Sungrow COM100A User manual

COM100ACommunication BoxUser
ManualCOM100A-V22-UEN-Ver14-
202308M-H-001733
User Manual
Communication Box
COM100A
COM100A-V22-UEN-Ver14-202308

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All Rights Reserved
All Rights Reserved
No part of this document can be reproduced in any form or by any means without the prior
written permission of Sungrow Power Supply Co., Ltd (hereinafter "SUNGROW").
Trademarks
and other Sungrow trademarks used in this manual are owned by
SUNGROW.
All other trademarks or registered trademarks mentioned in this manual are owned by their
respective owners.
Software Licenses
• It is prohibited to use data contained in firmware or software developed by SUNGROW,
in part or in full, for commercial purposes by any means.
• It is prohibited to perform reverse engineering, cracking, or any other operations that
compromise the original program design of the software developed by SUNGROW.

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About This Manual
This manual gives instructions mainly on the transport, storage, installation, electrical
connection, and regular maintenance of the product, yet not all-encompassing regarding all
details. You may visit www. sungrowpower. com or the website of the equipment
manufacturer for more information.
Declaration
To ensure safe use of the product, please read through the below information carefully:
1 This manual is intended for personnel who are responsible for product installation or
other work on the product. Users must have certain electrical and mechanical expertise,
and be familiar with the electrical and mechanical schematics and the characteristics of
electronic components. SUNGROW shall not be held liable for any personal injury or
economic loss arising from the installation carried out by non-qualified personnel or not
in compliance with the safety instructions specified in this manual.
2 All pictures, marks, and symbols in this manual are owned by SUNGROW. No part of
this manual may be reproduced by any non-internal staff without the prior written
authorization of SUNGROW.
3 The manual may be updated and revised from time to time, however, there still might be
slight deviation from the real product or errors. In such cases, the actual product you
have purchased should take precedence. You can find the latest version of user manual
on the company's website, or reach your sales for it.
4 To ensure the safety of the installation personnel, the product, and the system, be sure
to follow the safety instructions specified in this manual when installing the product.
SUNGROW shall not be held liable for any personal injury or economic loss arising from
failure to follow the instructions specified in this manual.
5 If maintenance on or alteration to this product is needed, please contact SUNGROW
customer service in advance. The copyright of this user manual belongs to SUNGROW,
and any rights not expressly granted are reserved. The content herein is subject to
change without notice and may deviate from the actual up-to-date product.
Target Group
This manual is intended for qualified technical persons who are responsible for installation,
electrical connection, and other relevant work on the product.
Installation can only be done by qualified technical persons. Qualified technical persons
must:
• Have certain electrical wiring, electronic, and mechanical expertise, and be familiar with
electrical and mechanical schematics;
• Have received professional training in the installation and commissioning of electrical
equipment;
• Be able to respond quickly to dangers or emergencies that may occur during the process
of installation and commissioning;

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• Read through this manual carefully and have a good understanding of the relevant
safety instructions;
• Be familiar with applicable local standards and relevant safety regulations on electrical
systems.
How to Use This Manual
Read through this manual carefully before using the product, and keep it properly in an
easy-to-reach place.
The manual may be updated and revised from time to time, however, there still might be
slight deviation from the real product or errors. In such cases, the actual product you have
purchased should take precedence. You can find the latest version of the manual at
support.sungrowpower.com or reach your sales for it.
Symbols in the Manual
To ensure the safety of life and property for users when using the product and to improve the
efficiency of product use, the manual provides relevant safety information, which are
highlighted by the following symbols.
Symbols used in this manual are listed below. Please review carefully for better use of this
manual.
Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
Indicates a moderately hazardous situation which, if not avoided, will result in
death or serious injury.
Indicates a slightly hazardous situation which, if not avoided, may result in minor
or moderate injury.
Indicates a potential hazard which, if not avoided, will result in device malfunction
or property damage.
Indicates supplementary information, emphasis on specific points, or tips related
to the use of the product that might help to solve your problems or save your time.

