Box5(5.12KWH)| ✔| CAN| 0|
UZ ENERGY| L051100-A| ✔| CAN| 0|
L051100-A1| CAN| 0
L051100-B| CAN| 0
L051100-D| CAN| 0
Genix Green| ESS-5120| ✔| RS485| 6|
ESS-10240| RS485| 6
ESS-BOX2| RS485| 6
ESS-BOX3| RS485| 6
ESS-BOX4| RS485| 6
ES-BOX2| RS485| 6
ES-BOX5| RS485| 6
ES-BOX12| RS485| 6
Sunwido| H4850M| ✔| CAN| 0|
SunESS| CAN| 0
Atrix| CAN| 0
APIUM| AP-5| ✔| CAN| 0|
APR-5| CAN| 0
VISION Group| V-LFP51.2V100Ah-5KW| ✔| CAN| 13|
VLFP51.2V200Ah-5KW| CAN| 13
Alpha Ess| M4856-P| ✔| CAN| 0|
SMILE BAT| CAN| 0
GSL ENERGY| GSL051100A-B-GBP2| ✔| CAN| 0|
GSL051200A-B-GBP2| CAN| 0
GSL051280A-B-GBP2| CAN| 0
ZnP48100ESA1| CAN| 0
GSL-51-100| CAN| 0
GSL-51-200| CAN| 0
TOPBAND| TB51100F-T110| ✔| CAN| 0|
TB51120-T110| CAN| 0
Waco| 4K4 LV| ✔| CAN| 0|
5K3 LV| CAN| 0|
Brand| Model| 48V Storage Inverter| RS485 or CAN| Inverter Setup| Notes
---|---|---|---|---|---
DOWELL| IPACK C3.3| ✔| CAN| 0|
IPACK C6.5| CAN| 0|
IPACK C10| CAN| 0|
Gaiter| G2500-48V| ✔| CAN| 0|
G5040-48V| CAN| 0|
CF Energy| CFE2400| ✔| CAN| 0|
CFE5100| CAN| 0|
CFE5100S| CAN| 0|
Butterfish/ Greenwich| UP3686| | CAN| 0|
BYD| BYD Battery-Box LV Flex Lite| | CAN| 0|
Nerada| 48NPFC80| | RS485| 16| RJ45 Pin 1: GND RJ45 Pin 2: RS485_A RJ45 Pin 3: RS485_B
RJ45 Pins 4, 5, 6, 7, 8:    No
Connection
Single-phase Hybrid Inverter COMM version is E41E Single-phase Hybrid Inverter COMM version is 1001 – E016
48NPFC100| RS485| 16
48NPFC150| RS485| 16
48NPFC200|

RS485

|

16

Deye| SUNB-5.0-G01-48-PC SE-G5.1 PRO/AI-W5.1/ RW-M6.1| |

CAN

|

0

|
AOBOET| Uhome-LFP 5000| | CAN| 0|
Uhome-LFP 2400| CAN| 0|
Wattsonic| Li-LV battery series| ✔| RS485| 14|
KODAK| FL5.2| ✔| CAN| 0|
Fox ess| LD-48100P| ✔| RS485| 1|
PYTES Energy| E-BOX 48100R| | CAN| 0|
BST| MD48-100| | CAN| 0|
MD48-50| CAN| 0|
RightStart| HSD4870| | CAN| 0|
Rosen Solar Energy| LFP48V200AH| | CAN| 0|
LFP51.2V200AH| CAN| 0
ZRGP| ZR-FC48100-1630J1| | CAN| 0|
ZR-FS4850-16OSJ1| CAN| 0
ZR-FS48100-16OSJ1| CAN| 0
ZR-PBX1| CAN| 0
BALANCELL| P26| | CAN| 0|
P27| CAN| 0
Brand| Model| 48V Storage Inverter| RS485 or CAN| Inverter Setup| Notes
---|---|---|---|---|---
UFO| U-P48200-7| | CAN| 0|
U-P48100-7| CAN| 0
U-P48150-1| CAN| 0
DMEGC| L01-48100| | CAN| 0|
L02-48200| CAN| 0
Robusta| LR48100| | CAN| 0|
LR48200| CAN| 0
Solana| 4K Pack| | CAN| 0|
5K Pack| CAN| 0
EOS-5K Pack| CAN| 0
REVOV| R100| | CAN| 0|
PAND| PowerDrive Rack| | CAN| 0|
PowerDrive Cube| | CAN| 0
Clips (Zhong- Ning Lithe- um Battery Technology Taizhou Co., Ltd.)| Energic-M Series| | CAN| 0|
LBSA| LBSA 51.2V/100Ah| | CAN| 0|
Freedom won| Freedom won Lite Com- metrical 52V and LV Models| |

