Huawei SUN2000-M2 User manual

SUN2000-(8KTL-20KTL)-M2
Quick Guide
HUAWEI TECHNOLOGIES CO., LTD.
Issue: 06
Part Number: 31500BCA
Date: 2021-06-25

1
1Product Description
Copyright © Huawei Technologies Co., Ltd. 2021. All
rights reserved.
(1) LED
(2) Front panel
(3) Hanging kit
(4) Heat sink
(5) Ventilation valve
(6) Ground screw
(7) AC output port (AC)
(8) Communications port (COM)
(9) Smart Dongle port (
GPRS/4G/WLAN-FE)
(10) DC input terminals (PV4+/PV4
–)
(11) DC input terminals (PV3+/PV3
–)
(12) DC input terminals (PV2+/PV2
–)
(13) DC input terminals (PV1+/PV1
–)
(14) DC switch (DC SWITCH)
(15)
Screw hole for the DC switch (for Australia only)
2. Before installing the device, read the user manual carefully to get familiar with product
information and safety precautions.
3. Only qualified and trained electrical technicians are allowed to operate the device. Operation
personnel should understand the composition and working principles of the grid-tied PV
power system and local regulations.
4. Before installing the device, check that the package contents are intact and complete against
the packing list. If any damage is found or any component is missing, contact your dealer.
5. Use insulating tools when installing the device. For personal safety, wear proper personal
protective equipment (PPE).
6. Huawei shall not be liable for any consequences caused by the violation of the storage,
transportation, installation, and operation regulations specified in this document and the user
manual.
1. The information in this document is subject to change due to version
upgrades or other reasons. 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. You can download this document
by scanning the QR code.
1Product Description

2
Installation Requirements
2.1
Dimensions
2Installing the Equipment
Two M6 screw holes are reserved on both left and right sides of the inverter for installing an
awning.
SpaceAngle

3
Installing the Inverter
2.2
When drilling holes, avoid the water pipes
and power cables buried in the wall.
1. Install the mounting bracket.
•M6x60 expansion bolts are delivered with the inverter. If the length and number of the bolts
do not meet installation requirements, prepare M6 stainless steel expansion bolts by yourself.
•The expansion bolts delivered with the inverter are used for solid concrete walls. For other
types of walls, prepare bolts by yourself and ensure that the wall meets the load bearing
requirements of the inverter.
•Loosen the nuts, flat washers, and spring washers of the two expansion bolts.
Moving an Inverter
Level
2. (Optional) Install the screw for locking the DC switch.
•The screws for DC switches are delivered with solar inverters. According to Australian
standards, the screws are used to secure DC switches (DC SWITCH) to prevent them from
being turned on by mistake.
•For the model used in Australia, perform this step to meet the local standards.

4
No.
Item
Type
Specifications
1
PE cable
Single
-core
outdoor copper
cable
Conductor cross
-sectional area:
•
≥ 6 mm2(SUN2000-8KTL-M2/SUN2000-
10KTL-M2/SUN2000-12KTL-M2)
•
≥ 10 mm2(SUN2000-15KTL-M2/SUN2000-
17KTL-M2/SUN2000-20KTL-M2)
2
AC output power cable
Outdoor copper
cable
Conductor cross
-sectional area:
•
6–16 mm2(SUN2000-8KTL-M2/SUN2000-
10KTL-M2/SUN2000-12KTL-M2)
•
10–16 mm2(SUN2000-15KTL-M2/SUN2000
-
17KTL-M2/SUN2000-20KTL-M2)
Cable outer diameter: 11
–26 mm
3
DC input power cable
Standard outdoor
PV cable in the
industry
•
Conductor cross-sectional area: 4–6 mm2
•
Cable outer diameter: 5.5–9 mm
4
(Optional) RS485
communications cable
Two
-
core outdoor
shielded twisted
pair cable
•
Conductor cross-sectional area: 0.2–1 mm2
(0.5 mm2is recommended)
•
Cable outer diameter: 4–11 mm
5
(Optional) RS485
p
ower meter signal
cable
6
(Optional) Rapid
shutdown switch signal
cable
7
(Optional) Grid
scheduling signal cable
Five
-
core outdoor
cable
•Connect cables in accordance with the local installation laws and regulations.
•Before connecting cables, ensure that the DC switch on the inverter and all the switches
connecting to the inverter are set to OFF. Otherwise, the high voltage of the inverter may
result in electric shocks.
Preparing for Installation
3.1
3Electrical Connections
Prepare an anti-theft lock suitable for the lock hole diameter (Ф8 mm) and ensure that the lock
can be installed successfully. An outdoor waterproof lock is recommended.
3. Install the inverter on the mounting bracket. 4. (Optional) Install an anti-theft lock.