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Contents
All Rights Reserved .....................................................................................................I
About This Manual......................................................................................................II
1 Safety Instructions ............................................................................................1
1.1 Safety Signs on the Product ............................................................................1
1.2 General Safety Instructions .............................................................................2
1.3 Packaging, Transport, and Storage Safety........................................................4
1.4 Installation Safety ...........................................................................................5
1.5 Electrical Safety .............................................................................................7
1.6 Operation Safety ............................................................................................8
1.7 Maintenance Safety........................................................................................8
1.8 Disposal Safety ............................................................................................10
2 Product Description ........................................................................................ 11
2.1 Function Introduction .................................................................................... 11
2.2 Main Features .............................................................................................. 11
2.3 Dimensions.................................................................................................. 11
3 Mechanical Installation ..................................................................................13
3.1 Installation Notices .......................................................................................13
3.2 Inspection before Installation .........................................................................13
3.3 Location Requirements .................................................................................14
3.4 Installation Method .......................................................................................14
3.4.1 Wall Mounting.....................................................................................15
3.4.2 Ground Mounting ................................................................................16
3.4.3 Pole Mounting (optional) ......................................................................17
4 Electrical Connection .....................................................................................18
4.1 Electrical Connection Notices ........................................................................18
4.2 Waterproof Terminal Description ....................................................................19
4.3 Internal Structure..........................................................................................19
4.4 Preparation Before Connection......................................................................21
4.5 Electrical Connection Steps...........................................................................22
4.5.1 Grounding ..........................................................................................22
4.5.2 RS485 Communication Terminal Connection ........................................24

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4.5.3 Optical Fibre (Optional)........................................................................25
4.5.4 AC 220V Connection...........................................................................26
4.5.5 PLC Port Connection...........................................................................27
4.6 Communication Methods ..............................................................................30
5 Commissioning ...............................................................................................31
5.1 Operation Notices.........................................................................................31
5.2 Inspection before Commissioning ..................................................................31
5.3 Commissioning Steps ...................................................................................31
6 Troubleshooting and Maintenance ..............................................................33
6.1 Maintenance Notices ....................................................................................33
6.2 Troubleshooting ...........................................................................................33
7 Appendix A: Related Parameters ................................................................35
8 Appendix B: General Information .................................................................36
8.1 Quality Assurance ........................................................................................36
8.2 Contact Information ......................................................................................36

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1Safety Instructions
Be sure to read through this manual carefully before proceeding with the transport, storage,
installation, operation, use, and maintenance of the device. All work should be done by
strictly following the safety instructions mentioned in this manual to ensure the personnel
safety. Improper use or misoperation may result in:
• Injury to or death of the operator or other people;
• Damage to the device or the property of the operator or other people.
• Safety instructions in this manual should only serve as a supplement and not
all-encompassing regarding all the norms that need to be followed. All work
should be carried out considering the actual situation on the site.
• SUNGROW shall not be held liable for damages caused by violation of safe
operation requirements, general safety standards, and safety instructions in
this manual.
1.1 Safety Signs on the Product
Signs on the Product
Observe all warning signs on the product at all times, which are:
Symbol Description
High voltage inside. Risk of electrical shock hazard when it is
touched.
PE (Protective Earthing) terminal, which should be grounded properly
to ensure the safety of operators.
Labels Inside the Product
Observe all labels inside the product at all times, which are:
Symbol Description
Warning Electric Shock.
Must wear insulated protection supplies.

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1.2 General Safety Instructions
Compliance with Laws and Regulations
All work, including transport, storage, installation, operation, use, and mainte-
nance, should be done in compliance with the local laws, regulations, standards,
and specifications.
Personnel Requirements
Persons who perform operations on the device must meet the following
requirements:
• Have received professional training in the installation and commissioning of
electrical equipment, and have the necessary experience;
• Be able to respond quickly to dangers or emergencies that may occur during
the process of installation and commissioning;
• Persons, who are responsible for device installation and maintenance, must be
trained thoroughly and have a firm grasp of the correct operation methods and
a good knowledge of safety precautions and applicable local standards of the
country/region;
• Persons responsible for special types of work (e.g. electrical operations, work-
ing at heights) must have relevant qualifications as required by the local regula-
tions of the country/region.
• Do not wear any conductive object, such as watches, bracelets, bangles, rings,
and necklaces, during the operation process, so as to avoid electrical burns.
• Do not smoke in the area where the device is located, so as to prevent fires,
electric shocks, and explosions, which may result in personal injuries or prop-
erty damages.
Use specialized insulated tools during operation to avoid electric shock hazards or
short circuits. The tools should have an insulation withstand voltage rating that
meets the requirements of the applicable local laws, regulations, standards, and
specifications.
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Wear specialized personal protective equipment during the process of operation,
such as protective clothing, insulated shoes, goggles, safety helmets, and safety
gloves.
Personnel except for those who perform operations on the device should stay
away from the device.
Tools Requirements
• Ensure all necessary tools are ready, without any damage, and pass the inspec-
tion by a specialized agency. Do not use tools that have signs of damages or fail
to pass the inspection. Make sure the tools are firm and secure.
• Understand how to use the tools correctly before starting using them to avoid
personal injury or damage to the device.
• Use a wooden or insulated ladder when working at heights to avoid getting an
electric shock.
• Check if the ladder is in good shape and if its load capacity meets the require-
ments. Do not overload the ladder.
Environment Requirements
Do not place the device near heat or fire, so as to prevent damaging the device or
causing fires.
Do not store flammables and explosives in the device area. Do not place the device
in an environment with flammable, explosive gas or smoke, or perform any opera-
tion in such environments.
Do not install the device in an area close to liquids, so as to avoid device malfunc-
tion or short circuits caused by ingress of liquids.
User Manual 1 Safety Instructions