CAN

|

0

|
GSO| GBP48| | CAN| 0|
Sunsets| LFP5000| | CAN| 0|
Vest woods| VT Series| | CAN| 0|
VE Series| CAN| 0
Green Soul- tions Inc.| HOME E10| | CAN| 0|
bruits Energy| Power Porter 5.0/9.0/10.0/12.0/15.0| | CAN| 0|
COOLI| CLR5KWH| | CAN| 0|
CLW5KWH| CAN| 0
CLR10KWH| CAN| 0
CLW10KWH| CAN| 0
CLH10KWH| CAN| 0
ESS10240| CAN| 0
Far East Bat- tery| FEB LV Series| | CAN| 0|
VOLTA| VOLTA STAGE1| | CAN| 0|
VOLTA STAGE2| CAN| 0
VOLTA STAGE3| CAN| 0
VOLTA STAGE4| CAN| 0
Brand| Model| 48V Storage Inverter| RS485 or CAN| Inverter Setup| Notes
---|---|---|---|---|---
LEMAX| LM-JW-51.2V100Ah| | CAN| 0|
LM-JW-51.2V200Ah| CAN| 0
EVO| EVO 5.7KWH 48V-120Ah| | CAN| 0|
Yoshiro| BB-LFP-100Ah-P| | CAN| 0|
GEN2| Gen2 P48200-7| | CAN| 0|
Gen2 P48100-7| CAN| 0
Gen2 P48150-1| CAN| 0
BNP| 51.2V 100Ah| | CAN| 0|
Shanghai Green

Tech Co.,Ltd.

| GTEM-48V2500| | RS485| 12|
Gunpower| UPI.FP4845| | RS485| 15|
LD| LD-100P210J| | RS485| 17|
Felicity| LPBF Series| | RS485| 12|
LPBA-OL Series| | RS485| 12
LPBA-IL Series| | RS485| 12
BSL| B-LFP51.2V 100Ah| | CAN| 0| Float voltage 54.5V Absorption V 55.00V Disable equalization 0 Days Shutdown 20%
Low Batt 35%
Restart 50%
B-FLP51.2V 125Ah
B-LFP48-130E 51.2V 130Ah
B-LFP48-160E 51.2V 160Ah
B-LFP51.2V 200Ah Pow- enwall
Ebersol| lithium 48-100| | CAN| 0| BMS cable – straight RJ45 cable ( no need to change pin outs on cable)
Dip Switch settings is 1000 ( for single battery)
Blue Nova HC| BN52V-280-14.5K HC| | CAN| 0| Can be used with or with- out BMAC
BN52V-560-29K HC| | CAN| 0| https://www.bluenova.co.za/wp-content/up- loads/2015/11/BN-User-Manual-HC_v102.pdf
BN52V-840-43.6K HC| | CAN| 0|
BN52V-1120-58.2K HC| | CAN| 0| CANH = Pin 7
BN52V-1400-72.8K HC| | CAN| 0| CANL = Pin 8
Blue Nova

Rack Series

| BN52V-840-43.6K BR| | CAN| 0| Blue Nova-BMAC-Manu-al-v4.pdf
BN52V-1120-58.2K BR| | CAN| 0
Blue Nova Rack power| Rack Power BN52-100-5.2K BP| | CAN| 0|
Rack Power BN52-100-5.2K DU| | CAN| 0

PLEASE NOTE
When communications between the battery and inverter do not exist, do not overcharge your battery bank (current or voltage). Many lithium batteries are limited to 100A, some are lower, and some are higher. Ensure that voltage and current specifications provided by the battery manufacturer are followed.
If you are using lead acid batteries, then follow the equation of C x 0.25, which means that the maximum charge or discharge you can apply to a battery is a quarter of the AH rating of the overall battery array. E.g.: A 200Ah battery array composed of 4 x 200Ah batteries in series has a maximum discharge of only 50Ah (200 x 0.25 = 50)
Also, ensure the cable is thick enough to support the current and that the connected fuses are of the correct rating per the battery manufacturers’ recommendations.
5.13. Program Charge & Discharge Times
To set ‘Charge’ and ‘Discharge’ times, click on the ‘System Mode’ icon after clicking on the gear icon.

What this page displays:

• A setting to prevent the inverter exporting power to the grid – ‘Zero Export’.
• The ability to limit power supply to only the household loads – ‘Solar Export’.
• Set the power limits to supply only the loads connected to the LOAD port – ‘Priority to Load Only’.

If nothing ticked: This Mode allows the hybrid inverter to sell back any excess power produced by the solar panels to the grid. If the use time is active, the battery energy can also be sold into the grid. The PV energy will be used to power the load and charge the battery, and then excess energy will flow to the grid. Power source priority for the load is as follows:

1. Solar Panels.
2. Grid.
3. Batteries (until programable % discharge is reached).

Zero Export + Limit To Load Only: The hybrid inverter will only provide power to the backup load connected. The hybrid inverter will neither provide power to the home load nor sell power to the grid. The built-in CT will detect power flowing back to the grid and will reduce the power of the inverter only to supply the local load and charge the battery.

Zero Export: The hybrid inverter will not only provide power to the backup load connected but also give power to the home load connected. If PV power and battery power are insufficient, it will take grid energy as a supplement. The hybrid inverter will not sell power to the grid. In this mode, a CT is needed. For the installation method of the CT, please refer to the chapter “CT Connection”. The external CT will detect power flowing back to the grid and will reduce the power of the inverter only to supply the local load, charge the battery, and home load.

