Huawei SmartACU2000D Series User manual

SmartACU2000D Smart Array Controller
User Manual (with No PID
Module)
Issue
01
Date
2020-02-14
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2020. 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 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:
https://e.huawei.com

SmartACU2000D SmartArray Controller
User Manual (with No PID Module)
About This Document
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About This Document
Purpose
This document describes the SmartACU2000D smart array controller (SACU for short),
which is an outdoor cabinet, in terms of its installation, electrical connections, commissioning,
and maintenance. Before installing and operating an SACU, closely read this manual to get
familiar with the functions and features of the device as well as the precautions.
Figures used in this document are for reference only.
Intended Audience
This document is intended for photovoltaic (PV) plant operators and qualified electricians.
Symbol Conventions
The symbols that may be found in this guide are defined as follows.
Symbol
Description
Indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium level of risk which, if not
avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk which, if not avoided,
could 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.
Supplements the important information in the main text.
NOTE is used to address information not related to personal
injury, equipment damage, and environment deterioration.

SmartACU2000D SmartArray Controller
User Manual (with No PID Module)
About This Document
Issue 01 (2020-02-14)
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iii
Change History
Updates between document issues are cumulative. The latest document issue contains all the
changes in earlier issues.
Issue 01 (2020-02-14)
This issue is used for first office application (FOA).

SmartACU2000D SmartArray Controller
User Manual (with No PID Module)
Contents
Issue 01 (2020-02-14)
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iv
Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
1.1 General Safety ..............................................................................................................................................................1
1.2 Personnel Requirements ...............................................................................................................................................2
1.3 Electrical Safety............................................................................................................................................................3
1.4 Installation Environment Requirements .......................................................................................................................4
1.5 Mechanical Safety ........................................................................................................................................................4
1.6 Commissioning.............................................................................................................................................................5
1.7 Maintenance and Replacement.....................................................................................................................................5
2 Overview.........................................................................................................................................7
2.1 Model............................................................................................................................................................................7
2.2 Product Introduction.....................................................................................................................................................8
2.3 Appearance ................................................................................................................................................................. 11
2.3.1 Product Appearance................................................................................................................................................. 11
2.3.2 Enclosure Signs .......................................................................................................................................................13
2.4 Product Composition..................................................................................................................................................14
2.5 Working Principles .....................................................................................................................................................18
2.6 Configuration in Different Scenarios..........................................................................................................................21
2.6.1 Fiber Ring Network.................................................................................................................................................21
2.6.2 4G LTE ....................................................................................................................................................................25
2.6.3 4G............................................................................................................................................................................28
3 Storage Requirements ................................................................................................................31
4 System Installation .....................................................................................................................32
4.1 Checking Before Installation......................................................................................................................................32
4.2 Tools ...........................................................................................................................................................................32
4.3 Installation Requirements...........................................................................................................................................34
4.4 Installing the Cabinet..................................................................................................................................................35
4.4.1 Wall-mounted Installation........................................................................................................................................35
4.4.2 Support-mounted Installation ..................................................................................................................................37
4.4.3 Pole-mounted Installation........................................................................................................................................40
4.5 Installing the Components..........................................................................................................................................42

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4.5.1 Opening the Main Cabinet Door..............................................................................................................................42
4.5.2 (Optional) Installing the SmartModule....................................................................................................................42
4.5.3 (Optional) Installing the Ethernet Switch ................................................................................................................44
4.5.4 (Optional) Installing the 24 V Power Module..........................................................................................................45
4.5.5 Installing the PoE Module .......................................................................................................................................45
4.5.6 (Optional) Installing the PoE SPD...........................................................................................................................46
4.5.7 Installing the SIM Card and 4GAntenna.................................................................................................................47
5 Electrical Connections................................................................................................................49
5.1 Selecting a Connection Mode.....................................................................................................................................49
5.1.1 Common Connection...............................................................................................................................................50
5.1.2 Connection Through a Tube ....................................................................................................................................50
5.2 Crimping an OT Terminal...........................................................................................................................................52
5.3 Connecting the PE Cable............................................................................................................................................52
5.4 Connecting the Communications Cables for the Fiber Ring Network........................................................................53
5.5 Connecting the 4G LTE Cable (with a PoE SPD).......................................................................................................57
5.6 Connecting the 4G LTE Cable (Without a PoE SPD).................................................................................................59
5.7 Connecting the Three-Phase AC Power Cable............................................................................................................60
5.8 Connecting the Peripheral RS485 Communications Cables.......................................................................................61
5.9 (Optional) Connecting the Peripheral Network Cable................................................................................................63
5.10 (Optional) Connecting the DC Output Power Cable to the 24 V Power Module .....................................................64
5.11 Connecting the Single-Phase Power Cable...............................................................................................................65
5.12 Connecting DO/DI/AI Cables...................................................................................................................................66
6 System Commissioning .............................................................................................................68
6.1 Checking Before Power-On........................................................................................................................................68
6.2 Powering On the System.............................................................................................................................................68
6.3 Closing the Cabinet Door ...........................................................................................................................................69
6.4 Powering Off the System............................................................................................................................................69
7 System Maintenance ..................................................................................................................71
7.1 Routine Maintenance..................................................................................................................................................71
7.2 Troubleshooting..........................................................................................................................................................72
7.3 Component Replacement............................................................................................................................................73
7.3.1 Replacing the Single/Three-Phase SPD...................................................................................................................74
7.3.2 Replacing the Knife Fuse Switch.............................................................................................................................75
7.3.3 Replacing the Fuse of a Knife Fuse Switch.............................................................................................................76
7.3.4 Replacing the Single-Phase Input Switch................................................................................................................76
7.3.5 Replacing the SmartMBUS CCO Module...............................................................................................................76
7.3.6 Replacing the SmartLogger .....................................................................................................................................77
7.3.7 Replacing the Power Adapter ..................................................................................................................................79
7.3.8 Replacing the Fiber Adapter ....................................................................................................................................79
7.3.9 Replacing the USB Port...........................................................................................................................................80