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When installing the device, ensure the foundation is solid and stable and has a
load-bearing capacity up to the requirements of the device.
Do not perform any operation on the product (including but not limited to, handling,
installing, powering on, and maintaining the product, performing electrical connec-
tion, and working at heights) in harsh weather conditions, such as thunder and
lightning, rain, snow, and Level 6 or stronger winds.
The device should be kept in a clean, dry, and well-ventilated place and protected
from dust and condensation.
Do no install the device in a place with strong vibration, strong noise source, or
strong electromagnetic field interference.
To prevent irrelevant personnel from operating the product by mistake or other ac-
cidents, please set up highly visible warning signages or safety warning tapes
around the product.
Ensure the safety signs, warning labels, and the nameplate of the device are
clearly legible.
1.3 Packaging, Transport, and Storage Safety
Packaging
The product is packed in a cardboard box with orientation markings that provide loading and
unloading instructions.
Transport
• All work related to transport must be carried out in compliance with the applicable local
laws and regulations of the country/region.
• Measures should be taken to fasten the goods during transport, so as to avoid damages
to product packaging due to strong shaking or bumping.
1 Safety Instructions User Manual

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• Get prepared for carrying its weight before handling the device to avoid getting hurt. This
device should be moved by at least 3 people together.
Storage
• The place where the product is stored should be kept dry, clean, and well-ventilated, pro-
tected from hazardous gases.
• Do not store the product in a place where corrosives are kept.
• The packaged product should be stored in an appropriate environment. See "Technical
Data" for the corresponding environmental parameters.
Unpacking and Inspection
• Non-qualified personnel are forbidden from disassembling the device or moving its
components.
• Check if the product you have received matches the order you placed.
• Inspect the product for external damages or damages to its structural parts.
• Check if the safety signs, warning labels, and the nameplate on the product are all
legible.
In case of any problem with the above-mentioned inspection items, contact SUNGROW in
time.
1.4 Installation Safety
During installation, do not perform any operation on the device when it is powered
on. Do not connect or disconnect the cables when the device is powered on, as
electric arcs or sparks may occur immediately when the cable core is in contact
with the conductor, which may cause fires or personal injuries.
Installation should be conducted in compliance with the applicable local laws, reg-
ulations, standards, and specifications.
Installation Requirements
Poor operating environments will affect the device's system performance!
• Install the product in a well-ventilated place.
• Ensure the product’s heat dissipation system or air vent is not blocked.
• Do not install the product in an environment with flammables, explosives, or
smoke.
User Manual 1 Safety Instructions

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Pre-installation
• Upon receiving the product, be sure to inspect it for damages. Contact SUN-
GROW or the transport company immediately in case of anything abnormal.
• Be sure to have a good understanding of the safety instructions in this manual
before performing any operation on the product.
• Please load/unload, handle, install, operate, and maintain the device by refer-
ring to the descriptions in this manual to ensure the safe use of the device.
• Before installing the device, ensure the cabinet is stable and not tilted.
During Installation
This product can only be used for purposes specified in this manual. Unauthorized
alternations or use of parts and components not sold or recommended by SUN-
GROW may result in fires, electric shocks, and other hazards.
Disconnect all electrical connection and the upstream input switch before installa-
tion, and ensure the device is voltage-free.
If drilling is required during installation:
• Wear goggles and safety gloves.
• Avoid the water pipes and electrical wires inside the wall when drilling.
• Cover the product to protect it from ingress of debris and dust.
Post-installation
After the device is installed, clear away the empty packaging materials in the de-
vice area, such as the cardboard box, foam, plastics, and ties.
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1.5 Electrical Safety
Improper wiring may result in personal injuries. Operators responsible for electrical wiring
must read through the safety instructions carefully before proceeding with this work.
Before carrying out electrical connection:
• Make sure the product is not damaged; otherwise, it may lead to danger.
• Disconnect the upstream input switch and ensure the device is voltage-free;
otherwise, it may lead to electric shocks.
Improper or incorrect electrical wiring may result in accidents such as fires or elec-
tric shocks.
Danger to life due to high voltage inside the device!
• When performing electrical wiring, operators must wear proper personal pro-
tective equipment and use specialized insulated tools, so as to avoid electric
shock hazards or short circuits.
• Ensure the cables are voltage-free using a measurement instrument before
touching them.
• Please observe the warning signs on the device, and perform operations by
strictly following the corresponding safety instructions.
For the device that needs to be grounded, connect the PE cable as the first step
when installing it, and disconnect the PE cable at the very end of the process when
removing it.
Before operating the device, inspect the electrical connection and ensure the de-
vice is reliably grounded.
If the power cable is not long enough, replace it with a new one. Do not add joints
or welding spots to the power cable.
User Manual 1 Safety Instructions