What you can do from this page:

•  Set a real time to start and stop charging or discharging the battery.
• Choose to charge the battery from the grid or generator.
• Limit export power to the grid.
• Set the unit to charge the battery from the grid or generator ticking ‘Grid’ or ‘Gen’ and set what times this needs to occur.
• Set the time to discharge the unit to the load or export to the grid by unticking ‘Grid’ and ‘Gen’.

Concerning the detailed next figures:

1. Tick this box to not export power back to the grid (the CT coil will detect power flowing back to the grid and will reduce the power of the inverter only to supply the local load).
2. Tick this box if you wish to export your solar power back to the grid.
3. Tick this box if you only want to supply power to the load side of the inverter.
4. ‘Zero Export Power’ is the amount of power flowing from the grid to the inverter. Set this value to ’20 – 100W’ to instruct the inverter to always take the prescribed amount of power from the grid to minimize the tripping of sensitive pre-paid electricity meters if ‘Reverse Power Detection’ occurs.
5. This controls the maximum overall power, both to the ‘Load’ and ‘Grid’ ports combined. It is set to Low if an ‘over-current’ fault occurs.
6. Tick this box if you wish to set the solar panels to give power to the ‘Load’. If you untick this box, the solar will send power to charge the batteries.

Example:
This example shows the battery being charged up to 100% by both the Grid and Solar PV from 8 a.m. to 11 a.m. and then being able to supply up to 4kW of battery-power to the ‘essential’ loads from the ‘Load’ Port until the battery SOC drops to 50%.

IMPORTANT – When charging the batteries from the Grid or Generator, please ensure you have set the correct battery-charging settings on the battery charge as shown in Section 4.10 ‘Battery Setup’ Home Page.
If the ‘Use Timer’ function is activated then the inverter will use the battery power according to your settings when the Grid is present. If this function is not set, the batteries WILL ONLY be used for backup when there is no utility grid power.
Example:
The power produced is supplying the ‘Non-Essential Load’ while the inverter is set at a maximum power of 8kW (Max Sell Power). The inverter is connected to the grid, but no export is performed. The unit allows small amounts of power to flow from the Grid (100W Zero Export Power) to prevent any back-flow. In this example, the solar PV is prioritized to supply the Load first and then subsequently, charge the battery.

5.14. Grid Supply Page
In the Settings menu, click on the GRID icon.
Example:
During 01:00-05:00, when the battery SOC is lower than 80%, it will use the grid to charge the battery until the battery SOC reaches 80%.
During 05:00-08:00 and 08:00-10:00, when battery SOC is higher than 40%, the hybrid inverter will discharge the battery until the SOC reaches 40%.
During 10:00-15:00, when the battery SOC is higher than 80%, the hybrid inverter will discharge the battery until the SOC reaches 80%.
During 15:00-18:00, when the battery SOC is higher than 40%, the hybrid inverter will discharge the battery until the SOC reaches 40%.
During 18:00-01:00, when the battery SOC is higher than 35%, the hybrid inverter will discharge the battery until the SOC reaches 35%.

What this page displays:

• Grid Mode: General Standard, UL1741 & IEEE1547, CPUC RULE21, SRD-UL-1741, CEI 0-21, EN50549_CZ, Australia A, Australia B, Australia C, New Zealand, VDE4105, OVE_Directive_R25, EN50549_CZ_PPDS_L16A, NRS097, G98/G99, G98/G99_NI, ESB Networks (Ireland). Please follow the local grid code and then choose the corresponding grid standard.
• Set the Grid frequency.
• Set the Grid type.

What this page displays:

• Normal connect: The allowed grid voltage/frequency range when the inverter first time connects to the grid.
• Normal Ramp rate: It is the startup power ramp.
• Reconnect after trip: The allowed grid voltage/frequency range for the inverter connects the grid after the inverter trip from the grid.
• Reconnect Ramp rate: It is the reconnection power ramp.
• Reconnection time: The waiting time period for the inverter to connect the grid again.
• Power factor: This is used to adjust the inverter’s reactive power.

What this page displays:

• HV1: Level 1 overvoltage protection point;
• HV2: Level 2 overvoltage protection point;
• HV3: Level 3 overvoltage protection point.
• LV1: Level 1 undervoltage protection point;
• LV2: Level 2 undervoltage protection point;
• LV3: Level 3 undervoltage protection point.
• HF1: Level 1 over frequency protection point;
• HF2: Level 2 over frequency protection point;
• HF3: Level 3 over frequency protection point.
• LF1: Level 1 under frequency protection point;
• LF2: Level 2 under frequency protection point;
• LF3: Level 3 under frequency protection point;
• 0.10s: Trip time.

What this page displays:

• FW: This series inverter is able to adjust inverter output power according to grid frequency.
• Droop f: The percentage of nominal power per Hz.

