Hoymiles HYS-3.0LV-EUG1 User manual

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USER MANUAL
HYS-3.0LV-EUG1
HYS-3.6LV-EUG1
HYS-4.6LV-EUG1
HYS-5.0LV-EUG1
HYS-6.0LV-EUG1
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Hybrid Inverter User Manual
© 2022 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. 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 12
3. Installation Instruction 13
3.1 Packing List 13
3.2 Mounting 14
3.2.1 Selecting the Mounting Location 14
3.2.2 Mounting Inverter 15
3.3 Electrical Wiring Connection 15
3.3.1 Grounding Connection 15
3.3.2 PV Wiring Connection 16
3.3.3 Battery Wiring Connection 17
3.3.4 AC Wiring Connection 18
3.3.4.1 Grid Connection 18
3.3.4.2 EPS Connection 19
3.3.5 Communication Wiring Connection 20
3.3.5.1 BMS Connection 21
3.3.5.2 Smart Meter and CT Connection 22
3.3.5.3 DRM Connection 23
3.3.5.4 DI Connection 24
3.3.5.5 DO Connection 24
3.3.5.6 Parallel Connection 25
3.3.6 DTS Connection 25
3.4 Operation 26
3.4.1 S-Miles Cloud APP 26
3.4.2 Commissioning 27
3.4.3 Decommissioning 27
4. Troubleshooting 28
5. Technical Datasheet 31
6. Contact Information 33

Hybrid Inverter User Manual
© 2022 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
Wait for at least 10 minutes before opening the inverter or touching live parts.
Products shall not be disposed as household waste.
CE mark.
DANGER
WARNING
CAUTION
NOTICE

Hybrid Inverter User Manual
© 2022 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 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 Hoymile.
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 present
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 port 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 60V.
• 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℃, touching the surface may
result in burns.
• Do not touch hot surfaces before it cools down.
DANGER

Hybrid Inverter User Manual
© 2022 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, 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 has been disconnected.
• When accessing the internal circuit of inverter, wait for at least 10 minutes.
• 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.
• 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 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
© 2022 Hoymiles Power Electronics Inc. All rights reserved. 05
H
I
J
K
A B C D E F G
* The image shown here is for reference only. The actual product received may differ.
Object Description
A DC Switch
B PV Terminals
C Battery Terminals
D Data Transfer Stick (DTS) Port
E Communication Port
F GRID Connector
G Generator (GEN) Connector
H LED Indicators
I Label
J Emergency Power Supply (EPS) Connector
K PE Terminal
WARNING
• Prior to any electrical connections, keep in mind that the inverter has dual power
supplies. It is mandatory for the qualified personnel to wear personal protective
equipment (PPE) during the electrical work.
2. Introduction
2.1 Product Overview
The HYS-LV Series is a high-performance single-phase hybrid inverter with excellent reliability. 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
system’s performance over time, offering superior energy production.

Hybrid Inverter User Manual
© 2022 Hoymiles Power Electronics Inc. All rights reserved. 06
LED Indicators
Indicator Status Explanation
SOC
RUN PV AC COM FAU LT RUN PV AC COM FAULT
RUN PV AC COM FAU LT RUN PV AC COM FAULT
0~25% 25~50%
50~75% 75~100%
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 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
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 – Communication failed to meter
Blink 2 – Communication failed to BMS
On – BMS and meter communications are OK
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
© 2022 Hoymiles Power Electronics Inc. All rights reserved. 07
2.2 Operating Modes
Main Operation Modes
Self-consumption Mode
In the daytime, solar energy
supports the loads first and
surplus energy is stored in the
battery. When it is fully charged
or reaches the maximum charge
power,the rest energy is fed into
grid (or limited if required).
At night, the battery discharge 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.
00:00
Battery discharging
at night
24:00
Consuming from
grid
PV surplus power selling
Loads
Self consuming (PV power generation)
PV Power
Battery charging
charging
standby standby discharging discharging
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
© 2022 Hoymiles Power Electronics Inc. All rights reserved. 08
Power flow of back-up 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
© 2022 Hoymiles Power Electronics Inc. All rights reserved. 09
2.3 System Diagram
The HYS-LV Series hybrid 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) as well as
for 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.
PV
Battery
Backup Loads
Revenue Meter
Grid
Main Panel
Main Loads
Generator
DC Power
AC Power
Control Line
Communication
Hoymiles Cloud Phone
PC
Smart Meter
• 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,
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