5
Installing the PE Cable
3.2
Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks may
occur.
•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.
•It is recommended that silica gel or paint be used around the ground terminal after the PE
cable is connected.
Installing the AC Output Power Cable
3.3
•Ensure that the protection layer of the AC output power cable is inside the connector, the
core wires are totally inserted into the cable hole, and the cable is connected securely. Failing
to do so may cause device malfunction or damage.
•The hex key is delivered with the inverter and bound to the hanging kit at the bottom of the
inverter.
Hanging kit
Hex key
1. Connect the AC output power cable to the AC connector.
Stripping requirements
Hex key

6
Five-Core Cable (L1, L2, L3, N, and PE)
Click
2. Connect the AC connector to the AC output port.
AC output port (AC)
3. Check the route of the AC output power cable.
•This section describes how to connect a five-core AC output power cable to an AC connector.
•A three-core AC output power cable can be connected similarly. The three-core cable (L1, L2,
and L3) is not connected to the neutral wire or PE wire.
•A four-core or five-core AC output power cable can be connected similarly. The four-core
cable (L1, L2, L3, and PE) is not connected to the N wire, and the four-core cable (L1, L2, L3,
and N) is not connected to the PE wire.

7
Installing the DC Input Power Cable
3.4
1. Ensure that the PV module output is well insulated to ground.
2. Use the Staubli MC4 positive and negative metal terminals and DC connectors supplied with
the solar inverter. Using incompatible positive and negative metal terminals and DC
connectors may result in serious consequences. The caused device damage is not covered
under warranty.
3. The DC input voltage of the SUN2000 shall not exceed 1080 V DC under any circumstance.
4. Before installing the DC input power cable, label the cable polarities to ensure correct cable
connections.
5. If the DC input power cable is reversely connected, do not operate the DC switch as well as
positive and negative connectors immediately. Failing to do so may cause device damage,
which is not covered under any warranty. Wait until the night when solar irradiance declines
and the PV string current drops to below 0.5 A. Then set the DC switch to the OFF position,
remove the positive and negative connectors, and correct the polarities of the DC input
power cable.
1. Assemble DC connectors.
Click
Positive metal terminal
Negative metal terminal Ensure that the cable cannot
be pulled out after being
crimped.
Positive connector
Negative
connector
Use the wrench
shown in the figure
to tighten the locking
nut. When the
wrench slips during
the tightening, the
locking nut has been
tightened.
Ensure that cable
polarities are correct.
PV-CZM-22100/19100 (Staubli)
PV-MS-HZ
Open-end Wrench
(Staubli)
DC input terminals
2. Connect DC input power cables.

8
Click
Pull the DC input power cable
back to ensure that it is
connected securely.
Smart Dongle port (GPRS/4G/WLAN-FE)
(Optional) Installing the Smart Dongle
3.5
•If WLAN-FE communication is used, install a WLAN-FE Smart Dongle (SDongleA-05).
•If 4G communication is used, install a 4G Smart Dongle (SDongleA-03).
•You need to purchase the Smart Dongle by yourself.
WLAN-FE Smart Dongle (FE Communication)
You are advised to use a CAT 5E outdoor shielded network cable (outer diameter < 9 mm; internal
resistance ≤ 1.5 Ω/10 m) and shielded RJ45 connectors.
GPRS/4G/WLAN-FE

9
•If your Smart Dongle is not equipped with a SIM card, prepare a standard SIM card (size: 25
mm x 15 mm) with the capacity greater than or equal to 64 KB.
•Install the SIM card in the arrow direction.
•When reinstalling the cover of the Smart Dongle, ensure that the buckle springs back in
place (you can hear a click).
4G Smart Dongle (4G Communication)
•For details about how to operate the WLAN-FE Smart Dongle SDongleA-05, see
SDongleA-05
Quick Guide (WLAN-FE) .
•For details about how to operate the 4G Smart Dongle SDongleA-03, see
SDongleA-03 Quick
Guide (4G) .
•The quick guide is delivered with the Smart Dongle. You can download them by scanning the
QR code below.
WLAN-FE 4G

