Huawei SUN2000L, SUN2000L-2KTL, SUN2000L-5KTL User Manual

SUN2000L-(2KTL-5KTL)

User Manual

Issue

02

Date

2017-12-12

HUAWEI TECHNOLOGIES CO., LTD.

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No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

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About This Document

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About This Document

Purpose

This document describes the SUN2000L-(2KTL-5KTL) in terms of its installation, electrical connections, commissioning, maintenance, and troubleshooting. SUN2000L-(2KTL-5KTL) is abbreviated as SUN2000L. Before installing and operating the SUN2000L, ensure that you are familiar with the features, functions, and safety precautions provided in this document.

Intended Audience

This document is intended for:



Installers



Users

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol

Description

Indicates an imminently hazardous situation which, if not avoided, will result in serious injury or death.

Indicates a potentially hazardous situation which, if not avoided, could result in serious injury or death.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal injury.

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Symbol

Description

Calls attention to important information, best practices and tips.

NOTE is used to address information not related to personal injury, equipment damage, or environment deterioration.

Change History

Changes between document issues are cumulative. The latest document issue contains all updates made in previous issues.

Issue 02 (2017-12-12)



Updated the networking application diagram.



Updated the battery power-on sequence.



Upgraded the FusionHome app to 2.1.11.201.

Issue 01 (2017-09-27)

This issue is used for first office application (FOA).

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Contents

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Contents

About This Document .................................................................................................................... ii

1 Safety Precautions ......................................................................................................................... 1

2 Product Overview ......................................................................................................................... 5

2.1 Product Introduction ..................................................................................................................................................... 5

2.2 Appearance ................................................................................................................................................................... 7

2.3 Label Description ........................................................................................................................................................ 11

2.4 Working Principles...................................................................................................................................................... 14

3 Storage ........................................................................................................................................... 17

4 System Installation ..................................................................................................................... 18

4.1 Checking Before Installation ...................................................................................................................................... 18

4.2 Tools and Instruments ................................................................................................................................................. 19

4.3 Determining the Installation Position ......................................................................................................................... 20

4.4 Installing the Mounting Bracket ................................................................................................................................. 24

4.4.1 Wall-Mounted Installation ....................................................................................................................................... 25

4.4.2 Support-mounted Installation .................................................................................................................................. 27

4.5 Installing the SUN2000L ............................................................................................................................................ 29

4.6 Installing the WiFi Antenna ........................................................................................................................................ 33

5 Electrical Connections ................................................................................................................ 34

5.1 Preparing Cables ......................................................................................................................................................... 35

5.2 Installing the PE Cable ............................................................................................................................................... 38

5.3 Installing the AC Output Power Cable ........................................................................................................................ 39

5.4 Installing the DC Input Power Cable .......................................................................................................................... 44

5.5 Installing the Battery Cable ........................................................................................................................................ 49

5.6 Installing the Signal Cable .......................................................................................................................................... 51

6 System Commissioning ............................................................................................................. 56

6.1 Checking Before Power-On ........................................................................................................................................ 56

6.2 Powering On the System............................................................................................................................................. 57

6.3 Powering Off the System ............................................................................................................................................ 59

7 Operations on the Local FusionHome App ........................................................................... 60

7.1 App Overview ............................................................................................................................................................. 60

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7.2 Downloading and Installing the App .......................................................................................................................... 62

7.3 Connecting to a SUN2000L WiFi Network ................................................................................................................ 62

7.4 App Operations by the Installer .................................................................................................................................. 66

7.4.1 Logging In to the App .............................................................................................................................................. 66

7.4.2 Querying the SUN2000L Information ..................................................................................................................... 69

7.4.3 Maintaining the SUN2000L ..................................................................................................................................... 72

7.4.3.1 Adding/Deleting Devices ...................................................................................................................................... 73

7.4.3.2 Upgrading the Device ........................................................................................................................................... 74

7.4.3.3 Energy Control ...................................................................................................................................................... 76

7.4.3.3.1 Grid-tied Point Control ...................................................................................................................................... 77

7.4.3.3.2 Energy Storage Control ...................................................................................................................................... 78

7.4.3.4 IPS Check (Only for Italy CEI0-21 Grid Code).................................................................................................... 81

7.4.3.5 Starting or Shutting Down the SUN2000L ........................................................................................................... 83

7.4.3.6 Restoring Factory Defaults ................................................................................................................................... 84

7.4.3.7 Clearing Data ........................................................................................................................................................ 84

7.4.3.8 Adjusting Total Energy Yield ................................................................................................................................ 85

7.4.3.9 Restarting the SUN2000L ..................................................................................................................................... 86

7.4.4 Quick Setting ........................................................................................................................................................... 87

7.4.5 Setting Grid-Connection Parameters ....................................................................................................................... 90

7.4.5.1 Setting Grid Parameters ................................................................................................................................ ........ 91

7.4.5.2 Setting Protection Parameters ............................................................................................................................... 93

7.4.5.3 Feature Parameters ................................................................................................................................................ 95

7.4.5.4 Adjusting Power .................................................................................................................................................. 101

7.4.5.5 Time setting ........................................................................................................................................................ 103

7.4.6 Comm Config ........................................................................................................................................................ 105

7.4.7 Managing Logs ...................................................................................................................................................... 112

7.4.8 Menu ...................................................................................................................................................................... 113

7.4.8.1 Changing the Password ................................................................................................ ....................................... 113

7.4.8.2 About .................................................................................................................................................................. 114

7.5 App Operations by the User ...................................................................................................................................... 115

7.5.1 Logging In to the App ............................................................................................................................................ 115

7.5.2 Querying the Device Status ................................................................................................................................... 116

7.5.3 Querying Alarms .................................................................................................................................................... 117

7.5.4 Querying Power Curves ......................................................................................................................................... 118

7.5.5 Querying Energy Yields ......................................................................................................................................... 119

7.5.6 Settings .................................................................................................................................................................. 120

7.5.7 About ..................................................................................................................................................................... 123

7.6 Troubleshooting ........................................................................................................................................................ 124

8 System Maintenance................................................................................................................. 125

8.1 Routine Maintenance ................................................................................................................................................ 125

8.2 Troubleshooting ........................................................................................................................................................ 126

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9 Handling the SUN2000L .......................................................................................................... 133

9.1 Removing the SUN2000L ........................................................................................................................................ 133

9.2 Packing the SUN2000L ............................................................................................................................................ 133

9.3 Disposing of the SUN2000L................................................................................................ ..................................... 133

10 Technical Specifications ........................................................................................................ 134

A Grid Codes................................................................................................................................. 138

B Acronyms and Abbreviations ................................................................................................ 143

SUN2000L-(2KTL-5KTL) User Manual

1 Safety Precautions

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1 Safety Precautions

General Safety



Before performing operations, read through this manual and follow all the precautions to prevent accidents. The "DANGER", "WARNING", "CAUTION", and "NOTICE" marks in this document do not represent all the safety instructions. They are only supplements to the safety instructions.



Only certified electricians are allowed to install, connect cables for, commission, maintain, and troubleshoot Huawei products, and they must understand basic safety precautions to avoid hazards.

When operating Huawei equipment, in addition to following the general precautions in this document, follow the specific safety instructions given by Huawei. Huawei will not be liable for any consequence caused by the violation of the safety operation regulations and design, production, and usage standards.

Disclaimer

Huawei shall not be liable for any consequence caused by any of the following events:



Transportation damage



The storage conditions do not meet the requirements specified in this document.



Incorrect storage, installation, or use



Installation or use by unqualified personnel



Failure to obey the operation instructions and safety precautions in this document



Operation in extreme environments which are not covered in this document



Operation beyond specified ranges.



Unauthorized modifications to the product or software code or removal of the product



Device damage due to force majeure (such as lightning, earthquake, fire, and storm)



The warranty expires and the warranty service is not extended.



Installation or use in environments which are not specified in related international standards

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Personnel Requirements

Only certified electricians are allowed to install, connect cables for, commission, maintain, troubleshoot, and replace the SUN2000L.



Operation personnel should receive professional training.



Operation personnel should read through this document and follow all the precautions.



Operation personnel should be familiar with the safety specifications about the electrical system.



Operation personnel should understand the composition and working principles of the grid-tied PV system and local regulations.



Operation personnel must wear proper personal protective equipment (PPE).

Protect Labels



Do not scrawl or damage any labels on the SUN2000L enclosure because these labels contain important information about safe operation.



Do not scrawl or damage the nameplate on the SUN2000L enclosure because it contains important product information.

Installation

Never operate the SUN2000L under power during installation.



Ensure that the SUN2000L is not connected to a power supply or powered on before finishing installation.



To allow proper heat dissipation and installation, maintain appropriate clearances between the SUN2000L and other objects, as shown in Figure 1-1. If you have any questions about the clearances, consult local technical support engineers.

