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3.5
(Optional) Installing the RS485 Communications Cable
No.
Label
Definition
RS485B, RS485 differential
1
485B1
signal–
RS485B, RS485 differential
3
485B2
signal–
Negative of the 12 V power
5
12V–
supply (reserved, power ≤ 3 W)
7
N/A
N/A
4
Verifying the Installation
No.
Acceptance Criteria
1
The SUN2000L is installed correctly, securely, and reliably.
The WiFi antenna or 4G module is installed correctly, securely,
2
and reliably.
3
Cables are routed properly as required by the customer.
4
Cable ties are secured evenly and no burr exists.
5
The ground cable is connected correctly, securely, and reliably.
The DC switch and all the switches connecting to the
6
SUN2000L are OFF.
The AC output power cable, DC input power cable, and signal
7
cable are connected correctly, securely, and reliably.
8
Unused terminals and ports are locked by watertight caps.
The installation space is proper, and the installation
9
environment is clean and tidy, without foreign matter.
Customer Service Contact Information
Region
Country
China
China
India
India
Japan and
Japan and Korea
South Korea
Europe
All countries
The United
North America
States and
Canada
Latin America
All countries
Australia
Asia Pacific
Other countries MYEnterprise_TAC@huawei.com
The Middle East
All countries
and Africa
Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang
Shenzhen 518129 People's Republic of China
solar.huawei.com
No.
Label
2
485A1
4
485A2
6
12V+
8
PE
Service Support Mailbox
solarservice@huawei.com
in_inverter_support@huawei.com
E-Support.JP@ms.huawei.com
eu_inverter_support@huawei.com
na_inverter_support@huawei.com
la_inverter_support@huawei.com
au_inverter_support@huawei.com
mea_inverter_support@huawei.com
Definition
RS485A, RS485 differential
signal+
RS485A, RS485 differential
signal+
Positive of the 12 V power
supply (reserved, power ≤ 3 W)
Grounding the shield layer
5
Powering On the System
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.
1. Turn on the AC switch between the SUN2000L and the power grid.
2. Turn on the DC switch between the PV string and the SUN2000L if there
is any.
3. Turn on the DC switch at the bottom of the SUN2000L.
4. Perform quick setting over the app by referring to the SUN2000L App
Quick Guide.
5. (Optional) Measure the temperatures at the joints between the DC
terminals and the connectors using a point-test thermometer.
NOTE
Under normal operation conditions of the SUN2000L, the temperature
rise at DC connectors should remain below 40°C at all time.
6. Observe the LEDs to check the SUN2000L operating status.
Status (Blinking at Long
Intervals: On for 1s and then
Type
Off for 1s; Blinking at Short
Intervals: On for 0.2s and then
Off for 0.2s)
Running
LED1
indication
Steady green
LED1 LED2
Blinking green
at long intervals
Off
Blinking green
at long intervals
Off
Steady red
Communication
LED3
indication
Blinking green at short intervals
Blinking green at long intervals
LED3
Off
7. If a 4G module is installed, wait for about 15 seconds for dialup after the
inverter is powered on. Then observe the LED indicator on the 4G
module to check the module status.
Status
Blinking: The period is 2s. The LED is on for
0.1s, then off for 0.1s, then on for 0.1s, and
finally off for 1.7s.
Blinking: The period is 2s. The LED is on for
0.1s and then off for 1.9s.
Steady on
4
NOTICE
When laying out communications
cables, separate them from power
cables to avoid strong signal
interference sources.
Ensure that the exposed core wire is
totally inserted into the cable hole and
connected securely.
If only one signal cable needs to
be connected, block the unused
cable hole on the seal using a
cap and tighten the cable gland.
If two signal cables are required,
ensure that they have the same
outer diameter.
Meaning
LED2
N/A
The SUN2000L is
Steady green
exporting power to the power
grid.
Off
The DC is on and the AC is off.
Blinking green
The DC is off and the AC is on.
at long intervals
The DC is on and the AC is on.
Blinking green
The SUN2000L is not exporting
at long intervals
power to the power grid.
The DC is off and the AC is off
Off
or the SUN2000L is in low
power consumption mode.
Steady red
The SUN2000L is faulty.
N/A
The SUN2000L is in
communication.
The SUN2000L has connected
to the mobile phone.
No communication
Meaning
No service is provided or the service
is limited.
The SUN2000L has connected to the
network.
The SUN2000L is in communication.
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