Hoymiles HYS-3.0LV-EUG1 User manual

Open Energy for All
USER MANUAL
HYS-3.0LV-EUG1/AUG1
HYS-3.6LV-EUG1/AUG1
HYS-4.6LV-EUG1/AUG1
HYS-5.0LV-EUG1/AUG1
HYS-6.0LV-EUG1/AUG1
HAS-3.0LV-EUG1/AUG1
HAS-3.6LV-EUG1/AUG1
HAS-4.6LV-EUG1/AUG1
HAS-5.0LV-EUG1/AUG1
Region: Global REV1.1 hoymiles.com

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 01
CONTENTS
1. Safety Introduction 02
1.1 Explanation of Symbols 02
1.2 Safety Information 03
2. Product Introduction 05
2.1 Product Overview 05
2.2 Operating Modes 07
2.3 System Diagram 09
2.3.1 Basic Diagram 10
2.3.2 Retrot System 14
2.3.3 Unacceptable Diagram 15
3. Installation Instruction 16
3.1 Packing List 16
3.2 Installation Tools 17
3.3 Mounting 18
3.3.1 Selecting the Mounting Location 18
3.3.2 Mounting Inverter 19
3.4 Electrical Wiring Connection 19
3.4.1 Grounding Connection 19
3.4.2 AC Wiring Connection 20
3.4.2.1 Grid Connection 20
3.4.2.2 GEN Connection 21
3.4.2.3 EPS Connection 21
3.4.3 PV Wiring Connection 23
3.4.4 Battery Wiring Connection 24
3.4.5 Communication Wiring Connection 25
3.4.5.1 BMS Connection 26
3.4.5.2 Smart Meter and CT Connection 27
3.4.5.3 DRM Connection 28
3.4.5.4 DI Connection 29
3.4.5.5 DO Connection 30
3.4.5.6 Parallel Connection 30
3.4.6 DTS Connection 31
3.5 Operation 32
3.5.1 S-Miles Cloud App 32
3.5.1.1 DTS Online Setting 32
3.5.1.2 System Commissioning of Wireless Access Point (AP) Connection 33
3.5.2 Commissioning 35
3.5.3 Decommissioning 35
4. Troubleshooting 36
5. Technical Datasheet 39
5.1 HYS Series Technical Parameters 39
5.2 HAS Series Technical Parameters 43
Appendix A 47

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 02
1. Safety Introduction
1.1 Explanation of Symbols
The following types of safety precautions and general information symbols used in this manual must be
followed during the installation, operation and maintenance of the inverter.
Symbol Usage
Indicates a hazard with a high level of risk that, if not avoided, will result in
death or serious injury.
Indicates a hazard with a medium level of risk that, if not avoided, can result in
death or serious injury.
Indicates a hazard with a low level of risk that, if not avoided, can result in
minor or moderate injury.
Indicates a situation that, if not avoided, can result in property damage.
NOTICE is used to address practices not related to personal injury.
Caution! Failure to observe any warnings contained in this manual may result
in injury.
Danger to life due to high voltages!
Only qualified personnel can open and maintain the inverter.
Burn danger due to hot surface that may exceed 60℃.
Refer to the operating instructions.
10min
After the inverter is turned off, wait for at least 10 minutes before opening the
inverter or touching live parts.
Products shall not be disposed as household waste.
CE mark.
UKCA mark.
DANGER
WARNING
CAUTION
NOTICE

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 03
This side up! This package must always be transported, handled and stored in
such a way that the arrows always point upwards.
Fragile - The package/product should be handled carefully and should never
be tipped over or slung.
Keep dry! The package/product must be protected from excessive humidity
and must be stored under cover.
6No more than six (6) identical packages are to be stacked on each other.
1.2 Safety Information
This chapter contains important safety and operating instructions. For future reference, please read and
keep this manual.
For the purpose of preventing personal injury and property damage, as well as ensuring the long-term
operation of the product, please read and follow all the instructions and cautions on the inverter and in this
user manual during installation, operation and maintenance.
Safety instructions in this manual cannot cover all precautions that should be taken. Please consider the
actual conditions on site when performing operations. Any damage caused by a violation of the safety
instructions in this manual shall not be the responsibility of Hoymiles.
Symbol Usage
Danger to life from electric shock
• Before performing any work on the inverter, disconnect all DC and AC power
from inverter and wait for at least 10 minutes. Hazardous voltage will exist
for up to 10 minutes after disconnection from power supply.
• Never insert or remove the AC or DC connections when the inverter is
running.
• Any live parts connected to battery ports cannot be touched before removing
all the power from inverter for 10 minutes because there is still danger to life
even battery voltage is lower than 60 V.
• Do not touch DC conductors or any non-isolated cable ends.
• The mounting location must be inaccessible to children.
• Never touch either the positive or negative pole of PV connecting device.
Strictly prohibit touching both at the same time.
WARNING
Risk of burns from hot surfaces
• The surface of the inverter might exceed 60℃, and touching the surface may
result in burns.
• Do not touch hot surfaces before it cools down.
DANGER