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User Manual (with No PID Module)
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8 Technical Specifications ............................................................................................................82
A Acronyms and Abbreviations..................................................................................................84

SmartACU2000D SmartArray Controller
User Manual (with No PID Module)
1 Safety Precautions
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1
1 Safety Precautions
1.1 General Safety
Statement
Before installing, operating, and maintaining the equipment, read this document and observe
all the safety instructions on the equipment and in this document.
The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this document
do not cover all the safety instructions. They are only supplements to the safety instructions.
Huawei will not be liable for any consequence caused by the violation of general safety
requirements or design, production, and usage safety standards.
Ensure that the equipment is used in environments that meet its design specifications.
Otherwise, the equipment may become faulty, and the resulting equipment malfunction,
component damage, personal injuries, or property damage are not covered under the warranty.
Follow local laws and regulations when installing, operating, or maintaining the equipment.
The safety instructions in this document are only supplements to local laws and regulations.
Huawei will not be liable for any consequences of the following circumstances:
Operation beyond the conditions specified in this document
Installation or use in environments which are not specified in relevant international or
national standards
Unauthorized modifications to the product or software code or removal of the product
Failure to follow the operation instructions and safety precautions on the product and in
this document
Equipment damage due to force majeure, such as earthquakes, fire, and storms
Damage caused during transportation by the customer
Storage conditions that do not meet the requirements specified in this document
General Requirements

SmartACU2000D SmartArray Controller
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Do not work with power on during installation.
Do not install, use, or operate outdoor equipment and cables (including but not limited to
moving equipment, operating equipment and cables, inserting connectors to or removing
connectors from signal ports connected to outdoor facilities, working at heights, and
performing outdoor installation) in harsh weather conditions such as lightning, rain,
snow, and level 6 or stronger wind.
After installing the equipment, remove idle packing materials such as cartons, foam,
plastics, and cable ties from the equipment area.
In the case of a fire, immediately leave the building or the equipment area, and turn on
the fire alarm bell or make an emergency call. Do not enter the building on fire in any
case.
Do not scrawl, damage, or block any warning label on the equipment.
Tighten the screws using tools when installing the equipment.
Understand the components and functioning of a grid-tied PV power system and relevant
local standards.
Repaint any paint scratches caused during equipment transportation or installation in a
timely manner. Equipment with scratches cannot be exposed to an outdoor environment
for a long period of time.
Personal Safety
If there is a probability of personal injury or equipment damage during operations on the
equipment, immediately stop the operations, report the case to the supervisor, and take
feasible protective measures.
Use tools correctly to avoid hurting people or damaging the equipment.
Do not touch the energized equipment, as the enclosure is hot.
1.2 Personnel Requirements
Personnel who plan to install or maintain Huawei equipment must receive thorough
training, understand all necessary safety precautions, and be able to correctly perform all
operations.
Only qualified professionals or trained personnel are allowed to install, operate, and
maintain the equipment.
Only qualified professionals are allowed to remove safety facilities and inspect the
equipment.
Personnel who will operate the equipment, including operators, trained personnel, and
professionals, should possess the local national required qualifications in special
operations such as high-voltage operations, working at heights, and operations of special
equipment.
Only professionals or authorized personnel are allowed to replace the equipment or
components (including software).
Professionals: personnel who are trained or experienced in equipment operations and are clear of the
sources and degree of various potential hazards in equipment installation, operation, and
maintenance