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Figure 1-1 Installation space



Ensure that the SUN2000L is installed in a well-ventilated environment.



Ensure that the SUN2000L heat sinks are free from blockage.



Do not open the front panel of the SUN2000L.



Do not remove the terminals and ports at the bottom of the SUN2000L.

Electrical Connections

Before connecting cables, ensure that the SUN2000L is secured in position and not damaged in any way. Otherwise, electric shocks or fire may occur.



Ensure that all electrical connections comply with local electrical standards.



Obtain approval from the local utility company before using the SUN2000L to generate electricity in grid-tied mode.



Ensure that the cables used in a grid-tied PV system are properly connected and insulated and meet all specification requirements.

Operation

High voltage may cause an electric shock, which results in serious injury, death, or serious property damage from the SUN2000L in operation. Strictly comply with the safety precautions in this document and associated documents when operating the SUN2000L.

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

When the SUN2000L is powered on for the first time, only certified electricians are allowed to perform quick setting. Incorrect settings may affect the normal SUN2000L operation and cause the SUN2000L to conflict with the country certification.



When the SUN2000L is operating, do not disconnect under load.



Do not touch an energized SUN2000L because the heat sink has a high temperature.



Follow local laws and regulations when operating the equipment.

Maintenance and Replacement

High voltage may cause an electric shock, which results in serious injury, death, or serious property damage from the SUN2000L in operation. Prior to maintenance, power off the SUN2000L and strictly comply with the safety precautions in this document and associated documents to operate the SUN2000L.



Maintain the SUN2000L with sufficient knowledge of this document, proper tools, and testing equipment.



Before performing maintenance tasks, power off the SUN2000L and wait at least 5 minutes.



Temporary warning signs or fences must be placed to prevent unauthorized people from entering the site.



If the SUN2000L is faulty, contact your supplier.



The SUN2000L can be powered on only after all faults are rectified. Failing to do so may escalate faults or damage the device.



Observe ESD precautions and wear ESD gloves during maintenance.

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2 Product Overview

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2 Product Overview

2.1 Product Introduction

Function

The SUN2000L is a single-phase grid-tied PV string inverter that converts the DC power generated by PV strings into AC power and feeds the electricity into the power grid.

Models

This document involves the following product models:



SUN2000L-2KTL



SUN2000L-3KTL



SUN2000L-3.68KTL



SUN2000L-4KTL



SUN2000L-4.6KTL



SUN2000L-5KTL

Figure 2-1 Designation explanation of the SUN2000L-5KTL

Table 2-1 Designation explanation of the SUN2000L-5KTL

No.

Meaning

Description

1

Series name

SUN2000L: single-phase grid-tied PV string inverter

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No.

Meaning

Description

2

Power level



2K: The power level is 2K.



3K: The power level is 3K.



3.68K: The power level is 3.68K.



4K: The power level is 4K.



4.6K: The power level is 4.6K.



5K: The power level is 5K.

3

Topology

TL: transformerless

Networking Application

The SUN2000L applies to a residential rooftop grid-tied system. Typically, a grid-tied system consists of the PV string, grid-tied inverter, AC switch, and power distribution unit.

Figure 2-2 Network diagram (optional in dashed boxes)

indicates a power cable, indicates the power flow direction, and indicates a signal

cable.

(A) PV string

(B) DC switch

(C) SUN2000L

(D) AC switch

(E) Residential power distribution unit

(F) Energy meter

(G) Residential power meter

(H) Power grid

(I) Battery

(J) Battery switch

(K) Alarm beacon

(L) Residential load

Supported Power Grid

Power grid types supported by the SUN2000L include TN-S, TN-C, TN-C-S, and TT. In a TT power grid, the N-PE voltage should be lower than 30 V.

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Figure 2-3 Power grid types

2.2 Appearance

Front View

Figure 2-4 Front view

(1) LED 1

(2) LED 2

(3) LED 3

(4) Front panel

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Table 2-2 LED description

Type

Status

Meaning

Running indication

LED 1

LED 2

N/A

Steady green

The SUN2000L is exporting power to the power grid.

Blinking green at long intervals (on for 1s and then off for 1s)

Off

The DC is on and the AC is off.

Off

Blinking green at long intervals (on for 1s and then off for 1s)

The DC is off and the AC is on.

Blinking green at long intervals (on for 1s and then off for 1s)

The DC is on, the AC is on, and the SUN2000L is not exporting power to the power grid.

Off

Both the DC and AC are off, or the SUN2000L is in Low Power Consumption mode. Low Power Consumption mode means that the monitoring system of the SUN2000L hibernates.

Steady red

The SUN2000L is faulty.

Communicatio n indication

LED 3

N/A

Blinking green at short intervals (on for 0.2s and then off for 0.2s)

Communicating (Communicating refers to that the communication with the upper-level management unit is in progress. However, if a mobile phone accesses the SUN2000L, the LED indicates the "mobile phone access status: blinking green at long intervals" first.)

Blinking green at long intervals (on for 1s and then off for 1s)

The mobile phone has connected to the SUN2000L.

Off

Others

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Rear View

Figure 2-5 Rear view

(1) Mounting plate

(2) Mounting bracket

(3) Heat sink

Bottom View

Figure 2-6 Bottom view

No.

Component

Silk Screen

1

DC switch

DC SWITCH

2

DC input terminal

PV+/PV–

3

Battery terminal

BAT+/BAT–

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No.

Component

Silk Screen

4

COM port

COM

5

AC output port

AC

6

Ventilation valve

N/A

7

Antenna port

ANT

8

Alarm port

ALARM

9

Ground point

N/A

Dimensions

Figure 2-7 Enclosure dimensions

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Figure 2-8 Mounting bracket dimensions

2.3 Label Description

Symbols

Table 2-3 Label description

Symbol

Name

Meaning

Burn warning

Do not touch a running SUN2000L because the shell is hot when the SUN2000L is running.

Delay discharge



High voltage exists after the SUN2000L is powered on. Only qualified and trained electrical technicians are allowed to perform operations on the SUN2000L.



Residual voltage exists after the SUN2000L is powered off. It takes 5 minutes for the SUN2000L to discharge to the safe voltage.

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Symbol

Name

Meaning

Refer to documentation

Reminds operators to refer to the documents shipped with the SUN2000L.

Grounding

Indicates the position for connecting the protective earthing (PE) cable.

Operation warning

Do not remove the connector or antenna when the SUN2000L is running.

Indicator status description label

Describes the indicator status.

SUN2000L serial number (SN) label

Indicates the SUN2000L SN.

SUN2000L MAC address label

Indicates the MAC address.

QR code for SUN2000L WiFi connection

Scan the QR code to connect to Huawei SUN2000L WiFi network (Android) or obtain the WiFi password (iOS).

The labels are for reference only.

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Nameplate

Figure 2-9 Nameplate

(1) Trademark and product model

(2) Important technical specifications

(3) Compliance symbols

(4) Company name and country of manufacture

The nameplate figure is for reference only.

Table 2-4 Compliance symbols

Symbol

Name

Meaning

Environment friendly use period (EFUP) mark

The product does not pollute the environment during the specified period.

EU waste electrical and electronic equipment (WEEE) mark

Do not dispose of the product as household garbage.

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2.4 Working Principles

Conceptual Diagram

The SUN2000L receives two inputs from the two PV strings. Two MPPT circuits are configured inside the SUN2000L. Each circuit tracks the maximum power point of one PV string respectively.

The SUN2000L reserves a battery port to connect to batteries which are used to store the surplus power produced by PV strings and not required by residential loads. The power stored in batteries can be exported to the power grid based on the load condition to meet peak power consumption requirements and maximize the benefits.

Figure 2-10 Conceptual diagram

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Working Modes

Figure 2-11 Working modes

Table 2-5 Working mode description

Working Mode

Description

Standby

The SUN2000L enters Standby mode when the external environment does not meet the requirements for starting the SUN2000L. In Standby mode:



The SUN2000L continuously checks its status and enters Operating mode once the operating requirements are met.



The SUN2000L enters Shutdown mode after detecting a shutdown command or a fault after startup.

Operating

In Operating mode:



The SUN2000L converts DC power from PV strings into AC power and feeds the energy to the power grid.



The SUN2000L tracks the maximum power point to maximize the PV string output.



The SUN2000L enters Shutdown mode after detecting a fault or a shutdown command, and enters Standby mode after detecting that the PV string output power is not suitable for connecting to the power grid and producing power.

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Working Mode

Description

Shutdown



In Standby or Operating mode, the SUN2000L enters Shutdown mode after detecting a fault or shutdown command.



In Shutdown mode, the SUN2000L enters Standby mode after detecting a startup command or that the fault is rectified.

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3 Storage

The following requirements should be met when the SUN2000L needs to be stored prior to installation:



Do not unpack the SUN2000L.



