KEHUA TECH KM-ACU User manual

Smart Communication Box KM-ACU
User Manual

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Copyright © Xiamen Kehua Digital Energy Tech Co., Ltd. 2022. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Xiamen Kehua Digital Energy Tech Co., Ltd.
Trademarks and Permissions
and other Kehua trademarks are the licensed trademarks of Xiamen Kehua Digital Energy
Tech 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 Kehua 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 specification 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.
XIAMEN KEHUA DIGITAL ENERGY TECH CO., LTD.
Address:
Room 208-38, Hengye Building, No. 100 Xiangxing Road, Torch High-tech
Zone (Xiang'an) Industrial Zone, Xiamen, China
Website:
www.kehua.com
E-mail:
[email protected]
Customer Service Telephone:
400-808-9986
Tel:
0592-5160516
Fax:
0592-5162166

Foreword
Smart Communication Box KM-ACU
User Manual
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Foreword
Summaries
Thank you for choosing the smart communication box!
This document gives a description of the smart communication box, including appearance, features,
working principles, installation, electrical connection, operation, maintenance and storage, etc.
Please save the manual after reading, in order to consult in the future.
The figures in this manual are just for reference, for details please see the actual product.
Symbol Conventions
The manual quotes the safety symbols, these symbols used to prompt users to comply with safety
matters during installation, operation and maintenance. Safety symbol meaning as follows.
Symbol
Description
Alerts you to a high risk hazard that will, if not avoided, result in
serious injury or death.
Alerts you to a medium low risk hazard that could, if not avoided,
result in moderate or minor injury.
Alerts you to a low risk hazard that could, if not avoided, result in
minor injury.
Anti-static prompting.
Be care electric shock prompting.
Provides a tip that may help you solve a problem or save time.
Provides additional information to emphasize or supplement
important points in the main text.

Smart Communication Box KM-ACU
User Manual
Contents
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Contents
1 Safety Description.........................................................................................................................1
1.1 Safety Announcements.....................................................................................................................................1
1.1.1 Use Announcements................................................................................................................................1
1.1.2 ESD Protection........................................................................................................................................3
1.1.3 Grounding Requirements........................................................................................................................3
1.1.4 Moistureproof Protection........................................................................................................................3
1.1.5 Warning Mark Setting.............................................................................................................................3
1.1.6 Electrical Connection..............................................................................................................................4
1.1.7 Measurement Under Operation...............................................................................................................4
1.2 Operator Requirements ....................................................................................................................................4
2 Overview.........................................................................................................................................6
2.1 Product Intro.....................................................................................................................................................6
2.1.1 Features...................................................................................................................................................7
2.2 Appearance and Structure.................................................................................................................................7
2.2.1 Appearance..............................................................................................................................................7
2.2.2 Bottom Layout........................................................................................................................................7
2.2.3 Size .........................................................................................................................................................9
2.3 Application Scheme .........................................................................................................................................9
2.3.1 PLC Communication(Optinal)..............................................................................................................10
2.3.2 PID Function(Optional) ........................................................................................................................10
2.3.3 IO Function(Optional)........................................................................................................................... 11
3 Installation....................................................................................................................................12
3.1 Installation Process.........................................................................................................................................12
3.2 Installation Tools............................................................................................................................................12

Contents
Smart Communication Box KM-ACU
User Manual
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3.3 Selection of Installation Site ..........................................................................................................................14
3.3.1 Installation Environment.......................................................................................................................14
3.3.2 Installation Clearance............................................................................................................................15
3.4 Transporting, Unpacking and Checking.........................................................................................................16
3.4.1 Transporting..........................................................................................................................................16
3.4.2 Unpacking and Checking......................................................................................................................16
3.5 Installation......................................................................................................................................................17
3.5.1 Wall-mounted Installation.....................................................................................................................17
3.5.2 Floor-mounted Installation....................................................................................................................25
3.6 Electrical Connection.....................................................................................................................................25
3.6.1 Safety Announcements..........................................................................................................................25
3.6.2 Wire Requirements................................................................................................................................26
3.6.3 Preparations for Electrical Connection .................................................................................................27
3.6.4 Electrical Connection Procedures.........................................................................................................28
3.7 Check the Installation.....................................................................................................................................36
4 Startup and Shutdown ...............................................................................................................37
4.1 Check Before Startup.....................................................................................................................................37
4.2 Start the Smart Communication Box..............................................................................................................37
4.3 Shut Down the Smart Communication Box...................................................................................................39
5 Maintenance.................................................................................................................................40
5.1 Maintenance...................................................................................................................................................40
6 Stop Running, Dismantle, Discard..........................................................................................42
6.1 Stop Running..................................................................................................................................................42
6.2 Dismantle the Smart Communication Box.....................................................................................................43
6.3 Discard the Smart Communication Box.........................................................................................................43
7 Package, Transportation, Storage.............................................................................................44
7.1 Package ..........................................................................................................................................................44
7.2 Transportation ................................................................................................................................................44
7.3 Storage ...........................................................................................................................................................44

Smart Communication Box KM-ACU
User Manual
Contents
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A Technical Specifications...........................................................................................................46
B Quality Assurance ......................................................................................................................48
C Acronyms and Abbreviations..................................................................................................50

Smart Communication Box KM-ACU
User Manual
1 Safety Description
1
1 Safety Description
This chapter mainly describes the safety announcements. Prior to performing any work on the
equipment, please read the user manual carefully, follow the operation and installation instructions
and observe all danger, warning and safety information.
1.1 Safety Announcements
This section mainly describes the safety announcements when operation and maintenance. For details,
please refer to safety description in relevant chapters.
Before operation, please read the announcements and operation instructions in this section carefully
to avoid accident.
The promptings in the user manual, such as "Danger", "Warning", "Caution", etc. don't include all
safety announcements. They are just only the supplement of safety announcements when operation.
Any equipment damage caused by violating the general safety operation requirements or safety
standards of design, production, and usage will be out of Kehua's guarantee range.
1.1.1 Use Announcements
Don't touch terminals or conductors that connected with grid to avoid lethal risk！

1 Safety Description
Smart Communication Box KM-ACU
User Manual
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There is no operational part inside the equipment. Please do not open the crust of the equipment by
yourself, or it may cause electric shock. The equipment damage caused by illegal operation is out of
the guarantee range.
After disconnect the input and output of the equipment, there still has residual energy in the storage
capacitor of equipment, which may cause electric shock. Do not perform the maintenance until all
power sources are switched off for 5 minutes.
The surface temperature of the equipment may reach to 75℃. During running, please don't touch the
surface to avoid scald.
No liquid or other objects are allowed to enter the equipment, or, it may cause equipment damage.
In case of fire, please use dry power fire extinguisher. If using liquid fire extinguisher, it may cause
electric shock.