For example: “Start freq f>50.2Hz, Stop freq f<50.2, Droop f=40%PE/Hz” when the grid frequency reaches 50.2Hz, the inverter will decrease its active power at Droop f of 40%. And then, when the grid system frequency is less than 50.2Hz, the inverter will stop decreasing output power. For the detailed setup values, please follow the local grid code.

What this page displays:
V(W): It adjusts the inverter active power according to the set grid voltage.
V(Q): It adjusts the inverter reactive power according to the set grid voltage. This function adjusts inverter
output (active and reactive) power when grid voltage changes.
Lock-in/Pn 5%: When the inverter active power is less than 5% rated power, the VQ mode will not take effect.
Lock-out/Pn 20%: If the inverter active power increases from 5% to 20% rated power, the VQ mode will take effect again.
For example: V2=110%, P2=20%. When the grid voltage reaches 110% times of rated grid voltage, the inverter output power will reduce its active output power to 20% rated power.
For example: V1=90%, Q1=44%. When the grid voltage reaches 90% times of the rated grid voltage, the inverter output power will output 44% reactive output power. For the detailed setup values, please follow the local grid code.

What this page displays:
P(Q): It adjusts the inverter reactive power according to the set active power.
P(PF): It adjusts the inverter PF according to the set active power.
Lock-in/Pn 50%: When the inverter output active power is less than 50% rated power, it won’t enter the P(PF) mode.
Lock-out/Pn 50%: When the inverter output active power is higher then 50% rated power, it will enter the P(PF) mode.
For the detailed setup values, please follow the local grid code.
PLEASE NOTE
Only when the grid voltage is equal to or higher than 1.05 times the rated grid voltage will the P(PF) mode take effect.
5.15. Advanced Settings for Paralleling Inverters
To configure multi-inverter settings, click on the ADVANCE icon.

What this page displays:
If the inverter operates as a master or a slave.
Modbus Device ID: ‘Modbus SN’ that must be unique for each inverter connected to the bus/wire.
Ex Meter For CT: When in a Three-phase system with a CHNT Three-phase energy meter (DTSU666), click
the corresponding phase where the hybrid inverter is connected. e.g. when the hybrid inverter output connects to A phase, please click A Phase.
What you can do from this page:
Set the inverter as a master or slave per bus/wire.
Set the phase in which the inverter will be paralleled.
Set the Modbus SN for paralleling.
The Sensing Inverter can be wired standalone or where more power is required it can be connected in parallel either single or 3 phase configuration. The maximum number of inverters that can be paralleled in a single phase utility grid is 16 and the maximum number that can be paralleled in a three phase utility grid is 15A.
A master single phase inverter is capable to operate with other 15 slaves inverters. Thus, to parallel 16 inverters in a single phase utility, one will operate as the master, and the other 15 will operate as slaves. To parallel 15 inverters in a three phase utility grid is necessary to set three inverters as master and the others as slaves:

• Phase A: Master A and 4 Slaves A
• Phase B: Master B and 4 Slaves B
• Phase C: Master C and 4 Slaves C

In a three phase utility grid, the paralleled inverters will operate as a normal three-phase supply with perfect phase rotation, capable of power single phase (220 VLN ) and three phase (380 VLL ) loads. For stability, all the batteries need to be connected in parallel. It is recommended a minimum cable size of 50mm2 diameter with fuse isolators to each inverter.
Each invert will require a fuse isolator with surge protection and each group circuit will require an RCD. If the batteries as supplying power to the main load during the outage then a change over switch will also be required or a split load can be used.
The CT coils used to limit export power must only be connected to the master. Therefore, if six inverters are paralleled, three CT coils will be required.
Connect a RJ45 communication cable between each inverter; the order is not important since both sockets are the same, so there is no IN or OUT.
Each phase must only have one master and the others set to slave.
Each inverter must have a unique Modbus number.
The maximum length of the communication cables is 2 meters (do not exceed this value).
All batteries must be connected in parallel and the MPPTs must be kept separate.
IMPORTANT: When configuring inverters in parallel for a single or three- phase, it is important to first check firmware versions to be all the same on all inverters. It is strongly recommended to request firmware update on all inverters to the latest and the exact same firmware version.
IMPORTANT: All inverters in a parallel system must have their own isolating load breaker before it goes to the parallel breaker to ensure while programming that the load outputs are isolated from each other.
Only once confirmed all inverters are programmed correctly in parallel or three-phase then only the isolating breakers can be switched on, which then feeds to the main load output breaker where the actual parallel or three-phase connection is made that feeds the loads.
When configuring a three-phase system using three single-phase inverters, one per phase. It is extremely important to check phase rotation to be clockwise feeding the inverters and to confirm the output is also clockwise on phase rotation.
PLEASE NOTE
The cables have two ends, one to be specifically connected to the BMS and another one to be connected to the inverter, do not change it. If the communication is not working correctly between inverters, then errors will appear on display. In this case, please check  all settings and data cables.
PLEASE NOTE

• All inverters in a parallel system must have their own isolating load breaker before it goes to the parallel breaker to ensure while programming that the load outputs are isolated from each other.
• The grid input can also be connected in parallel.
• You cannot connect the Aux/Gen port in parallel because this causes a conflict between the generator’s frequency and the grid’s frequency.