Keep the storage temperature at –40°C to +70°C and the humidity at 5%–95% RH.



The SUN2000L should be stored in a clean and dry place and be protected from dust and water vapor corrosion.



A maximum of 10 SUN2000Ls can be stacked. To avoid personal injury or device damage, stack SUN2000Ls with caution to prevent them from falling over.



Regular inspection is required during the storage. Replace the packing materials when necessary.



After long-term storage, an inspection and test conducted by qualified persons are necessary before the SUN2000L is put into use.

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4 System Installation

4.1 Checking Before Installation

Outer Packing Materials

Before unpacking the SUN2000L, check the outer packing materials for damage, such as holes and cracks, and check the SUN2000L model. If any damage is found or the SUN2000L model is not what you requested, do not unpack the package and contact your supplier as soon as possible.

You are advised to remove the packing materials within 24 hours before installing the SUN2000L.

Package Contents

After unpacking the SUN2000L, check that the contents are intact and complete. If any damage is found or any component is missing, contact your supplier.

For details about the number of contents, see the Packing List in the packing case.

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4.2 Tools and Instruments

Category

Tools and Instruments

Measuring tape

Bubble or digital level

Hydraulic pliers

Heat shrink tubing

Heat gun

N/A

PPE

Safety gloves

Safety goggles

Anti-dust respirator

Safety shoes

N/A

4.3 Determining the Installation Position

Basic Requirements



The SUN2000L is protected to IP65 and can be installed indoors or outdoors.



Do not install the SUN2000L in a place where a person can be easy to come into contact with its enclosure and heat sinks, because these parts are extremely hot during operation.



Do not install the SUN2000L in areas with flammable or explosive materials.



Do not install the SUN2000L at a place within children's reach.



The SUN2000L will be corroded in salt areas, and the salt corrosion may cause fire. Do not install the SUN2000L outdoors in salt areas. A salt area refers to the region within 500 meters from the coast or prone to sea breeze. The regions prone to sea breeze vary depending on weather conditions (such as typhoons and monsoons) or terrains (such as dams and hills).

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Installation Environment Requirements



The SUN2000L must be installed in a well-ventilated environment to ensure good heat dissipation.



When installed under direct sunlight, performance de-rate may be initiated due to additional temperature rise.



Install the SUN2000L in a sheltered place or install an awning over the SUN2000L.

Mounting Structure Requirements



The mounting structure where the SUN2000L is installed must be fireproof.



Do not install the SUN2000L on flammable building materials.



Ensure that the installation surface is solid enough to bear the weight load.



In residential areas, do not install the SUN2000L on drywalls or walls made of similar materials which have a weak sound insulation performance because the noise generated by the SUN2000L is noticeable.

Installation Angle Requirements

The SUN2000L can be wall-mounted or pole-mounted. The installation angle requirements are as follows:



Install the SUN2000L vertically or at a maximum back tilted angle of 15 degrees to facilitate heat dissipation.



Do not install the SUN2000L at forward tilted, excessive back tilted, side tilted, horizontal, or upside down positions.

Figure 4-1 Installation angle

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Installation Space Requirements



Reserve enough clearance around the SUN2000L to ensure sufficient space for installation and heat dissipation.

Figure 4-2 Installation space requirements



When installing multiple SUN2000Ls, install them in horizontal mode if sufficient space is available and install them in triangle mode if no sufficient space is available. Stacked installation is not recommended.

Figure 4-3 Horizontal installation mode (recommended)

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Figure 4-4 Triangle installation mode (recommended)

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Figure 4-5 Stacked installation mode (not recommended)

4.4 Installing the Mounting Bracket

Fixing holes can be used in three combinations. Select a hole combination based on site requirements. Combination A is preferred.

Figure 4-6 Hole combinations

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Figure 4-7 Hole distances

4.4.1 Wall-Mounted Installation

Procedure

Step 1 Determine the positions for drilling holes using the mounting bracket. Level the positions of

mounting holes using a bubble or digital level, and mark the positions with a marker.

Figure 4-8 Determining hole positions

Step 2 Install expansion bolts.

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Avoid drilling holes in the utility pipes and/or cables attached to back of the wall.

If the length or number of M8x80 expansion bolts supplied with the SUN2000L is not enough, prepare M8 stainless steel expansion anchor bolts.

Figure 4-9 Expansion bolt composition

(1) Bolt

(2) Nut

(3) Spring washer

(4) Flat washer

(5) Expansion sleeve



To prevent dust inhalation or contact with eyes, wear safety goggles and an anti-dust respirator when drilling holes.



Clean up any dust in and around the holes using a vacuum cleaner and measure the distance between holes. If the holes are inaccurately positioned, drill new set of the holes.



Level the head of the expansion sleeve with the concrete wall after removing the bolt, spring washer, and flat washer. Otherwise, the mounting bracket will not be securely installed on the concrete wall.

Figure 4-10 Installing an expansion bolt

Step 3 Secure the mounting bracket.

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Figure 4-11 Securing a mounting bracket

----End

4.4.2 Support-mounted Installation

Prerequisites

Prepare M8 stainless bolt assemblies (including flat washers, spring washers, and M8 bolts) with appropriate lengths as well as matched flat washers and nuts based on the support specifications.

Procedure

Step 1 Determine the positions for drilling holes using the mounting bracket. Level the positions of

mounting holes using a bubble or digital level, and mark the positions with a marker.

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Figure 4-12 Determining hole positions

Step 2 Drill holes using a hammer drill.

You are advised to apply anti-rust paint on the hole positions for protection.

Figure 4-13 Drilling holes

Step 3 Secure the mounting bracket.

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Figure 4-14 Securing a mounting bracket

----End

4.5 Installing the SUN2000L

Procedure

Step 1 Hold the handles on both sides of the SUN2000L, lift the SUN2000L from the packing case,

and move it to the installation position.

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

To prevent device damage and personal injury, keep balance when moving the SUN2000L.



Do not use the wiring terminals and ports at the bottom to support any weight of the SUN2000L.



When you need to temporally place the SUN2000L on the ground, use foam, paper or other protection material to prevent damage to its cover.

Figure 4-15 Moving a SUN2000L

Step 2 Install the SUN2000L on the mounting bracket and align the SUN2000L enclosure with the

mounting bracket.

If the bottom of the mounting plate does not snap into place, push the SUN2000L from the front until the bottom of the mounting plate snaps into the mounting bracket.

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Figure 4-16 Mounting a SUN2000L

Step 3 Tighten screw assemblies.

Fixing holes can be used in three combinations. Select a hole combination based on site requirements. Combination A is preferred.

Figure 4-17 Fixing holes

Combination A: holes 2 and 3

Combination B: holes 1 and 3

Combination C: holes 1 and 4

Combination D: holes 2 and 4

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Figure 4-18 Tightening screw assemblies

Step 4 (Optional) Install an anti-theft lock.

The function of an anti-theft lock is to secure the SUN2000L to the mounting bracket and protect it from stealing.



Prepare an anti-theft lock suitable for the lock hole diameter (Ф8 mm) by yourself.



Keep the key to the anti-theft lock safe.

Figure 4-19 Installing an anti-theft lock

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----End

4.6 Installing the WiFi Antenna

Procedure

Step 1 Remove the watertight cap from the ANT port. Step 2 Remove the release paper of the double-sided tape and attach the washer to the enclosure. Step 3 Install the WiFi antenna.

Ensure that the WiFi antenna is installed securely.

Figure 4-20 Installing a WiFi antenna

----End

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5 Electrical Connections

Precautions

Before connecting cables, ensure that the DC switch on the SUN2000L and all the switches connecting to the SUN2000L are OFF. Otherwise, the high voltage of the SUN2000L may result in electric shocks.



The equipment damage caused by incorrect cable connections is beyond the warranty scope.



Only certified electricians are allowed to connect cables.



Operation personnel must wear proper PPE all the time when connecting cables.

The cable colors shown in the electrical connection diagrams provided in this chapter are for reference only. Select cables in accordance with local cable specifications (green-and-yellow cables are only used for PE).

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5.1 Preparing Cables

Figure 5-1 Network diagram (optional in dashed boxes)

indicates a power cable, indicates the power flow direction, and indicates a signal

cable.

(A) PV string

(B) DC switch

(C) SUN2000L

(D) AC switch

(E) Residential power distribution unit

(F) Energy meter

(G) Residential power meter

(H) Power grid

(I) Battery

(J) Battery switch

(K) Alarm beacon

(L) Residential load

Figure 5-2 SUN2000L cable connections (optional in dashed boxes)

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Table 5-1 Component description

No.

Component

Description

Source

A

PV string



A PV string is composed of the PV modules connected in series and works with an optimizer.



The SUN2000L supports the input from two PV strings.