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• Electrical connection must be performed by qualified personnel.
• All work related to wiring must be conducted in compliance with the applicable
local laws and regulations of the country/region.
• Please observe the warning signs on the device, and perform operations by
strictly following the corresponding safety instructions.
• Damages to the product due to incorrect wiring will not be covered by the
warranty.
1.6 Operation Safety
There is high voltage inside the device when it is running, and improper operation may
cause personal injuries or property damages. Please perform operations by strictly following
the safety instructions specified in this manual and other relevant documentation.
When laying cables, keep the cables at least 30 mm away from the outer edge of
the heat-generating components or areas, so as to protect the insulation layer of
cables from aging or getting damaged due to high temperature.
When the device is running:
• Do not touch any live component of the device; otherwise, it may lead to electri-
cal shocks.
• Do not touch any wiring terminal on the device; otherwise, it may lead to electri-
cal shocks.
• Do not touch any hot part of the device (e.g. heat sink); otherwise, it may cause
burns.
1.7 Maintenance Safety
Improper maintenance may lead to personal injuries or property damages. Therefore, it is
necessary to power off the device before maintenance and perform operations by strictly fol-
lowing the safety instructions specified in this manual and other relevant documentation.
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• Before maintenance, disconnect the upstream power supply and PLC power
supply first; otherwise, it may cause personal injury.
• Wait 25 minutes after the device is powered off, then measure the voltage and
current with a specialized measurement instrument. Only when no current or
voltage is present, operators, who wear protective equipment, can perform op-
eration and maintenance on the device.
• Even if the device is shut down, it may still be very hot and cause burns. Please
perform operations on the device wearing safety gloves after it cools down.
Do not touch the grid or the contacts and terminals inside the product that are con-
nected to the grid; otherwise, it may lead to electric shocks.
Power off the device before proceeding with maintenance.
• Repair of the device can only be performed by SUNGROW's service team or
qualified personnel.
• Users are forbidden from performing repair and maintenance or replacing mod-
ules by themselves. Otherwise, it may cause severe personal injuries or prop-
erty damages.
To prevent irrelevant personnel from operating the product by mistake or other ac-
cidents, please set up highly visible warning signages or safety warning tapes
around the product.
User Manual 1 Safety Instructions

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• Do not use cleaning agents to clean up the device. Otherwise, the device may
be damaged, and losses caused therefrom will not be covered by the warranty.
• If the paint on device's enclosure peels off or the enclosure gets rusty, repair it
in time. Otherwise, the device performance may be affected.
• No component inside the device requires maintenance. Do not open the device
(except for the junction box) or replace any internal components without au-
thorization. Otherwise, damages caused therefrom will not be covered by the
warranty.
• To minimize the risk of electric shocks, do not perform maintenance operations
that are not specified in this manual. If needed, please contact SUNGROW for
maintenance and repair services. Otherwise, damages caused therefrom will
not be covered by the warranty.
1.8 Disposal Safety
Please scrap the product in accordance with relevant local regulations and standards to
avoid property damages or personal injuries.
• All work related to product scrapping must be done in compliance with the ap-
plicable local laws and regulations of the country/region.
• Ensure the safety signs, warning labels, and the nameplate on the product are
all legible before scrapping it.
1 Safety Instructions User Manual

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2Product Description
2.1 Function Introduction
The system block diagram is shown in the following figure.
2.2 Main Features
Smart and flexible
• Integrating fiber switch and splice box, easy and flexible networking
• Integrating data collector, support of local intelligent commissioning
• Wall mounting, pole mounting, and ground mounting available, flexible installation
Simple and efficient
• Seamless connection to iSolarCloud, easy management of PV devices
• Built-in PLC communication, communication and management of string inverters without
cable routing
Safe and reliable
• Equipped with electrical isolation and SPD protection, steady and reliable
communication
• Ingress of protection IP65, long-term reliable outdoor operation
2.3 Dimensions
The external dimensions of COM100A are shown in the following figure.

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2 Product Description User Manual