If you need further help please refer to the Sensing website where you will find training videos and Frequently Asked Questions www.sunsynk.com. Firmware prior installation is important to be updated and all inverters in parallel or three phase system must be the same.
Common questions that occur when paralleling inverters:

Q1: What is the sequence to install/connect/commission?

First of all, leave the main supplies off. Next, connect all communication cables, set up all LCDs and then, last of all, turn on the main supplies.

Q2: What are the indications that the communication and the system are OK or not?

Parallel errors will be shown as fault F46 on the display.

Q3: What are the consequences of not setting one inverter in a parallel mode?

It can damage the inverter.

Q4: What are the consequences of having more than one Master Inverter or having no inverter set as ‘Master’?

It can damage the inverter. There are cases in which it is possible to have more than one master. For example, as aforementioned, six inverters paralleled in a three phase utility grid (three masters).

Q5: What are the consequences for setting A, B, or C phases wrong while in parallel mode?

It can damage the inverter. Recommend checking the phase rotation with a meter before switching on.

Q6: What are the consequences of factory resetting, power cycling, or firmware updating one inverter in a parallel system?

It can damage the inverter. Inverters needs to be isolated from each other before factory reset or firmware update.

Q7: What consequences for changing ALL/ANY settings while operating in parallel mode?

It can damage the inverter and fault F46 will be indicated on the display.

5.16. Connecting the DRM’s
This can be selected under advance settings.

This can be selected under advance settings.

5.17. Advanced Function Setup

System spellcheck: Disable. this is only for the factory.
Signal ISLAND MODE: When “signal island mode” is checked and the inverter connects the grid, the ATS port voltage will be 0. When “signal island mode” is checked and the inverter is disconnected from the grid, the ATS port voltage will output 230Vac. This feature and outside NO type relay can realize N and PE disconnection or bond.
BMS Err Stop: When it is active, if the battery BMS fails to communicate with an inverter, the inverter will stop working and report fault.
Backup Delay: 0-300s adjustable.
Gen Peak-shaving: When the generator’s power exceeds its rated value, the inverter will provide the redundant part to ensure that the generator will not overload.
ATS: It is related to ATS port voltage. It is better in ATS ON “uncheck” position.
For more details, please refer to the left-side picture.
5.18. Solar Power Generated
This page shows the daily, monthly, yearly, and total solar power produced. Access this page by clicking on the ‘Solar/Turbine’ icon on the Home Page.

5.19. Grid Power
This page shows the Daily / Monthly / Yearly and total grid power export or consumed. Access this page by clicking on the ‘Solar/Turbine’ icon on the home page.

5.20. Advanced Settings for Wind Turbines
To configure wind turbine settings, click on the ADVANCE icon.

What this page displays:

•  If one or both of the MPPTs are connected to a wind turbine.

What you can do from this page:

•  Select the MPPT to be used as a turbine input.
  The table below shows the maximum current depending on the voltage of the wind turbine.

PLEASE NOTE

• DO NOT use a wind turbine that exceeds 400V.
• Use a self-breaking wind turbine. Once the batteries are fully charged and the inverter is not exporting any power, the load can drop. This can cause the turbine to speed up dramatically, which can be very dangerous and usually happens suddenly. Thus, it is essential to use a self-breaking turbine.

Most wind turbines are three-phase PM type. Therefore, either a wind turbine controller or a direct connection to the MPPT via a simple protection circuit will be required.

Dump Load or Diversion Load is an important part of an off-grid power system. When the battery ( Battery Bank ) is fully charged, and the water turbine / wind turbine / solar PV module is still generating, a dump load is a useful device to send spare electricity to. This can be done by using a switch on a smart load option or by utilising a wind turbine controller with a built-in dump load. Also, a hot water tank controlled via a smart-load can act as a good ‘dump-load’ however, in very windy conditions it may be necessary to shunt the output.

5.21. Advanced Settings for Auxiliary Load
To configure Auxiliary Load (previously known as “smart load”) settings, click on the AUX LOAD icon.
What this page displays:

• Use of the Gen (Aux) input or output.
• Generator peak shaving is ON or OFF.
• Peak Power Shaving value.

What you can do from this page:

• Set up a generator input.
•  Set up an auxiliary (smart) load.
• Switch on the generator and/or grid peak power saving and set the power shaving value.
• Use an additional inverter or micro inverter.

A nice feature of this page is that when the batteries are full and the inverter is still producing power from the solar PV or turbine, it is possible to direct the power generated to another load such as a water heater.

