Huawei SUN2000L-5KTL Quick Manual page 4

4
Verifying the Installation
No. Acceptance Criteria
1 The SUN2000L is installed correctly and securely.
2 The WiFi antenna is installed correctly and securely.
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 and securely.
The DC switch and all the switches connecting to the SUN2000L
6
are OFF.
The AC output power cable, DC input power cable, battery
7
cable, and signal cable are connected correctly and securely.
8 Unused terminals and ports are locked by watertight caps.
The installation space is proper, and the installation environment
9
is clean and tidy, without foreign matter.
Customer Service Contact Information
Region Country Service Support Mailbox
Europe All countries eu_inverter_support@huawei.com
Australia au_inverter_support@huawei.com
Asia Pacific
Other
MYEnterprise_TAC@huawei.com
countries
Japan and Japan and
Japan_ESC@ms.huawei.com
Korea Korea
China China solarservice@huawei.com
India India in_inverter_support@huawei.com
The United
North America States and na_inverter_support@huawei.com
Canada
Latin America All countries la_inverter_support@huawei.com
The Middle
East and All countries mea_inverter_support@huawei.com
Africa
Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang
Shenzhen 518129 People's Republic of China
solar.huawei.com
No. Label Definition
RS485B, RS485 differential
1 485B1
signal–
RS485B, RS485 differential
3 485B2
signal–
5 EN– Enable signal–
7 N/A N/A
No. Label Definition
1 ALARM– Alarm signal–
RS485B, RS485 differential
3 485B3
signal– (reserved)
Negative of the 12 V power
5 12V–
supply (reserved, power ≤ 3 W)
7 N/A N/A
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.

After turning on the AC switch, turn on the DC switch within 1 minute. Otherwise, the
SUN2000L will start to export power to the power grid. If you turn on the DC switch in this
case, the SUN2000L will shut down first, and then restart to export power to the power grid.
1. If a battery connects to the battery terminals, turn on the power switch on the battery, and then
turn on the battery switch.
2. Turn on the AC switch between the SUN2000L and the power grid.
3. Turn on the DC switch between the PV string and the SUN2000L if there is any.
4. Turn on the DC switch at the bottom of the SUN2000L.
5. Perform quick setting over the app by referring to the SUN2000L App Quick Guide.
6. (Optional) Measure the temperatures at the joints between the DC terminals and the
connectors using a point-test thermometer.
Under normal operation conditions of the SUN2000L, the temperature rise at DC
connectors should remain below 30°C at all time.
7. Observe the LEDs to check the SUN2000L operating status.
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)
Running LED1
indication
Steady green
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
Off
4
COM Port Pin Definitions
No. Label Definition
RS485A, RS485 differential
2 485A1
signal+
RS485A, RS485 differential
4 485A2
signal+
6 EN+ Enable signal+
8 PE
Grounding the shield layer
ALARM Port Pin Definition
No. Label
2 ALARM+ Alarm signal+
4 485A3
6 12V+
8 PE
Meaning
LED2 N/A
Steady green The SUN2000L is
exporting power to the power grid.
Off The DC is on and the AC is off.
Blinking green at The DC is off and the AC is on.
long intervals
Blinking green at Both the DC and AC are on, and the
long intervals SUN2000L is not exporting power to the
power grid.
Off Both the DC and AC are 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
Definition
RS485B, RS485 differential
signal– (reserved)
Positive of the 12 V power
supply (reserved, power ≤ 3 W)
Grounding the shield layer