Prepared by the customer

B

DC switch

Recommended: a DC circuit breaker with a rated voltage greater than or equal to 600 V DC and a rated current of 20 A

Prepared by the customer

C

Battery

The batteries that can connect to the SUN2000L are LG-RESU (LG RESU7H and RESU10H).

Prepared by the customer

D

Battery switch

Recommended: a DC circuit breaker with a rated voltage greater than or equal to 600 V DC and a rated current of 20 A

Prepared by the customer

E

Energy meter

The energy meters that can connect to the SUN2000L are CHINT-DDSU666, CCS-WNC-3Y-400-MB, Gavazzi-EM340DINAV23XS1X, and Gavazzi-EM111DINAV81XS1X.

Prepared by the customer

F

Alarm beacon

The rated voltage is 12 V and the power is less than or equal to 3 W.

Prepared by the customer

G

AC switch

Recommended: a single-phase AC circuit breaker with a rated voltage greater than or equal to 250 V AC and a rated current of



16 A (SUN2000L-2KTL)



25 A (SUN2000L-3KTL and SUN2000L-3.68KTL)



32 A (SUN2000L-4KTL, SUN2000L-4.6KTL, and SUN2000L-5KTL)

Prepared by the customer

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

The SUN2000L is embedded with a residual current monitoring unit (RCMU). Only a single-phase circuit breaker or a similar AC load breaking device is required to function as the external AC switch (shown by G in Figure 5-2) to ensure that the SUN2000L can be safely disconnected from the power grid.



If the external AC switch can perform earth leakage protection, the rated leakage action current should be greater than or equal to 100 mA.



If multiple SUN2000Ls connect to the general residual current device (RCD) through their respective external AC switches, the rated leakage action current of the general RCD should be greater than or equal to the number of SUN2000Ls multiplied by 100 mA.



A knife switch cannot be used as an AC switch.

Table 5-2 Cable description

No.

Cable

Type

Conductor Cross-sectional Area Range

Outer Diameter

Source

1

DC input power cable

Standard PV cable in the industry (recommended model: PV1-F)

4–6 mm2

4.5–7.8 mm

Prepared by the customer

2

Battery cable

Standard PV cable in the industry (recommended model: PV1-F)

4–6 mm2

4.5–7.8 mm

Prepared by the customer

3

Signal cable

Four-core outdoor shielded twisted pair

0.25–1 mm2

4–11 mm

Prepared by the customer

4

AC output power cable



Not using the PE equipotential point at the AC output port: two-core (L and N) outdoor copper cable



Using the PE equipotential point at the AC output port: three-core (L, N, and PE) outdoor copper cable

4–6 mm2

10–21 mm

Prepared by the customer

5

PE cable

Single-core outdoor copper cable with an M6 OT terminal

4–10 mm2

N/A

Prepared by the customer

The PE point at the AC output port is used only as a PE equipotential point, and cannot substitute for the PE point on the enclosure.

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5.2 Installing the PE Cable

Context

Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks will be caused.

Procedure

Step 1 Crimp the OT terminal.



Pay attention not to damage the core wire when stripping a cable.



The cavity formed after the conductor crimp strip of the OT terminal is crimped must wrap the core wires completely. The core wires must contact the OT terminal closely.



Wrap the wire crimping area with heat shrink tubing or PVC insulation tape. The following figure uses heat shrink tubing as an example.



When using the heat gun, protect devices from being scorched.

Figure 5-3 Crimping an OT terminal

(A) Core wire

(B) Insulation layer

(C) Heat shrink tubing

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(D) Hydraulic pliers

(E) Heat gun

Step 2 Connect the PE cable.

Ensure that the PE cable is connected securely.

Figure 5-4 Connecting a PE cable



The PE point at the AC output port is used only as a PE equipotential point, and cannot substitute for the PE point on the enclosure.



To enhance the corrosion resistance of a ground terminal, apply silica gel or paint around the terminal after connecting the ground cable.

----End

5.3 Installing the AC Output Power Cable

Prerequisites

An AC switch must be installed on the AC side of the SUN2000L to ensure that the SUN2000L can be safely disconnected from the power grid.

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Do not connect any load between the SUN2000L and the AC switch.

Context

The SUN2000L can detect the grounding. This function is used to detect whether the SUN2000L is properly grounded before starting the SUN2000L, or to detect whether the PE cable is disconnected when the SUN2000L is working. This function is available only under limited conditions. To ensure the safe operation of the SUN2000L, properly ground the SUN2000L in strict accordance with the connection requirements for PE cables. For certain types of power grids, if an isolation transformer connects to the output side of the SUN2000L, you need to set OFF due to abnormal grounding to Disable (see 7.4.5.3 Feature Parameters for details) after checking that the SUN2000L is properly grounded. Then the SUN2000L can start normally. If you are not sure whether the SUN2000L connects to such a power grid, confirm it with your dealer or Huawei technical support.



According to IEC62109, to ensure the safe operation of the SUN2000L in the case of PE cable damage or disconnection, connect the SUN2000L PE cable according to the requirements described in 5.2 Installing the PE Cable and ensure that the SUN2000L PE cable meets at least one of the following requirements before disabling the grounding detection function.

The SUN2000L PE cable is a copper cable with a cross-sectional area of at least 10 mm2. Use two cables that have the same diameter as the AC output power cable to ground the PE terminal

on the AC connector and the ground screw on the enclosure respectively (see 5.2 Installing the PE

Cable and 5.3 Installing the AC Output Power Cable for details).



Certain countries require an additional PE cable for the SUN2000L. In this case, use two cables that have the same diameter as the AC output power cable to ground the PE terminal on the AC connector and the ground screw on the enclosure respectively (see 5.2 Installing the PE Cable and

5.3 Installing the AC Output Power Cable for details).

Procedure

Step 1 Connect the AC output power cable to the AC connector.

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

Ensure that the cable jacket is inside the connector.



Ensure that the exposed core wire is totally inserted into the cable hole.



Ensure that AC terminations provide firm and solid electrical connections. Failing to do so may cause SUN2000L malfunction and damage to its AC connectors.



Ensure that the cable is not twisted.

Figure 5-5 Assembling an AC connector (three-core wire)

Figure 5-6 Assembling an AC connector (two-core wire)

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

The cable colors shown in figures are for reference only. Select an appropriate cable according to the local standards.



For the core wire installation method and stripped length, see the instructions on the side of the plug insert.

Figure 5-7 Stripped length

Step 2 Connect the AC connector to the AC output port.

Ensure that the AC connector is connected securely.

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Figure 5-8 Securing an AC connector

Step 3 Check the route of the AC output power cable.

Figure 5-9 Cable route

----End

Follow-up Procedure

Before removing the AC connector, ensure that the DC switch at the bottom of the SUN2000L and all the switches connecting to the SUN2000L are OFF.

To remove the AC connector from the SUN2000L, perform the operations in reverse order.

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Figure 5-10 Removing a plug insert

5.4 Installing the DC Input Power Cable

Prerequisites



Before connecting the DC input power cable, ensure that the DC voltage is within the safe range (lower than 60 V DC) and that the DC switch on the SUN2000L is OFF. Failing to do so may result in electric shocks.



When the SUN2000L is operating, it is not allowed to work on DC circuit, such as connecting or disconnecting a PV string or a PV module in a PV string. Failing to do so may cause electric shocks.



If no PV string connects to the DC input terminals, do not remove the watertight cap from the DC input terminals. Otherwise, the SUN2000L will not comply with its Ingress Protection Rating.

Ensure that the following conditions are met. Otherwise, the SUN2000L will be damaged, or even become a fire hazard.

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

The open-circuit voltage of each PV string is always lower than or equal to 600 V DC.



The positive and negative terminals of a PV string connect to corresponding positive and negative DC input terminals of the SUN2000L.



If polarity of the DC input power cable is reversed and the DC switch is ON, do not turn off the DC switch immediately or unplug positive and negative connectors. Wait until the solar irradiance declines at night and the PV string current reduces to below 0.5 A, and then turn off the DC switch and remove the positive and negative connectors. Correct the string polarity before reconnecting the string to the SUN2000L.



Since the output of the PV string connected to the SUN2000L cannot be grounded, ensure that the PV module output is well insulated to ground.



During the installation of PV strings and SUN2000L, the positive or negative terminals of PV strings may be grounded if power cables are not properly installed or routed. In this case, an AC or DC short circuit may occur and damage the SUN2000L. This damage is not covered under any warranty or service agreement.

Context

Figure 5-11 DC input terminals

(1) The first set of DC input terminals

(2) The second set of DC input terminals

Procedure

Step 1 Assemble the black positive and negative connectors.

Use the positive and negative metal terminals and DC connectors supplied with the SUN2000L. Using incompatible positive and negative metal terminals and DC connectors may result in serious consequences. The caused device damage is not covered under any warranty or service agreement.