For Gen Input mode:
Gen Input: Tick this box if using a Generator. Allowed Max. power from diesel generator.
Peak shaving power: This is a technique used to reduce electrical power consumption during periods of maximum demand on the utility grid. This enables the user to save substantial amounts of money due to the expensive peak power charges.
Gen Load OFF Batt: Battery level when the Aux load switches off.
Gen Load ON Batt: Battery level when the Aux load switches on.
AC couple on load side: Connecting the output of the on-grid inverter at the load port of the hybrid inverter. In this the situation, the hybrid inverter will not be able to show the load power correctly.
AC couple on grid side: This function is reserved.
For Aux Load Output mode:

Aux Load Output: This mode utilizes the Gen input connection as an output which only receives power when the battery SOC and PV power is above a user programmable threshold.
For Example: Power=500W, ON: 100%, OFF=95%. When the PV power exceeds 500W, and battery bank SOC reaches 100%, Smart Load Port will switch on automatically and power the load connected. When the battery bank SOC < 95% or PV power < 500w, the Smart Load Port will switch off automatically.
On Grid always on: When click “on Grid always on” the smart load will switch on when the grid is present.
Solar Power: Power limiter to the maximum power allowed to the Aux load.
Aux Load OFF Batt Battery SOC at which the Smart load will switch off.
Aux Load ON Batt: Battery SOC at which the Smart load will switch on. Also, the PV input power should exceed the setting value (Power) simultaneously and then the Smart load will switch on.
For Micro Inverter Input mode:

Micro Inverter Input: To use the Generator input port as a micro-inverter on grid inverter input (AC coupled), this feature will also work with “Grid-Tied” inverters. Tick this box if intending to connect a supplementary inverter or micro inverter (Max. 4kW).
AC Couple OFF Batt: When the battery SOC exceeds setting value, Microinverter or the grid-tied inverter will shut down.
AC Couple ON Batt: If choosing “Micro Inv input”, as the battery SOC reaches a gradually setting value (OFF), During the process, the microinverter output power will decrease linearly. When the battery SOC equals to the setting value (OFF), the system frequency will become the setting value (AC couple Fre high), and the Microinverter will stop working. Stop exporting power produced by the microinverter to the grid.
PLEASE NOTE
Micro Inv Input OFF and On is valid for certain FW versions only.

OPERATING MODES

6.1. Mode I: Basic

6.2. Mode II: With Generator

6.3. Mode III: With Smart Load

6.4. Mode IV: AC Couple

Fault Codes

To check the fault codes click on the FAULT CODES icon on the settings menu.

If any of the fault messages listed in the following table appear on your inverter and the fault has not been removed after re-starting, please contact your local vendor or service centre. The following information is required:

1. Inverter serial number.
2. Distributor or service centre of the inverter.
3. On-grid Power Generation Date.
4. The problem description (including the fault code and indicator status displayed on the LCD) with as much detail as possible.
5. Owner’s contact information.