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Trained personnel: personnel who are technically trained, have required experience, are aware of
possible hazards on themselves in certain operations, and are able to take protective measures to
minimize the hazards on themselves and other people
Operators: operation personnel who may come in contact with the equipment, except trained
personnel and professionals
1.3 Electrical Safety
Grounding
For the equipment that needs to be grounded, install the ground cable first when
installing the equipment and remove the ground cable last when removing the
equipment.
Do not damage the ground conductor.
Do not operate the equipment in the absence of a properly installed ground conductor.
Ensure that the equipment is connected permanently to the protective ground. Before
operating the equipment, check its electrical connection to ensure that it is securely
grounded.
General Requirements
Before connecting cables, ensure that the equipment is intact. Otherwise, electric shocks or
fire may occur.
Ensure that all electrical connections comply with local electrical standards.
Ensure that the cables you prepared meet local regulations.
Use dedicated insulated tools when performing high-voltage operations.
AC and DC Power
Do not connect or disconnect power cables with power on. Transient contact between the core
of the power cable and the conductor will generate electric arcs or sparks, which may cause
fire or personal injury.
Before making electrical connections, switch off the disconnector on the upstream device
to cut off the power supply if people may contact energized components.
Before connecting a power cable, check that the label on the power cable is correct.
If the equipment has multiple inputs, disconnect all the inputs before operating the
equipment.

SmartACU2000D SmartArray Controller
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Cabling
When routing cables, ensure that a distance of at least 30 mm exists between the cables
and heat-generating components or areas. This prevents damage to the insulation layer of
the cables.
Bind cables of the same type together. When routing cables of different types, ensure that
they are at least 30 mm away from each other.
Ensure that the cables used in a grid-tied PV power system are properly connected and
insulated and meet specifications.
1.4 Installation Environment Requirements
Ensure that the equipment is installed in a well ventilated environment.
To prevent fire due to high temperature, ensure that the ventilation vents or heat
dissipation system are not blocked when the equipment is running.
Do not expose the equipment to flammable or explosive gas or smoke. Do not perform
any operation on the equipment in such environments.
1.5 Mechanical Safety
Using Ladders
Use wooden or fiberglass ladders when you need to perform live working at heights.
When a step ladder is used, ensure that the pull ropes are secured and the ladder is held
firm.
Before using a ladder, check that it is intact and confirm its load bearing capacity. Do not
overload it.
Ensure that the wider end of the ladder is at the bottom, or protective measures have
been taken at the bottom to prevent the ladder from sliding.
Ensure that the ladder is securely positioned. The recommended angle for a ladder
against the floor is 75 degrees, as shown in the following figure. An angle rule can be
used to measure the angle.

SmartACU2000D SmartArray Controller
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When climbing a ladder, take the following precautions to reduce risks and ensure
safety:
−Keep your body steady.
−Do not climb higher than the fourth rung of the ladder from the top.
−Ensure that your body's center of gravity does not shift outside the legs of the
ladder.
Drilling Holes
When drilling holes into a wall or floor, observe the following safety precautions:
Wear goggles and protective gloves when drilling holes.
When drilling holes, protect the equipment from shavings.After drilling, clean up any
shavings that have accumulated inside or outside the equipment.
Moving Heavy Objects
Be cautious to avoid injury when moving heavy objects.
When moving the equipment by hand, wear protective gloves to prevent injuries.
1.6 Commissioning
When the equipment is powered on for the first time, ensure that professional personnel set
parameters correctly. Incorrect settings may result in inconsistency with local certification and
affect the normal operation of the equipment.
1.7 Maintenance and Replacement
High voltage generated by the equipment during operation may cause an electric shock, which
could result in death, serious injury, or serious property damage. Prior to maintenance, power
off the equipment and strictly comply with the safety precautions in this document and
relevant documents.
Maintain the equipment with sufficient knowledge of this document and using proper
tools and testing equipment.
Prior to maintenance, power off the equipment.
Place temporary warning signs or erect fences to prevent unauthorized access to the
maintenance site.

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If the equipment is faulty, contact your dealer.
The equipment can be powered on only after all faults are rectified. Failing to do so may
escalate faults or damage the equipment.

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2 Overview
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2 Overview
2.1 Model
Model Description
This document covers the following product models:
SmartACU2000D-D-00
SmartACU2000D-D-02
SmartACU2000D-D-05CN
Figure 2-1 Model identifiers
Table 2-1 Model description
No.
Meaning
Description
1
Series
SmartACU2000: smart array controller
2
Hardware
D: version D
3
Voltage level
D: ≤ 800 V three-phase AC input
4
Configuration
00: one MBUS route
02: two MBUS routes
05CN: one MBUS route and 4G antenna

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Model Identification
You can view the SACU model on its nameplate.
Figure 2-2 Nameplate (SmartACU2000D-D-00 as an example)
(1) Trademark and model
(2) Key technical specifications
(3) Compliance symbols
(4) Company name and country of origin
The nameplate figure is for reference only.
2.2 Product Introduction
Functions
The SACU is an outdoor cabinet that houses the SmartLogger3000 (SmartLogger for short),
4G antenna, SmartModule1000, Ethernet switch, access terminal box (ATB), and power over
Ethernet (PoE) module.
The SmartLogger monitors and manages PV power systems. It converges ports, converts
protocols, and centrally monitors and maintains the equipment in PV power systems.