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

Cables with high rigidity, such as armored cables, are not recommended as DC input power cables, because poor contact may be caused by the bending of the cables.



Before assembling DC input connectors, label the cable polarities correctly to ensure correct cable connections.



After crimping the positive and negative metal terminals, pull the DC input power cables back to ensure that they are connected securely.



Insert the crimped metal terminals of the positive and negative power cables into the appropriate positive and negative connectors. Then pull back the DC input power cables to ensure that they are connected securely.

Figure 5-12 Assembling a DC connector

(A) Positive metal terminal

(B) Negative metal terminal

(C) H4TC0001 crimping tool

(D) Positive connector

(E) Negative connector

(F) H4TW0001 open-end wrench

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Ensure that the core wires can be seen through the hole on the terminal both before and after the positive and negative metal terminals are crimped.

Figure 5-13 Observing core wires through the hole on the terminal

Step 2 Ensure that the DC input voltage of each PV string is within the specified range of the

SUN2000L using a multimeter and check that the polarities of DC input power cables are correct.

Figure 5-14 Measuring the DC input voltage

Before performing Step 3, ensure that the DC switch is OFF.

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Step 3 Insert the positive and negative connectors into corresponding DC input terminals on the

SUN2000L.

After the positive and negative connectors snap into place, pull the DC input power cables back to ensure that they are connected securely.

Figure 5-15 Connecting DC input power cables

If polarity of the DC input power cable is reversed and the DC switch is ON, do not turn off the DC switch immediately or unplug positive and negative connectors. The device may be damaged if you do not follow the instruction. This damage is not covered under any warranty or service agreement. Wait until the solar irradiance declines at night and the PV string current reduces to below 0.5 A, and then turn off the DC switch and remove the positive and negative connectors. Correct the string polarity before reconnecting the string to the SUN2000L.

----End

Follow-up Procedure

Before removing the positive and negative connectors, ensure that the DC switch is OFF.

To remove the positive and negative connectors from the SUN2000L, insert an open-end wrench into the notch and press the wrench with an appropriate force.

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Figure 5-16 Removing a DC connector

5.5 Installing the Battery Cable

Prerequisites



Battery short circuits may cause personal injury. The high transient current generated by a short circuit will release a surge of power and may even cause fire.



Do not connect or disconnect battery cables when the SUN2000L is running. Failing to do so may cause electric shocks.



Before connecting battery cables, ensure that the DC switch on the SUN2000L and all the switches connecting to the SUN2000L are OFF, and the SUN2000L has no residual electricity. Otherwise, the high voltage of the SUN2000L and battery may result in electric shocks.



If no battery connects to the SUN2000L, do not remove the watertight cap from the battery terminal. Otherwise, the SUN2000L will not comply with its Ingress Protection Rating. If a battery connects to the SUN2000L, set aside the watertight cap. Reinstall the watertight cap immediately after removing the connector. The high voltage of the battery terminal may result in electric shocks.

A battery switch can be configured between the SUN2000L and the battery to ensure that the SUN2000L can be safely disconnected from the battery.

Do not connect any load between the SUN2000L and the battery. Ensure that the following conditions are met. Otherwise, the SUN2000L will be damaged, or

even become a fire hazard.

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

The battery open-circuit voltage should always be lower than or equal to 600 V DC.



The battery cable is connected correctly. That is, the positive and negative terminals of the battery connect to the positive battery terminal and negative battery terminal on the SUN2000L respectively.



During the installation of the SUN2000L and battery, the positive or negative terminal of the battery will be short-circuited to ground if power cables are not installed or routed as required. In this case, an AC or DC short circuit may occur and damage the SUN2000L. This damage is not covered under any warranty or service agreement.



The cable between the battery and the SUN2000L should be less than or equal to 10 meters, and within 5 meters is recommended.

Procedure

Step 1 Assemble the blue positive and negative connectors by following the instructions in 5.4

Installing the DC Input Power Cable.



The battery voltage will result in serious injury. Use dedicated insulation tools to connect cables.



Ensure that cables are correctly connected between the battery terminal and the battery switch, and between the battery switch and the SUN2000L battery terminal.

Cables with high rigidity, such as armored cables, are not recommended, because poor contact may be caused by the bending of the cables.

Step 2 Insert the positive and negative connectors into corresponding battery terminals on the

SUN2000L.

After the positive and negative connectors snap into place, pull test to the battery cables is recommended.

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Figure 5-17 Connecting battery cables

----End

5.6 Installing the Signal Cable

Context

When laying out signal cables, separate them from power cables to avoid strong signal interference sources.

Figure 5-18 COM and ALARM ports

The COM port provides two RS485 communications ports and one enable signal port to connect to power collectors, batteries, and so on.

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Table 5-3 COM port pin definitions

No.

Label

Definition

Description

1

485B1

RS485B, RS485 differential signal–

Reserved, can connect to the RS485 signal port on the power collector.

2

485A1

RS485A, RS485 differential signal+

3

485B2

RS485B, RS485 differential signal–

Reserved, can connect to the RS485 signal port and enable signal port on a battery.

4

485A2

RS485A, RS485 differential signal+

5

EN–

Enable signal–

6

EN+

Enable signal+

7

N/A

8

PE

Shielding ground

Connects to the shield layer of the cable.

The ALARM port provides an alarm signal port to connect to an alarm beacon, which reminds the user to handle the Low Insulation Resistance, Abnormal Residual Current, or Faulty Residual Current Sensor alarm. The ALARM port reserves an RS485/12 V signal port.



The alarm beacon should be installed within 2 meters away from the SUN2000L.



The Faulty Residual Current Sensor alarm is the Abnormal Device alarm with a cause ID of 5.

Table 5-4 ALARM port pin definitions

No.

Label

Definition

Description

1

ALARM–

Alarm signal–

Reserved, can connect to the power port on an alarm beacon

2

ALARM+

Alarm signal+

3

485B3

RS485B, RS485 differential signal–

Reserved RS485/12 V signal port, output power of

the 12 V power supply ≤ 3

W

4

485A3

RS485A, RS485 differential signal+

5

12 V–

Negative of the 12 V power supply

6

12 V+

Positive of the 12 V power supply

7

N/A

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No.

Label

Definition

Description

8

PE

Shielding ground

Connects to the shield layer of the cable.

Procedure

Step 1 Connect signal cables to appropriate signal connectors.



The protection layer of the cable is in the connector. Surplus core wires are cut off from the protection layer.



Ensure that the exposed core wire is totally inserted into the cable hole.



Ensure that the signal cables are connected securely.



Ensure that the cable is not twisted.



If a connector needs to connect to only one signal cable, block the unused cable hole on the seal using a cap and tighten the cable gland.



If a connector needs to connect to two signal cables, ensure that the cables have the same outer diameter.

Figure 5-19 Assembling a signal connector (COM port)

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Figure 5-20 Assembling a signal connector (ALARM port)

Step 2 Connect the signal connector to the corresponding port.



Do not confuse the connectors to the COM port and ALARM port.



Ensure that the signal connector is connected securely.

Figure 5-21 Securing a connector (COM port)

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Figure 5-22 Securing a connector (ALARM port)

----End

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6 System Commissioning

6.1 Checking Before Power-On

Table 6-1 Installation checklist

No.

Check Item

Acceptance Criteria

1

SUN2000L installation

The SUN2000L is installed correctly, securely, and reliably.

2

WiFi antenna installation

The WiFi antenna is installed correctly, securely, and reliably.

3

Cable layout

Cables are routed properly as required by the customer.

4

Cable tie

Cable ties are secured evenly and no burr exists.

5

Grounding

The ground cable is connected correctly, securely, and reliably.

6

DC switch

The DC switch and all the switches connecting to the SUN2000L are OFF.

7

Cable connections

The AC output power cable, DC input power cable, battery cable, and signal cable are connected correctly, securely, and reliably.

8

Unused terminals and ports

Unused terminals and ports are locked by watertight caps.

9

Installation environment

The installation space is proper, and the installation environment is clean and tidy, without foreign matter.

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6.2 Powering On the System

Prerequisites

Before turning on the AC switch between the SUN2000L and the power grid, check that the AC voltage on the power grid side of the AC switch is within the specified range.



If the DC is on and the AC is off, the SUN2000L reports a Grid Failure alarm. The SUN2000L starts normally only after the fault is rectified.



If the AC is on and the battery is off, the SUN2000L reports a Battery Abnormal alarm.



If the SUN2000L is connected to the battery, after turning on the AC switch: If the DC switch is turned on within 1 minute, the SUN2000L will run properly in grid-tied mode. If the DC switch is not turned on within 1 minute, the SUN2000L will enter the nighttime

grid-tied mode. Then, after the DC switch is turned on, the SUN2000L will shut down and then restart to run in grid-tied mode.