(120/240Vac) or three-phase system (120/208Vac), the backup load port N line needs to connect ground;
2.  If the fault still exists, please get in touch with us for help.
F13| Working Mode Change| Inverter work mode changed
1. Reset the inverter. 2.Seek help from Sunsynk.
F18| AC over current fault or hardware| AC Slide over current fault.
1.  Check if the backup load power is within the range of the inverter.
2. Restart, and check if it is normal.
Error Code| Description| Solutions
---|---|---
F20| DC over current fault of the hardware| DC side over current fault
1.  Check PV module connect and battery connect;
2.  When in the off-grid mode, the inverter startup with a big power load, and it may report F20. Please reduce the load power connected.;
3.  Turn off the DC and AC switches, wait one minute, and then turn on the DC/AC switch again.
4.  Seek help from us if you can not return to a normal state.
F23| AC leakage current is trans over current| Leakage current fault
1. Check the PV module and inverter cables. 2.You may have a faulty PV panel (earth short) 3.Restart inverter
F24| DC insulation impedance failure| PV isolation resistance is too low
1. Check if the connection of PV panels and inverter are firmly connected.
2. Check if the earth bond cable on inverters is connected to the ground.
F26| The bus bar is unbalanced| 1. Please wait 5 minutes to see if it returns to normal.
2.  Fully reset the inverter.
F29| Parallel CANbus fault| 1.  When in parallel mode, check the parallel communication cable connection and hybrid communication address set- tings.
2.  During the parallel system startup period, inverters will re- port F29. When all inverters are in ON status, it will disappear automatically;
3.  If the fault exists, please contact us for help.
F34| AC Overcurrent fault| 1.  Check the backup load connected, make sure it is in al-lowed power range;
2.  If the fault still exists, please contact up for help.
F35| No AC grid| No utility
1. Please confirm grid is lost or not;
2.  Check the grid connection;
3.  Check the switch between inverter and grid in on or not;
2. If the fault still exists, please contact up for help.
F41| Parallel system stop| 1.  Check the hybrid inverter working status. If there’s 1pcs hybrid inverter is in OFF status, the other hybrid inverters may report F41 fault in parallel system.
2.  If the fault exists, please contact us for help.
F42| AC line low voltage| Grid voltage fault
1. Check if the voltage is in the range of standard voltage in specification this can be adjusted via the grid set up page.
2. Check if grid cables are correctly connected.
Error Code| Description| Solutions
---|---|---
F47| AC Over Freq Fault| Grid frequency out of range
1.Check if the frequency is in the range of specification 2.You may need to adjust the frequency on the grid set up
page.
F48| AC Under Freq Fault| Grid frequency out of range
1. Check the frequency is in the range of specification or not.
2. Check whether AC cables are firmly and correctly con- nected.
3.  Seek help from us, if can not go back to normal state.
F56| DC bus bar voltage is too low| Battery low voltage
1.  Check if the battery voltage is too low.
2.  If the battery voltage is too low use the PV or grid to charge the battery.
3.  Check the battery BMS
Important: Especially with Lithium batteries, ensure that the batteries Max. discharge current or power specification is the same or higher than the inverter specification.
F58| Battery_comm_Lose| 1.   It tells the communication between hybrid inverter and battery BMS disconnected when “BMSErr-Stop” is ac- tive”.
2.  If don’t want to see this happen, you can disable “BMS Err-Stop” item on the LCD.
3. If the fault still exists, please contact us for help
F63| ARC Fault| 1. ARC fault detection is only for US market.
2. Check PV module cable connection and clear the fault.
3. Seek help from us, if can not go back to normal state.
F64| Heat sink high-temperature failure| Heat Sink temp is too high
1. Check if the working environment temperature is too high. 2.Turn off the inverter for 30 minutes and restart.
Fault Information| Instruction| Fault Information| Instruction
---|---|---|---
F01| DC_Inversed_Failure| F33| AC_OverCurr_Fault
F02| DC_Insulation_Failure| F34| AC_Overload_Fault
F03| GFDI_Failure| F35| AC_NoUtility_Fault
F04| GFDI_Ground_Failure| F36| AC_GridPhaseSeque_Fault
F05| EEPROM_Read_Failure| F37| AC_Volt_Unbalance_Fault
F06| EEPROM_Write_Failure| F38| AC_Curr_Unbalance_Fault
F07| GFDI_Fuse_Failure| F39| INT_AC_OverCurr_Fault
F08| GFDI_Relay_Failure| F40| INT_DC_OverCurr_Fault
F09| IGBT_Failure| F41| AC_WU_OverVolt_Fault
F10| AuxPowerBoard_Failure| F42| AC_WU_UnderVolt_Fault
F11| AC_MainContactor_Failure| F43| AC_VW_OverVolt_Fault
F12| AC_SlaveContactor_Failure| F44| AC_VW_UnderVolt_Fault
F13| Working Mode change| F45| AC_UV_OverVolt_Fault
F14| DC Over Curr Failure| F46| AC_UV_UnderVolt_Fault
F15| AC Over Curr Failure| F47| AC_OverFreq_Fault
F16| GFCI_Failure| F48| AC_UnderFreq_Fault
F17| Tz_COM_OC_Fault| F49| AC_U_GridCurr_DcHigh_Fault
F18| Tz_Ac_OverCurr_Fault| F50| AC_V_GridCurr_DcHigh_Fault
F19| Tz_Integ_Fault| F51| AC_W_GridCurr_DcHigh_Fault
F20| Tz_Dc_OverCurr_Fault| F52| AC_A_InductCurr_DcHigh_Fault
F21| Tz_GFDI_OC_Fault| F53| AC_B_InductCurr_DcHigh_Fault
F22| Tz_EmergStop_Fault| F54| AC_C_InductCurr_DcHigh_Fault
F23| Tz_GFCI_OC_Fault| F55| DC_VoltHigh_Fault
F24| DC_Insulation_Fault| F56| DC_VoltLow_Fault
F25| DC_Feedback_Fault| F57| AC_BackFeed_Fault
F26| BusUnbalance_Fault| F58| AC_U_GridCurr_High_Fault
F27| DC_Insulation_ISO_Fault| F59| AC_V_GridCurr_High_Fault
F28| DCIOver_M1_Fault| F60| AC_W_GridCurr_High_Fault
F29| AC_AirSwitch_Fault| F61| AC_A_InductCurr_High_Fault
F30| AC_MainContactor_Fault| F62| AC_B_InductCurr_High_Fault
F31| AC_SlaveContactor_Fault| F63| ARC_Fault
F32| DCIOver_M2_FaulT| F64| Heatsink_HighTemp_Fault

PLEASE NOTE

• The Single-Phase Hybrid Inverter is designed for grid-connected operation.
• The inverters meet the main standards concerning safety and electromagnetic compatibility. Before leaving the factory, all inverters undergo rigorous testing to ensure the inverter can operate reliably, as presented in Chapter 3, ‘Technical Specifications’.

If you need further help please refer to the Sensing website where you will find training videos and frequently asked questions www.sunsynk.com.