10
Communications Port Pin Definition
Pin
Definition
Function
Description
Pin
Definition
Function
Description
1
485A1
-1
RS485
differentia
l signal+
Used to cascade
inverters or connect
to the RS485 signal
port on the
SmartLogger
2
485A1
-2
RS485
differential
signal+
Used to cascade
inverters
or
connect to the
RS485 signal port
on the
SmartLogger
3
485B1
-1
RS485
differentia
l signal
–
4
485B1
-2
RS485
differential
signal
–
5
PE
Shielding
ground
N/A
6
PE
Shielding
ground
N/A
7
485A2
RS485
differentia
l signal+
Used to connect to
an RS485 signal
port on a Smart
Power Sensor for
export limitation
8
DIN1
Dry contact
interface for
grid
scheduling
N/A
9
485B2
RS485
differentia
l signal
–
10
DIN2
11
N/A
N/A
N/A
12
DIN3
13
GND
GND
Used to connect to
the rapid shutdown
DI signal port or
serve as a port for
the signal cable of
the NS protection.
14
DIN4
15
DIN5
Rapid
shutdown
signal+
16
GND
(Optional) Installing the Signal Cable
3.6
•Not all inverter models are delivered with the signal cable connector.
•When laying out the signal cable, separate it from the power cable and keep it away from
strong interference sources to avoid strong communication interference.
•Ensure that the protection layer of the cable is inside the connector, surplus core wires are cut
off from the protection layer, the exposed core wire is totally inserted into the cable hole, and
that the cable is connected securely.
•If the Smart Dongle is configured, you are advised to install the Smart Dongle before
connecting the signal cable.

11
•In the SmartLogger networking scenario, the Smart Dongle cannot be connected.
•A maximum of 80 devices can connect to a single SmartLogger, such as inverters, Smart
Power sensor, and EMI. You are advised to connect fewer than 30 devices to each RS485 route.
•The Smart Power Sensor is necessary for export limitation. Select the Smart Power Sensor
according to the actual project.
•To ensure the system response speed, the Smart Power Sensor is recommended to be
connected to a COM port separately from inverter COM port.
Smart Dongle Networking Scenario
•In the Smart Dongle networking scenario, the SmartLogger cannot be connected.
•The Smart Power Sensor is necessary for export limitation. Only the DTSU666-H Smart
Power Sensor (provided by Huawei) can be used.
SmartLogger Networking Scenario

12
1. Connect the signal cable to the signal cable connector.
(Optional) Installing the RS485 Communications Cable (Inverter Cascading)
2. Connect the signal cable connector to the communication port.
Communications port (COM)

13
(Optional) Installing the Smart Power Sensor Signal Cable
1. Connect the signal cable to the signal cable connector.
2. Connect the signal cable connector to the communication port.
Communications port (COM)

14
1. Connect the signal cable to the signal cable connector.
(Optional) Installing the Grid Scheduling Dry Contact Signal Cable
2. Connect the signal cable connector to the Communication port.
Communications port (COM)

15
No.
Acceptance Criteria
1
The inverter is installed correctly and securely.
2
Cables are routed properly as required by the customer.
3
The Smart Dongle is installed correctly and securely.
4
Cable ties are evenly distributed and no burr exists.
5
The PE cable is connected correctly, securely, and reliably.
6
The DC switch and all the switches connected to the inverter are set to the OFF position.
7
The AC output power cable, DC input power cable, and signal cable are connected
correctly, securely, and reliably.
8
Unused terminals and ports are locked by watertight caps.
9
The installation space is proper, and the installation environment is clean and tidy.
4Verifying Installation
1. Turn on the AC switch between the inverter and the power grid.
2. (Optional) Remove the screw for locking the DC switch.
3. If there is a DC switch between the PV string and the inverter, turn on the DC switch.
4. Turn on the DC switch at the bottom of the inverter.
Before turning on the AC switch between the inverter and the power grid, use a multimeter set
to the AC position to check that the AC voltage is within the specified range.
5Powering On the System