Procedure

Step 1 If a battery connects to the battery port, turn off the battery Auxiliary Power ON/OFF switch,

and then turn off the battery Circuit Breaker switch.

Step 2 Turn on the AC switch between the SUN2000L and the power grid. Step 3 Turn on the DC switch between the PV string and the SUN2000L if there is any. Step 4 Turn on the DC switch at the bottom of the SUN2000L. Step 5 Set the SUN2000L parameters on the app. For details, see 7 Operations on the Local

FusionHome App.

Step 6 (Optional) Measure the temperatures at DC terminals and battery terminals using a point-test

thermometer. Under normal operation conditions of the SUN2000L, the temperature rise at DC terminals

should remain below 30°C at all time.

Step 7 Observe the LEDs to check the SUN2000L operating status.

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Table 6-2 LED description

Type

Status

Meaning

Running indication

LED 1

LED 2

N/A

Steady green

The SUN2000L is exporting power to the power grid.

Blinking green at long intervals (on for 1s and then off for 1s)

Off

The DC is on and the AC is off.

Off

Blinking green at long intervals (on for 1s and then off for 1s)

The DC is off and the AC is on.

Blinking green at long intervals (on for 1s and then off for 1s)

The DC is on, the AC is on, and the SUN2000L is not exporting power to the power grid.

Off

Both the DC and AC are off, or the SUN2000L is in Low Power Consumption mode. Low Power Consumption mode means that the monitoring system of the SUN2000L hibernates.

Steady red

The SUN2000L is faulty.

Communicatio n indication

LED 3

N/A

Blinking green at short intervals (on for 0.2s and then off for 0.2s)

Communicating (Communicating refers to that the communication with the upper-level management unit is in progress. However, if a mobile phone accesses the SUN2000L, the LED indicates the "mobile phone access status: blinking green at long intervals" first.)

Blinking green at long intervals (on for 1s and then off for 1s)

The mobile phone has connected to the SUN2000L.

Off

Others

----End

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6.3 Powering Off the System

Context



After the SUN2000L powers off, the remaining electricity and heat may still cause electric shocks and body burns. Therefore, put on protective gloves and begin servicing the SUN2000L 5 minutes after the power-off.



If the SUN2000L is connected to the battery, ensure that a shutdown command is sent from the app. Power off the system after the SUN2000L has shut down. If no shutdown command is sent from the app, the SUN2000L will shut down after the power grid is powered off. Then, the SUN2000L will wait for 1 minute and restart (not grid-tied) to charge the battery, which poses the risk of turning off the DC switch with power.

Procedure

Step 1 Send a shutdown command from the app. Perform operations by referring to 7.4.3.5 Starting

or Shutting Down the SUN2000L if you log in as installer; perform operations by referring to

7.5.6 Settings if you log in as user.

Step 2 Turn off the AC switch between the SUN2000L and the power grid. Step 3 Turn off the DC switch at the bottom of the SUN2000L. Step 4 Turn off the DC switch between the PV string and the SUN2000L if there is any. Step 5 If a battery connects to the battery port, turn off the battery switch.

----End

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7 Operations on the Local FusionHome App

7.1 App Overview

Function

The local FusionHome app (app for short) is a mobile phone app that locally communicates with the SUN2000L over WiFi to allow for querying alarms, configuring parameters, and performing routine maintenance, and commissioning.

Connection Method

After the DC or AC side of the SUN2000L is energized, the app can connect to the SUN2000L in either of the following ways:



Method 1: The mobile phone connects to the SUN2000L directly.

Figure 7-1 Mobile phone connecting to the SUN2000L directly



Method 2: The mobile phone connects to the SUN2000L over a router. Do not use this method for the first login and ensure that the SUN2000L has connected to the router.

Figure 7-2 Mobile phone connecting to the SUN2000L over a router

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

Mobile phone operating system: Android 4.4 or later, iOS 8.0 or later.



Recommended brands: Huawei, Samsung, and iPhone



The mobile phone supports the access to the Internet over a web browser.



The mobile phone supports WiFi.



The router supports WiFi (IEEE 802.11 b/g/n, 2.4 GHz) and the WiFi signal reaches the SUN2000L.

Disclaimer

The app screen snapshots provided in this document correspond to FusionHome 2.1.11.201. The figures are for reference only.

User Operation Permissions

The app users are classified into the installer and user.

Figure 7-3 Operation permissions of the installer

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Figure 7-4 Operation permissions of the user

7.2 Downloading and Installing the App

Search for FusionHome from the following app stores, download the installation package, and install the FusionHome app by following the instructions.



Google Play (Android)



Huawei App Store (Android)



App Store (iOS)

After the app is installed, the FusionHome icon is displayed on the home screen.

7.3 Connecting to a SUN2000L WiFi Network

Prerequisites



The DC or AC side of the SUN2000L has been energized.



The WiFi function is enabled on the mobile phone.



When connecting the SUN2000L to the app directly, keep the mobile phone within 5 meters of the SUN2000L with no barrier in between to ensure the communication quality between them.



When connecting the SUN2000L to the app over a router, ensure that the mobile phone and SUN2000L are in the WiFi coverage of the router and the SUN2000L has connected to the router.

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The way of connecting the SUN2000L to the router is as follows:



The installer taps Quick setting (see 7.4.4 Quick Setting for details) or Comm config (see

7.4.6 Comm Config for details).



The user taps Set (see 7.5.6 Settings for details).



If the WiFi signal is weak, you will be prompted to try again multiple times. Follow the instructions.



To exit the app, tap Exit on the Inverter list screen.

Procedure on the Android System

The app allows for connecting to the SUN2000L in the following two ways. Select either way based on site requirements. After the connection succeeds, the Inverter list screen is displayed. If connecting to the SUN2000L or router WiFi network from the app fails, try to connect to the WiFi network from your mobile phone. To connect to the router over WiFi from the mobile phone system, ensure that you have logged out of the app.



Method 1: The mobile phone connects to the SUN2000L directly. Run the app, tap the WiFi name corresponding to the SUN2000L, and enter the WiFi

password to connect to the WiFi network. Use the initial password Changeme upon first login. To ensure account security, change the password immediately after login.

The name of the connected SUN2000L WiFi network is represented by SUN2000L-its serial number (SN). The SN is available on the label attached to the side of the SUN2000L.

Figure 7-5 Mobile phone connecting to the SUN2000L directly

If you log in for the first time and the initial SUN2000L WiFi password is not changed, you can scan the WiFi login QR code on the side of the SUN2000L to connect to the SUN2000L WiFi network.

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Figure 7-6 Scanning the QR code to connect the mobile phone to the SUN2000L directly



Method 2: The mobile phone connects to the SUN2000L over a router. Do not use this method for the first login and ensure that the SUN2000L has connected to the router.

Run the app. If the SUN2000L WiFi network has connected to the router, tap the WiFi name corresponding to the router for connection. After the connection succeeds, the Inverter list screen displays all the Huawei SUN2000Ls that have connected to the router.

Figure 7-7 Mobile phone connecting to the SUN2000L over a router

----End

Procedure on the iOS System

The app allows for connecting to the SUN2000L in the following two ways. Select either way based on site requirements. After the connection succeeds, the Inverter list screen is displayed.



Method 1: The mobile phone connects to the SUN2000L directly. a. Choose Settings > WLAN on your mobile phone and tap the WiFi name

corresponding to the SUN2000L.

The name of the connected SUN2000L WiFi network is represented by SUN2000L-its serial number (SN). The SN is available on the label attached to the side of the SUN2000L.

b. Enter the SUN2000L WiFi password for connection. Use the initial password

Changeme upon first login. To ensure account security, change the password immediately after login.

If you log in for the first time and the initial SUN2000L WiFi password is not changed, you can run the app, tap Scan, and scan the WiFi login QR code on the side of the SUN2000L to obtain the WiFi login password.

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c. Run the app. After the connection succeeds, the Inverter list screen is displayed.

Figure 7-8 Mobile phone connecting to the SUN2000L directly



Method 2: The mobile phone connects to the SUN2000L over a router. Do not use this method for the first login and ensure that the SUN2000L has connected to the router.

a. If the SUN2000L WiFi network has connected to the router, Choose Settings >

WLAN on the mobile phone and tap the WiFi name corresponding to the router.

b. Enter the router WiFi password for connection. c. Run the app. The Inverter list screen displays all the Huawei SUN2000Ls that

have connected to the router.

Figure 7-9 Mobile phone connecting to the SUN2000L over a router

----End

The following text describes the operations on Android screens. The operations on iOS screens are the same as those on Android screens, except that the screens are somewhat different. The actual screens prevail.

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7.4 App Operations by the Installer

7.4.1 Logging In to the App

Prerequisites

The corresponding SUN2000L is displayed on the Inverter list screen.

