Huawei SUN2000L-2KTL User manual

SUN2000L-(2KTL–5KTL), SUN2000-(2KTL–5KTL)-
L0, and SUN2000L-(3KTL-5KTL)-CN Replacement
Quick Guide
Issue: 02
Part Number: 31500GCH
Date: 2022-01-18
HUAWEI TECHNOLOGIES CO., LTD.

1Copyright © Huawei Technologies Co., Ltd. 2022.
All rights reserved.
1. 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.
2. Before replacing the device, carefully read the SUN2000-(2KTL–6KTL)-L1 User
Manual to get familiar with product information and precautions. You can
download this document by scanning the QR code.
1SUN2000L-(2KTL–5KTL) Replacement Scenario
Remove SUN2000L-
(2KTL–5KTL). Install SUN2000- (2KTL–6KTL)-L1. Install the PE cable.
•Before removing the original SUN2000, ensure that the DC switch on the SUN2000 and all
the switches connected to the SUN2000 are set to OFF. Otherwise, the high voltage of the
SUN2000 may result in electric shocks.
•After the SUN2000 is powered off, the remaining electricity and heat may still cause electric
shocks and body burns. Therefore, put on protective gloves and dielectric boots and begin
operating the SUN2000 with specialized insulation tools five minutes after the power-off.
1. Power off the SUN2000 to be replaced.
2. Remove the AC connector and remove the AC output power cable from the mating socket for
future use.
Removing SUN2000L-(2KTL–5KTL)
1.1
Removing Cables from SUN2000L-(2KTL–5KTL) for Future Use
Install the
AC output
power cable.
Install DC
input power
cables.
Install the WLAN
antenna and
signal cables.
Check the installation
and power on the
SUN2000.
Commission
SUN2000-(2KTL–
6KTL)-L1.
Start
End
AC output port (AC)
3. Before replacing the device, check whether the configurations of SUN2000L-(2KTL–5KTL),
SUN2000-(2KTL–5KTL)-L0, and SUN2000L-(3KTL-5KTL)-CN can be viewed. If they can be
viewed, record the parameter settings for setting or checking parameters after the
replacement.
4. Before replacing the device, check whether the cables are long enough. If not, prepare
appropriate cables.

2
3. Remove the DC connectors and use a cable cutter to cut off the terminals of DC input power
cables. Set the cables aside for future use.
•The DC terminals of SUN2000L-(2KTL–5KTL) must be cut off. If the DC connectors of
SUN2000L-(2KTL–5KTL) are directly connected to SUN2000-(2KTL–6KTL)-L1, the SUN2000
may be burnt.
•If the SUN2000 is connected to a smart PV safety box, cut off the DC terminal connected to
the PV port on the SUN2000 and do not cut other DC terminals. Put the cables aside for
future use.
Cable
cutter
DC input terminals
COM port
•The method for removing battery connectors is the same as that for removing the DC
connectors.
•The battery terminals of SUN2000L-(2KTL–5KTL) must be cut off. If the battery connectors of
SUN2000L-(2KTL–5KTL) are directly connected to SUN2000-(2KTL–6KTL)-L1, the SUN2000
may be burnt.
Battery terminals (BAT+/BAT–)
5. (Optional) Remove the signal cable connectors from the COM and ALARM ports, and take
out the signal cables for future use.
If the SUN2000 is connected to a smart PV safety box, cut off the crimping terminal of the signal
cables and strip the cables for future use.
4. (Optional) Remove the battery connectors, cut off the terminals with a cable cutter, and put
the cables aside for future use.
ALARM port
Cable
cutter

3
1. (Optional) Open the anti-theft lock.
3. Remove the SUN2000 from the rear panel.
6. Disconnect the PE cable and remove the crimped OT terminal. Set the cable aside for future
use.
Removing the Mounting Bracket of SUN2000L-(2KTL-5KTL)
2. Remove the two hex screws.

4
Installing SUN2000-(2KTL–6KTL)-L11.2
•The marking-off template, mounting bracket, and M6x60 expansion bolts delivered with
SUN2000-(2KTL–6KTL)-L1 are not used during replacement.
•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.
(Optional) Install an anti-theft lock.
2. Remove the native hanging kit from
SUN2000-(2KTL–6KTL)-L1.
3. Install the hanging kit delivered with
SUN2000-(2KTL–6KTL)-L1.
4. Install the SUN2000 on the
mounting bracket.
5. Tighten screw assemblies.
Not used
1. (Optional) Install the locking
screw for the DC switch.