16
5. Observe the LEDs to check the operating status of the inverter.
Type
Status
(
Blinking at long intervals: On
for 1s and then Off for 1s; Blinking
at short Intervals: On for 0.2s and
then Off for 0.2s
)
Meaning
Running
indication
N/A
Steady green
Steady green
The solar inverter is operating in grid
-
tied
mode.
Blinking green
at long
intervals
Off
The DC is on and the AC is off.
Blinking green
at long
intervals
Blinking green at
long intervals
Both the DC and AC are on, and the solar
inverter is not exporting power to the
power grid.
Off
Blinking green at
long intervals
The DC is off and the AC is on.
Off
Off
Both the DC and AC are off.
Blinking red at
short intervals
N/A
There is a DC environmental alarm, such
as an alarm indicating that
High String
Input Voltage
, String Reverse Connection,
or
Low Insulation Resistance.
N/A
Blinking red at
short intervals
There is an AC environmental alarm, such
as an alarm indicating
Grid Undervoltage
,
Grid Overvoltage, Grid
Overfrequency, or
Grid
Underfrequency.
Steady red
Steady red
Fault
.
Communication
indication
N/A
Blinking green at short intervals
Communication is in progress.
Blinking green at long intervals
A mobile phone is connected to the solar
inverter.
Off
There is no communication.
Device
replacement
indication
N/A
Steady red
Steady red
Steady red
The solar inverter hardware is faulty. The
solar inverter needs to be replaced.

17
6. (Optional) Observe the LED to check the operating status of the Smart Dongle.
LED
LED
Description
Color
Status
Yellow (blinking
green and red
simultaneously)
Steady on
The Dongle is secured and
powered on.
Red
Blinking at short
intervals (on for 0.2s
and then off for 0.2s)
The parameters for connecting
to the router are to be set.
Green
Blinking at long
intervals (on for 0.5s
and then off for 0.5s)
Connecting to the router
Green
Steady on
Successfully connected to the
management system.
Green
Blinking at short
intervals (on for 0.2s
and then off for 0.2s)
The inverter is communicating
with the management system
through the Dongle.
WLAN-FE Smart Dongle
LED
LED
Description
Color
Status
Yellow (blinking
green and red
simultaneously)
Steady on
The Dongle is secured and
powered on.
Green
Blinking in a 2
-second
cycle (on for 0.1s and
then off for 1.9s)
Dialing (duration < 1 min)
Green
Blinking at long intervals
(on for 1s and then off
for 1s)
The dial
-up connection is set up
successfully (duration < 30s).
Green
Steady on
Successfully connected to the
management system.
Green
Blinking at short
intervals (on for 0.2s and
then off for 0.2s)
The inverter is communicating
with the management system
through the Dongle.
4G Smart Dongle
6Commissioning
•The screenshots are for reference only. The actual screens may vary.
•Obtain the initial password for connecting to the solar inverter WLAN from the label on the
side of the solar inverter.
•To ensure account security, change the password periodically and keep the new password in
mind. Not changing the password may cause password disclosure. A password left
unchanged for a long period of time may be stolen or cracked. If a password is lost, devices
cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.
•Before maintaining the optimizers and PV strings, turn off the AC switch and set the DC
switch to OFF. Otherwise, the PV strings may be energized, resulting in electric shocks.

18
Downloading the App
6.1
Method 1: Search for FusionSolar on Huawei AppGallery and download the latest installation
package.
Method 2: Access https://solar.huawei.com using the mobile phone browser and download the
latest installation package.
FusionSolar
Method 3: Scan the following QR code and download the latest installation package.
If you already have an installer account, skip this step.
Creating the first installer account will generate a domain named after the company.
(Optional) Registering an Installer Account
6.2

19
To create multiple
installer accounts for a
company, log in to the PV
Monitor app and tap Add
User to create an installer
account.
Installer
xxx
Creating a PV Plant and a Plant Owner
6.3
For details, see the
FusionSolar App Quick Guide .
You can scan the QR code to
download the app.
•If Smart PV Optimizers are configured for PV strings, ensure that the Smart PV Optimizers have
been successfully connected to the solar inverter before performing the operations in this
section.
•The PV strings connecting to the same MPPT route should contain the same number and
model of PV modules or Smart PV optimizers.
•Check that the SN labels of Smart PV Optimizers are correctly attached to the physical layout
template.
•Take and save a photo of the physical layout template. Place the template on a flat surface.
Keep your phone parallel to the template and take a photo in landscape mode. Ensure that the
four positioning points in the corners are in the frame. Ensure that each QR code is attached
within the frame.
•For details about the physical layout of Smart PV Optimizers, see FusionSolar App Quick Guide .
Setting the Physical Layout of Smart PV Optimizers
6.4