Procedure

Step 1 On the Inverter list screen, tap the corresponding SUN2000L, select installer, enter the

password, and log in to the app.



The name of the connected SUN2000L is represented by its serial number (SN), which is available on the SN label attached to the side of the SUN2000L.



The login password is the same as that for the SUN2000L connected to the app and is used only when the SUN2000L connects to the app.



The initial password is 00000a. Use the initial password upon first login. To ensure account security, change the password immediately after login.



If you enter wrong passwords for five consecutive times and the interval between two consecutive passwords is within 2 minutes, your account will be locked out for 5 minutes.

Figure 7-10 Identity authentication

Step 2 If you log in successfully, the Quick setting or Operation console screen is displayed.



The Quick setting screen is displayed only when the SUN2000L connects to the app for the first time or the factory defaults of the SUN2000L are restored.



If you do not follow the deployment wizard, the Quick setting screen is still displayed when you log in next time.



To exit the deployment, press the Back button on the mobile phone or tap Exit on the screen. To enter the Quick setting screen again, choose Quick setting from the Operation console screen.

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The Quick setting screen provides two deployment modes. Select either of them based on site requirements.



Method 1: quick setting

Figure 7-11 Quick setting

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

Set the grid code that applies to the country or region where the PV plant is located and the SUN2000L model.



If there is no need to connect to the router or management system, skip relevant steps.



After the management system is successfully connected, the SUN2000L will report the SN and installer registration code. If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000L automatically and is used for the installer to register with the management system and manage the inverter.



For the operations about how to add devices, see 7.4.3.1 Adding/Deleting Devices.



After quick setting is complete, tap Switch to Router WiFi to switch to the Available WiFi networks nearby screen and tap the corresponding router WiFi connection to switch

to the router WiFi network.



To connect to the router WiFi network from the mobile phone system after router parameters are successfully set, you need to log out of the app and log in again.



After following all the instructions on the Quick setting screen, tap Save settings to store the configurations or tap Return to home to return to the Operation console screen.



Method 2: use the saved file

Before choosing Use saved file for quick setting, ensure that the corresponding configuration file is saved in your mobile phone. To generate a configuration file, tap Save settings on the

Quick setting screen.

Figure 7-12 Performing quick setting using a saved file

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

To change the configuration file to be imported, tap Change.



In the dialog box with Are you sure you want to configure the inverter connected router settings again, if you tap Confirm, the router configurations saved before will be cleared. If you tap Cancel,

you only have to enter the saved router password.



After quick setting is complete, tap Switch to Router WiFi to switch to the Available WiFi networks nearby screen and tap the corresponding router WiFi connection to switch to the router

WiFi network.



To connect to the router WiFi network from the mobile phone system after router parameters are successfully set, you need to log out of the app and log in again.



After the management system is successfully connected, the SUN2000L will report the SN and installer registration code. If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000L automatically and is used for the installer to register with the management system and manage the inverter.

Figure 7-13 Operation console

----End

7.4.2 Querying the SUN2000L Information

To query the SUN2000L information, choose Device info from the Operation console screen.

Querying Power Curves

You can query the current-day power curve and energy yield.

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Figure 7-14 Power curve

Querying Energy Yields

You can query daily, monthly, and yearly energy yields.

Figure 7-15 Energy yield stat

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Querying Device Status

You can query the status of each device.

Figure 7-16 Device status

Querying Alarms

You can query active and historical alarms.

To set the sorting mode for active alarms or historical alarms, tap . To query the historical alarms within a certain time range, tap and select the time range.

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Figure 7-17 Alarm query

7.4.3 Maintaining the SUN2000L

To maintain the SUN2000L, choose Device maint from the Operation console screen.

Figure 7-18 Maintaining the SUN2000L

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The IPS check function is available only for the Italy CEI0-21 grid code.

7.4.3.1 Adding/Deleting Devices

Procedure

Step 1 On the Operation console screen, choose Device maint > Add/Delete device, and add a

power meter and battery according to actual conditions. Tap Submit to deliver the device information to the SUN2000L.

Each device must have a unique communications address.

Figure 7-19 Adding/Deleting devices

Table 7-1 Description of the parameters on the Add meter tab page

Parameter

Description

Value Range

Comm addr

Specifies the RS485 address for the connected power meter. The address should be the same as the actual address for the power meter.

[1, 247]

Meter model

Specifies the model of the connected power meter. No power meter of other models can be connected.



CHINT-DDSU666



CCS-WNC-3Y-400-MB



Gavazzi-EM340DINAV 23XS1X



Gavazzi-EM111DINAV 81XS1X

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Table 7-2 Description of the parameters on the Add battery tab page

Parameter

Description

Value Range

Comm addr

Specifies the RS485 address for the connected battery. The address should be the same as the actual address for the battery.

[1, 247] Battery type

Specifies the model of the connected battery. No battery of other models can be connected.

LG-RESU

Maximum Discharging Power

Specifies the maximum battery charging power.

The maximum charging power is limited by the maximum output power of the SUN2000L and whether the charge/discharge power function is enabled.

[0, 3500]

Maximum Charging Power

Specifies the maximum battery discharging power.

The maximum discharging power is limited by the maximum output power of the SUN2000L and whether the charge/discharge power function is enabled.

[0, 3500]

Full Charging Capacity

Specifies the battery charging cutoff capacity.

[90, 100]

Full Discharging Capacity

Specifies the battery discharging cutoff capacity.

[12, 20]

----End

7.4.3.2 Upgrading the Device

Prerequisites

You have obtained the upgrade file with the help of your supplier or Huawei engineers.

Context



In the iOS system, the upgrade file can be imported to the mobile phone over your mailbox. The upgrade file name extension must be .zip. Manually select is unavailable.

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

In the Android system, the upgrade file can be copied to the mobile phone. The upgrade file name extension must be .zip and the file can be stored in your required directory. Manually select is available.

Procedure

Step 1 On the Operation console screen, choose Device maint > Upg device and follow the

instructions.

Figure 7-20 Upgrading the SUN2000L

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Figure 7-21 Upgrading the battery



There are DCDC and BMS upgrade packages for the battery. Choose one or both of the upgrade packages based on the actual situation.



In the DCDC version, 7 kW corresponds to RESU10H and 5 kW corresponds to RESU7H.

----End

7.4.3.3 Energy Control

On the Operation console screen, choose Device maint > Energy control and perform the corresponding operation.

Figure 7-22 Energy control

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7.4.3.3.1 Grid-tied Point Control

Procedure

Step 1 On the Operation console screen, choose Device maint > Energy control > Grid-tied point

control and perform the corresponding operation.

Figure 7-23 Grid-tied point control

Table 7-3 Description of control mode parameters

Parameter

Description

Value Range

Control mode

If this parameter is set to Default, the SUN2000L output power is not limited. The SUN2000L can export its rated power to the power grid.

If this parameter is set to

Grid connection with zero power and the SUN2000L

is connected to a power meter, the output power of the SUN2000L is supplied only to the local load, but not the power grid.

If this parameter is set to

Power-limited Grid Connection and the

SUN2000L is connected to a power meter, the SUN2000L supplies power limited based on the setting of Grid-tied Point Power to the power grid. The time for power-limited grid connection precision is 3s. The precision is [-3%Pmax, 0].



Default



Grid connection with zero power



Power-limited Grid Connection

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----End

7.4.3.3.2 Energy Storage Control

Control Mode

Step 1 On the Operation console screen, choose Device maintenance > Energy control > Energy

storage control > Control mode and perform the corresponding operation.

Figure 7-24 Fix chg/dis

Figure 7-25 Maximum use of self-produced power

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Figure 7-26 Time-of-use price

Table 7-4 Description of energy storage control parameters

Parameter

Description

Value Range

Control mode



If this parameter is set to Fix chg/dis, charging or discharging is allowed during the configured period. A maximum of 10 time periods can be added.



If this parameter is set to

Maximum use of self-produced power

and the SUN2000L is connected to a power meter, the output power of the SUN2000L is supplied to the local load and the surplus power is supplied to the power grid.



If this parameter is set to Time-of-use price, the battery is discharged when the electricity price is high and charged during other periods. 1/2 of higher prices among added electricity prices are high electricity prices. A maximum of 10 time periods can be added.



Fix chg/dis



Maximum use of self-produced power



Time-of-use price

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----End

Forced Charge/Discharge

Step 1 On the Operation console screen, choose Device maintenance > Energy control > Energy

storage control > Forced charge/discharge and perform the corresponding operation.

Figure 7-27 Forced charge/discharge

Table 7-5 Description of forced charge/discharge parameters

Parameter

Description

Value Range

Charge/discharge power

Specifies the forced charge/discharge control mode.



Stop



Charge power



Discharge power

Forcible chg/dis pwr (W)

Specifies the forced charge/discharge power.

[Negative maximum discharge power, maximum charge power]

Forcible chg/dis time (mins)

Specifies the forced charge/discharge duration.