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The SmartMBUS CCO module connects to the SUN2000 solar inverters that support the
monitoring bus (MBUS) function to transmit data over power cables, implementing
MBUS networking.
Features
Intelligent and flexible: Connects to a maximum of 150 solar inverters and supports
one-click commissioning.
Easy to use: Supports wizard-based settings, facilitating parameter settings and device
connection.
Stable and reliable: Has a built-in surge protection module. The industrial application is
secure and reliable.
Networking
Figure 2-3 Networking of the SmartACU2000D-D-00 or SmartACU2000D-D-02
Wired network: fiber ring network solution

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A maximum of 15 SmartLoggers can be connected to form an optical fiber ring network. Each
SmartLogger can connect to devices such as solar inverters, environmental monitoring instruments
(EMIs), and power meters.
Multiple optical fiber ring networks can be connected to the management system over an Ethernet
switch.
Wireless network: 4G LTE solution
The IP address of the SmartLogger and that of the customer-premises equipment (CPE) must be on the
same network segment.
Figure 2-4 Networking of the SmartACU2000D-D-05CN
Wired network: fiber ring network solution

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A maximum of 15 SmartLoggers can be connected to form an optical fiber ring network. Each
SmartLogger can connect to devices such as solar inverters, environmental monitoring instruments
(EMIs), and power meters.
Multiple optical fiber ring networks can be connected to the management system over an Ethernet
switch.
Wireless network: 4G solution
2.3 Appearance
2.3.1 Product Appearance
Appearance
Figure 2-5 Appearance
No.
Component
Description
1
Cabinet door
-
2
Mounting plate
-
3
Waterproof connector for the
protective earthing cable (PE)
Specifications: 3/4 in.
Inner diameter: 13–18 mm
(0.51–0.71 in.)
4
Waterproof connectors for the
RS485 communications cable,
network cable, or DC input and
output power cable
(RS485/ETH/DC)
Specifications: 3/4 in.
Inner diameter: 13–18 mm
(0.51–0.71 in.)

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No.
Component
Description
5
Waterproof connector for the DO
signal cable (DO)
Specifications: 5/4 in.
Inner diameter: 20–32 mm
(0.79–1.26 in.)
6
Waterproof connector for the DI
signal cable (DI)
Specifications: 3/4 in.
Inner diameter: 13–18 mm
(0.51–0.71 in.)
7
Waterproof connector for the AI
signal cable (AI)
Specifications: 5/4 in.
Inner diameter: 20–32 mm
(0.79–1.26 in.)
8
USB port (USB)
The USB port is used only for
maintenance (such as upgrade and
data export). Ensure that the USB
cover is tightened when the port is
idle.
9
Waterproof connectors for the
RS485 communications cable or
network cable (RS485/ETH)
Specifications: 3/4 in.
Inner diameter: 13–18 mm
(0.51–0.71 in.)
10
Ventilation valve
-
11
Waterproof connector for the
single-phase AC power cable
(AC INPUT)
Specifications: 3/4 in.
Inner diameter: 13–18 mm
(0.51–0.71 in.)
12
Waterproof connectors for the
three-phase AC power cable
(MBUS01, MBUS02)
Specifications: 1 in.
Inner diameter: 18–25 mm
(0.71–0.98 in.)
13
Waterproof connector for the
optical cable (SFP1)
Specifications: 3/4 in.
Inner diameter: 13–18 mm
(0.51–0.71 in.)
14
Waterproof connector for the
optical cable, network cable, or
4G antenna (SFP2/4G LTE/4G)
Specifications: 3/4 in.
Inner diameter: 13–18 mm

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Dimensions
Figure 2-6 Cabinet dimensions
2.3.2 Enclosure Signs
Symbol
Name
Meaning
Warning symbol for
electric shocks
High voltage exists after the
device is powered on. Only
qualified and trained
electrical technicians are
allowed to install and
operate the device.
Warning label for
multiple power inputs
This device has more than
one power input. Before
maintenance, ensure that the
upstream switch is OFF.
Warning label for cable
connection
Do not connect a
three-phase input power
cable to a single-phase input
switch. Do not connect a
single-phase input power
cable to a three-phase input
switch. Otherwise, the
device will be damaged.
Warning label for surge
protection module
operation
Do not remove or install an
energized surge protection
module.