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 04
WARNING
• Only authorized service personnel are allowed to install the inverter or
perform servicing and maintenance.
• All powers, both AC and DC, should be disconnected from inverter before
attempting any maintenance, cleaning or working on any circuits connected
to inverter.
• Attempting to service the inverter yourself may result in a risk of electric
shock or fire and will void your warranty.
• Keep away from flammable and explosive materials to avoid fire disaster.
• The installation place should be away from humid or corrosive substances.
• The unit contains capacitors that remain charged to a potentially lethal
voltage after the mains, battery and PV supply have been disconnected.
• When accessing the internal circuit of inverter, wait for at least 10 minutes
after disconnecting the power.
• The inverter has a transformerless design on PV side. Neither positive nor
negative terminals of PV panels should be grounded.
• The frames of PV panels should be grounded for safety reasons.
• Ensure that existing wiring is in good condition and no wire is undersized.
• Do not disassemble any parts of inverter which are not mentioned in
installation.
• Authorized service personnel must use insulated tools when installing or
working with this equipment.
• PV modules shall have an IEC 61730 class A rating.
• The minimum rated temperature of the wire used is 90℃ (194℉).
• All electrical connections must be in accordance with local and national
standards.
• Only with permission of the local utility grid company, the inverter can be
connected to the utility grid.
• Do not open the inverter cover or change any components without
authorization, otherwise the warranty commitment for the inverter will be
invalid.
• Appropriate methods must be adopted to protect inverter from electrostatic
discharge; any damage caused by ESD is not warranted by the manufacturer.
• Prior to the application, please read this section carefully to ensure the
correct and safe application. Please keep the user manual properly.
• The manual contains no instructions for user-serviceable parts. See Warranty
for instructions on obtaining service.
• If an error occurs, contact your local distributor or qualified electricians.
CAUTION
NOTICE

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 05
2. Product Introduction
2.1 Product Overview
The HYS-LV series is a high-performance single-phase hybrid inverter with excellent reliability. The HAS-LV
series is designed for retrofitting PV systems. The intelligent EMS function supports self-consumption,
economic, and backup modes for multi-scenario applications. Monitoring management through S-Miles
Cloud allows users to remotely diagnose and track the system performance over time, offering superior
energy production.
H
I
J
K
A B CD E F G
* The image shown here is for reference only. The actual product received may differ.
Object Description
ADC Switch(1) (2)
BPV Terminals(3)
CBattery Terminals
DData Transfer Stick (DTS) Port
ECommunication Port
F GRID Connector
G Generator (GEN) Connector
H LED Indicators
I Label
JEmergency Power Supply (EPS) Connector
K PE Terminal
(1) Only for HYS series inverters.
(2) For HYS-LV-AUG1 series inverters, it has a DC switch lock.
(3) Only for HYS series inverters.

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 06
LED Indicators
Indicator Status Explanation
SOC
Full circle LEDs on – SOC is 75-100%
3/4 circle LEDs on – SOC is 50-75%
2/4 circle LEDs on – SOC is 25-50%
1/4 circle LED on – SOC is 10-25%
1/4 circle LED blink – SOC is below 10%
All circle LEDs off – No BMS communication
RUN
Off – Inverter is shut down
Blink 1 – Inverter is booting
Blink 2 – Inverter is in bypass mode
On – Inverter is turned on
PV
(Only for HYS)
Off – PV voltage is low
Blink 1 – PV power is low
On – PV is generating power
AC
Off – Grid is disconnected and EPS is off
Blink 1 –Grid is disconnected but EPS is on
On – Grid is connected
COM
Off – Communication error of both meter and BMS
Blink 1 – Meter communication failure
Blink 2 – BMS communication failure
On – BMS and meter communications are normal
FAULT
Off – No fault
On - A fault happens
Blink 1 – EPS port overload
Blink 2 – ISO/RCD fault
Blink 3 – Arc fault

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 07
2.2 Operating Modes
Main Operation Modes
The following operation modes are applicable for the HYS series inverter, and are also applicable for the
HAS series inverter which is connected with the PV inverter through the GEN port.
Self-consumption
Mode
In the daytime, solar energy
supports the loads first and
surplus energy is stored in the
battery. When the battery is fully
charged or reaches the maximum
charge power, the rest energy
is fed into grid (or limited if
required).
At night, the battery discharges for
the loads firstly and the grid will
supply the loads once the battery
power is not enough. In this mode,
battery cannot be charged from
grid at night.
Power flow of self-consumption mode
Economic Mode
In this mode, the time of battery
charge and discharge needs to be
set. Meanwhile, the battery can
be forced to charge from the grid
during the preset charge time.
For instance, the battery could be
charged or discharged according
to valley or peak electricity price.

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 08
Power flow of economic mode
Back-up Mode
In case of frequent power outages,
a backup power SOC can be
configured, which ensures that the
battery always has enough energy
to handle critical loads.
Power flow of back-up mode

Hybrid Inverter User Manual
© 2023 Hoymiles Power Electronics Inc. All rights reserved. 09
2.3 System Diagram
The HYS-LV series inverter can be connected to a battery and PV panels to form a PV Energy Storage
System (ESS). In the event of a grid outage, it can be used as an emergency power supply (EPS) through the
self-consumption of solar energy. It can either form a DC-coupled system for a new installation or an AC-
coupled system to retrofit existing installations.
• This diagram is a simplified system sketch that is only intended to explain
system architecture.
• Please refer to https://www.hoymiles.com for compatible battery list,
and the user should first contact Hoymiles for technical consultation and
obtain official confirmation prior to installing any battery not included in
the official published list.
• Lead-acid battery is not recommended for general customers as it requires
experienced installers and technicians who can fully understand the
battery parameters and configure the setting and installations correctly.
Please contact Hoymiles for technical support on lead-acid battery
installation.
NOTICE
The HAS-LV series inverter can be connected to a battery and any grid-connectd PV inverters to form a PV
Energy Storage System (ESS). In the event of a grid outage, it can be used as an emergency power supply
(EPS) through the self consumption of solar energy, as the grid-connected PV inverter can also work when
it is connected to the GEN port even if there is a grid outage.