5
Installing the AC Output Power Cable to SUN2000-(2KTL–6KTL)-L1
1.4
•It is recommended that silica gel or paint be applied around the ground terminal after the PE
cable is connected.
•It is recommended that you connect the PE cable to the right ground point and reserve the
other ground point.
Installing the PE Cable for SUN2000-(2KTL–6KTL)-L1
1.3
Before connecting cables, ensure that the DC switch on the SUN2000 and all the switches
connected to the SUN2000 are set to OFF. Otherwise, the high voltage of the SUN2000 may
result in electric shocks.
Ground
point
AC output port (AC)

6
Installing DC Input Power Cables for SUN2000-(2KTL–6KTL)-L1
1.5
1. Assemble DC connectors.
Click
Positive metal terminal
Negative metal terminal
Ensure that the cables
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. Install the DC input power cables.
If the original DC input power cables are not long enough, add DC input extension cables.
1. Ensure that the PV module output is well insulated to ground.
2. Use the positive and negative Staubli MC4 metal terminals and DC connectors supplied with
the SUN2000. 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 the maximum input voltage under any
circumstance.
4. Before installing DC input power cables, label the cable polarities to ensure correct cable
connections.
5. If the polarities of the DC input power cables are reversed, do not operate the DC switch or
the positive/negative connector immediately. Failing to do so may cause device damage,
which is not covered under 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 OFF, remove the
positive and negative connectors, and correct the polarities of the DC input power cables.

7
Click
Pull the DC input power cables back to
ensure that they are connected securely.
Extension cables for DC terminals
(Optional) Installing Battery Cables for SUN2000-(2KTL–6KTL)-L1
1.6
Assemble the positive and negative connectors by following the instructions in section 1.5
"Installing DC Input Power Cables."
Battery terminals (BAT+/BAT–)
Click
Pull the battery cables back to ensure
that it is connected securely.
Extension cables for battery terminals
Ensure that the WLAN
antenna is installed
securely.
Installing a WLAN Antenna
1.7
Antenna port (ANT)

8
(Optional) Installing Signal Cables for SUN2000-(2KTL–6KTL)-L1
1.8
COM port (COM)
No. Label Definition Description
1 485B1 RS485B, RS485 differential signal–Connects to the RS485 signal port of the
smart power sensors.
2 485A1 RS485A, RS485 differential signal+
3 485B2 RS485B, RS485 differential signal–Connects to the RS485 signal port of
batteries.
4 485A2 RS485A, RS485 differential signal+
5EN–Enable signal–Connects to the enable signal port of
batteries.
6EN+ Enable signal+
7 - - -
8PE Ground Connects to the shielding layer of cables.
ALARM port (ALARM)
No. Label Definition Description
1 ALARM- Alarm signal–Connects to the power port of the alarm
beacon.
2 ALARM+ Alarm signal+
3 485B3 RS485B, RS485 differential signal–Connects to the RS485 signal port of
smart PV safety boxes.
4 485A3 RS485A, RS485 differential signal+
512V–Negative electrode of the 12 V
power supply port
Connects to the power port of smart PV
safety boxes.
612V+ Positive electrode of the 12 V
power supply port
7 - - -
8PE Ground point on the shield layer Connects to the shielding layer of cables.
Ensure that the protective layer of the cable is inside the connector, cut off excess core wires
from the protection layer, totally insert the exposed core wire into the cable hole, and securely
connect the cable.
COM Port Pin Definitions
1. Communications port pin definitions of SUN2000L–(2KTL–5KTL)
ALARM Port Pin Definitions

9
No.
Label
Definition
Description
1
-
-
-
2
-
-
-
3
485B2
RS485B, RS485
differential signal
–
Connects to the RS485
–signal port of batteries, smart power
sensors, and smart PV safety boxes. When batteries, smart
power sensors, and smart PV safety boxes coexist, they share
the 485B2
–ports.
4
485A2
RS485A, RS485
differential signal+
Connects to the RS485+ signal port of batteries, smart power
sensors, and smart PV safety boxes. When batteries, smart
power sensors, and smart PV safety boxes coexist, they share
the 485A2+ ports.
5
GND
Enable signal
–/12V–
Connects to the enable signal
GND of batteries and the 12 V
GND
of smart PV safety boxes.
6
EN+
Enable signal+/12V+
Connects to the enable signal positive electrode of batteries
and the 12 V positive electrode of smart PV safety boxes.
7
-
-
-
8
-
-
-
Crimping Two Signal Cables
2. Connect the signal cables to SUN2000-(2KTL–6KTL)-L1.
COM Port Pin Definitions
Crimping Three Signal Cables