[0, 1440]

Remaining charge/discharge time (mins)

Displays the remaining charge/discharge time. This Parameter cannot be set.

[0, 1440]

----End

Feed Power into Grid

Step 1 On the Operation console screen, choose Device maintenance > Energy control > Energy

storage control > Feed Power into Grid and perform the corresponding operation.

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Figure 7-28 Feed Power into Grid

Table 7-6 Description Feed Power into Grid

Parameter

Description

Value Range

charge/discharge power

The power grid will charge the battery if Feed Power

into Grid is enabled. Feed Power into Grid is set

to Disable by default. If this function is enabled, comply with the grid charge requirements stipulated in local laws and regulations.



Disable



Enable

----End

7.4.3.4 IPS Check (Only for Italy CEI0-21 Grid Code)

Context

The Italy CEI0-21 grid code requires IPS check for the SUN2000L. During the self-check process, the SUN2000L consecutively checks the protection thresholds and time for 10-min overvoltage, level 1 overvoltage, level 1 undervoltage, level 1 overfrequency, and level 1 underfrequency. The SUN2000L shuts down after the check starts, and it restarts after the check is successful.

Procedure

Step 1 On the Operation console screen, choose Device maintenance > IPS check to access the

IPS check screen.

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Figure 7-29 IPS check

Step 2 Choose to start the S1 or S2 check as required. The default check type is S1. To start the S2

check, you need to set External Signal or Local Command.

Table 7-7 Check type description

Check Type

Description

External Signal Setting

Local Command Setting

S1 (default)

The level 1 overfrequency protection threshold is 50.5 Hz and the level 1 underfrequency protection threshold is 49.5 Hz.

S2

The level 1 overfrequency protection threshold is 51.5 Hz and the level 1 underfrequency protection threshold is 47.5 Hz.

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Check Type

Description

External Signal Setting

Local Command Setting

S2

The level 1 overfrequency protection threshold is 51.5 Hz and the level 1 underfrequency protection threshold is 47.5 Hz.

S2

The level 1 overfrequency protection threshold is 51.5 Hz and the level 1 underfrequency protection threshold is 47.5 Hz.

Step 3 Tap Start to start the check. After the check is complete, IPS State is displayed as Self-test

success.

----End

7.4.3.5 Starting or Shutting Down the SUN2000L

Procedure

Step 1 On the Operation console screen, choose Device maint > Inverter ON/OFF, and perform

operations as required.

Figure 7-30 Starting or shutting down the SUN2000L

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----End

7.4.3.6 Restoring Factory Defaults

Context

Perform this operation with caution because all configured parameters except the current date, time, and networking related parameters will be restored to their factory defaults. This operation will not affect operating information, alarm records, or system logs.

Procedure

Step 1 On the Operation console screen, choose Device maint > Restore defaults, and then tap

Confirm.

Figure 7-31 Restoring factory defaults

----End

7.4.3.7 Clearing Data

Context

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If you clear data, all alarms and energy yield data will be cleared.

Procedure

Step 1 On the Operation console screen, choose Device maint > Clear data.

Figure 7-32 Clearing data

----End

7.4.3.8 Adjusting Total Energy Yield

Procedure

Step 1 On the Operation console screen, choose Device maint > Adjust total energy yield and

perform the corresponding operation.

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Figure 7-33 Adjusting total energy yield

Adjusting total energy yield: Specifies the initial value of inverter energy yield. This parameter is used in SUN2000L replacement scenarios. Set the initial energy yield of the new SUN2000L to the total energy yield of the old SUN2000L to ensure continuous statistics of cumulative energy yield.

----End

7.4.3.9 Restarting the SUN2000L

Procedure

Step 1 To restart the app, choose Device maint > Restart from the Operation console screen.

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Figure 7-34 Restart

----End

7.4.4 Quick Setting

To enter the Quick setting screen, choose Quick setting from the Operation console screen. The Quick setting screen provides two deployment modes. Select either of them based on site

requirements. To exit the deployment, press the Back button on the mobile phone or tap Exit on the screen.

Method 1: quick setting

Step 1 Choose Quick setting from the Operation console screen and perform deployment by

following the instructions.

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Figure 7-35 Quick setting

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Set the grid code that applies to the country or region where the PV plant is located and the SUN2000L model.

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If there is no need to connect to the router or management system, skip relevant steps.



After the management system is successfully connected, the SUN2000L will report the SN and installer registration code. If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000L automatically and is used for the installer to register with the management system and manage the inverter.



For the operations about how to add devices, see 7.4.3.1 Adding/Deleting Devices.



After quick setting is complete, tap Switch to Router WiFi to switch to the Available WiFi networks nearby screen and tap the corresponding router WiFi connection to switch

to the router WiFi network.



To connect to the router WiFi network from the mobile phone system after router parameters are successfully set, you need to log out of the app and log in again.



After following all the instructions on the Quick setting screen, tap Save settings to store the configurations or tap Return to home to return to the Operation console screen.

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Method 2: use the saved file

Before choosing Use saved file for quick setting, ensure that the corresponding configuration file is saved in your mobile phone. To generate a configuration file, tap Save settings on the Quick setting screen.

Step 1 Choose Quick setting > Use saved file from the Operation console screen and perform

deployment by following the instructions.

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Figure 7-36 Performing quick setting using a saved file

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To change the configuration file to be imported, tap Change.

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In the dialog box with Are you sure you want to configure the inverter connected router settings again, if you tap Confirm, the router configurations saved before will be cleared. If you tap Cancel,

you only have to enter the saved router password.



After quick setting is complete, tap Switch to Router WiFi to switch to the Available WiFi networks nearby screen and tap the corresponding router WiFi connection to switch to the router

WiFi network.



To connect to the router WiFi network from the mobile phone system after router parameters are successfully set, you need to log out of the app and log in again.



After the management system is successfully connected, the SUN2000L will report the SN and installer registration code. If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000L automatically and is used for the installer to register with the management system and manage the inverter.

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7.4.5 Setting Grid-Connection Parameters

Setting Grid-Connection Parameters

To set grid codes, choose Grid-connect config from the Operation console screen.

Voltage level, Grid frequency, and Output mode do not have to be set because they are associated

with the grid code.

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Figure 7-37 Grid-connect config

Expert Mode

To set grid parameters, protection parameters, feature parameters, power adjustment parameters, and time in expert mode, choose Grid-connect config > Expert from the Operation console screen.

7.4.5.1 Setting Grid Parameters

To set grid parameters, choose Grid-connect config > Expert > Grid parameters from the Operation console screen.

Figure 7-38 Grid parameters



Vn represents the rated voltage and Fn represents the rated frequency.

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The grid parameter values vary with grid codes. The displayed values prevail.

Table 7-8 Description of grid parameters

Parameter

Description

Value Range

Grid code

Set this parameter based on the grid code of the country or region where the SUN2000L is used and the SUN2000L application scenario.

For details of the grid codes, see A Grid Codes.

The default value varies depending on the model. The displayed value prevails.

Output mode



Single-phase



Split-phase



Dual–live wire

Auto start upongrid recovery

Specifies whether the SUN2000L can start automatically when the power grid recovers.



Disable



Enable

Connect time after grid recovery (s)

Specifies the time after which the SUN2000L begins restarting after the power grid recovers.

[0, 900]

Grid re-con voltage upper limit (V)

For a specific grid code, if the grid voltage exceeds the upper threshold, the SUN2000L is not allowed to connect to the power grid.

[100%Vn, 136%Vn]

Grid re-con voltage lower limit (V)

For a specific grid code, if the grid voltage is below the lower threshold, the SUN2000L is not allowed to connect to the power grid.

[45%Vn, 95%Vn]

Grid re-con freq upper limit (Hz)

For a specific grid code, if the grid frequency exceeds the upper threshold, the SUN2000L is not allowed to connect to the power grid.

[100%Fn, 112%Fn]

Grid re-con freq lower limit (Hz)

For a specific grid code, if the grid frequency is below the lower threshold, the SUN2000L is not allowed to connect to the power grid.

[85%Fn, 100%Fn]

Rea pwr comp (cosφ-P) trigger V (%)

Specifies the voltage threshold for triggering reactive power compensation when low voltage ride-through (LVRT) occurs.

[100, 110]

Rea pwr comp (cosφ-P) exit

Specifies the voltage

[90, 100]

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Parameter

Description

Value Range

V (%)

threshold for exiting reactive power compensation when the SUN2000L recovers from LVRT.

7.4.5.2 Setting Protection Parameters

To set protection parameters, choose Grid-connect config > Expert > Protection parameters from the Operation console screen.

Figure 7-39 Protection parameters



Vn represents the rated voltage and Fn represents the rated frequency.



The protection parameter values vary with the grid code. The displayed values prevail.