COMMISSIONING

8.1. Start-Up / Shutdown Procedure
The inverter must be installed by a qualified / licensed electrical engineer in accordance with the country’s wiring regulations.
Before switching on, the installation engineer must have completed the Earth Bond, RCD and earth leakage tests, checked that the solar panel Vac voltage does not exceed 480V and checked the battery voltage.
Power ON Sequence:

1. Switch on AC
2. Press Start Button
3. Switch on Battery and battery breaker
4. Switch on the DC (PV Isolator)

Shutdown Sequence:

1. Switch off AC
2. Press the start button
3. Switch off the battery and the battery breaker
4. Switch off the DC (PV isolator)

8.2. Information for Commissioning the Inverter
After you have successfully powered up the inverter, it must be programmed and set up as per the programming feature above.

| Check each bond on the solar panels| Check the VOC does not exceed 480V| Ensure both MPPTs are balanced
---|---|---|---
| Measure the supply volt- age check it matches the settings of the inverter| If it falls out of the setting range it will cause the in- verse shut down and alarm| See Grid Setup page
| Check the battery charge and discharge is within the C rating of the battery.
Too high will damage the battery| | Check the battery BMS is communicating with the inverter
| This is the heart of the system this controller everything| Ensure you are familiar with this, if you fully under- stand the controller you will fully appreciate the ca- abilities of there inverter| See section ‘Program  Charge / Discharge Times’
---|---|---|---
| This is for paralleling sys- tems, and wind turbine| If paralleling inverters in 3 Phase check you phase rotation before switching on the AC Load, in 3 Phase the output voltage will increase across phase to 400V| If using a wind turbine please ensure you have the correct limiting resis- tor, caps and rectifier
| Familiarize yourself with common fault codes| |

8.3. GDFI Fault
Before the inverter connects to the Grid, it will detect the impedance (effective resistance) of the solar PV + to Ground, and the impedance of the solar PV – to ground. If any of the impedance values are less than 33kΩ, the inverter will not connect to the Grid and will report an error F24 on its LCD.

MAINTENANCE

The inverter is low maintenance. However, it is important that at least twice a year (for dusty environments this may need to be carried out weekly) all the cooling fans, air ducts are cleaned and dust free.
Check if there are no fault codes and Lithium battery communication is correct.
Weekly cleaning statement: Suggest micromesh filters as an available option, micro ants here are a real problem.

APPENDIX A

The following table is the connection on battery side:

Pin 5: CAN-L
Pin 2, 3, 4, 6, 7, 8: NC
RS485| Pin 1: RS485B
Pin 2: RS485A
Pin 3, 6: GND
Pin 7: RS485A
Pin 8: RS485B
Pin 4, 5: NC
RS232| Pin 3: BMS transmit; Computer receiver Pin 4: BMS receiver; Computer transmit Pin 5: GND
Pin 1, 2, 6: NC

The following table is the connection on inverter side :

CAN

| Pin 4: CAN-H
Pin 5: CAN-L
Pin 1, 2, 3, 6, 7, 8: NC
RS485| Pin 1: RS485B
Pin 2: RS485A
Pin 3, 6: GND
Pin 7: RS485A
Pin 8: RS485B
Pin 4, 5: NC
RS232| Pin 3: BMS transmit; Computer receiver Pin 4: BMS receiver; Computer transmit Pin 5: GND
Pin 1, 2, 6: NC

APPENDIX B

Inverters sold in Australia will be set to the Default Australian standards.

APPENDIX C

The Sensing Single-Phase Hybrid Inverter inverter is compatible with the Solar Man app, via a Wi-Fi or GSM data logger (See Solar Man instruction manual).

APPENDIX D

If an external Residual Current Device (RCD) is used it should be of Type A/AC with a tripping current of 30mA or higher.
Use of RCDs
Residual Current Devices (RCDs): An RCD dedicated for an Inverter Energy System (IES) may be used to meet the mechanical cable protection requirements of AS/NZS3000 for the cable from the switchboard to the IES.
If an RCD is installed the engineer must:

1. Disconnect all live conductors (including both active and neutral conductors) and
2. Be of the type specified in the inverter manufacturer’s instructions or as labelled on the inverter.

We recommend the use of an RCD on all circuits and sub-circuits connected to the Sensing Inverter. Below is the specifications for a Residual Current Breaker with Overcurrent Protection (RCBO)

APPENDIX E

The Sunsynk inverter can be connected to the internet, but you need to add a data logger to do this.
The inverter is compatible with Solar Man data-loggers, which you can obtain from us with your distributor

1. LAN-Type Data Logger
2. Wi-Fi-Type Data Logger
3.  GSM-Type Data Logger

To setup the Internet connection for the Data Logger, please refer to the App User instructions. The Data Logger should be connected to the bottom of the inverter via the connection socket marked WIFI.
For more information, training videos, software upgrades, help line, forum please refer to http://www.sunsynk.com – Tech Support (Do not forget to register first on the website).

Sensing
@energysolutions
sunsynkofficial
CONTACT US
Email us: sales@sunsynk.com
Tel# 852-2884-4318
VAT Number: 175669460
HK Address: Unit 702-704, 7/F., Redwood Plaza, 6 How Ming Street,
Kwun Tong, Kowloon, Hong Kong.

References

• Leaders In Lithium-Ion Storage | Solar MD | Cape Town

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