Connect Reduxi with Huawei SUN2000B C&I via Modbus TCP, enabling dynamic tariff management, reducing energy costs, and unlocking earnings through energy market arbitrage.
1.Huawei SUN2000B C&I elements for connection
Link for user manual of inverter system SUN2000-(50K, 75K, 80K, 150K)-MG:
https://support.huawei.com/enterprise/en/doc/EDOC1100278228
Link for user manual of battery system PCS2000MA:
https://support.huawei.com/enterprise/en/fusionsolar/pcs2000ma-pid-255740923
Link for user for smartmeter DTSU666-H:
https://solar.huawei.com/en/professionals/all-products/DTSU666-H-100A
2. Huawei SUN2000B C&I connection and Modbus TCP/IP Activation and IP obtaining
2.1 Connect to Huawei SUN2000B smartlogger
All the configuration and commissioning are done through the Huawei SUN2000B smart logger, so connecting to it is crucial for the additional steps described below.
An exact description of how to connect to the Huawei SUN2000B smart logger is available on the link:
2.2 Activation is executed in menu Setting/Modbus TCP:
The communication protocol for data transmission in the case of Reduxi and Huawei SUN2000B C&I is Modbus TCP/IP, which must be activated in the Enspire power system Huawei application.
- Modbus TCP/IP settings, where you set:
- Link settings. Enable,
- Address mode: Logical address (must be set to logical!)
- Logger address: set the SmartLogger logic address,
- Fast scheduling: Disable.
2.3 IP of Huawei SUN2000B Logger is obtained in menu Setting/Wired or Wireless network:
3. Huawei SUN2000B Smart Logger Modbus ID for all elements connected
All Modbus IDs (Modus address) essential for configuration in the Reduxi System regarding point 4.3 are obtained in the Enspire application under Maintenance/Device List:
3.1 C&I PCS2000MA battery system PCS and ESS Modbus IDs (extra explanation for battery system)
Since the battery system consists of two parts, controlling and monitoring, two different Modbus ID addresses exist, both addresses are obtained in the FusionSolar app under the Home/Device Management, image below:
For the PCS address choose your PCS element and click Configuration:
For the PCS address choose your ESS element and click Configuration:
4. Special appendix for control with the Reduxi system (important!)
Huawei Logger offers the option to independently control and adjust working operations for each connected inverter. Since the Reduy system takes control of inverters, those two things might be in conflict. In this case, it is necessary to disable the Logger control. This is done in the following two steps.
4.1 Under Logger Settings/Active Power Control
Schedule strategy must be set to Disable:
Schedule strategy must be set to NO-Limit:
This example shows Wrong settings!!!
5. Adding a new device (Huawei SmartLogger 3000/5000)
With a Huawei SmartLogger 3000 or 5000, you add the SmartLogger once. You do not need to add individual Huawei SUN2000 inverters. All data is obtained from the SmartLogger itself, and PV is controlled with the combined PV power.
5.1 Add new device
In the Reduxi Configurator, press the Add device button.
5.2 Basic settings
Select:
- Device type: Hybrid inverter
- Type: Huawei SmartLogger3000 or Huawei SmartLogger5000
- Name: a name of your choice
Press Next.
5.3 Communication channel and device configuration
- Connection: TCP/IP
- IP: SmartLogger IP address
- Port: 502
- Modbus unit ID: logic address of the SmartLogger
- Control PV through the logger? Yes
5.4 Test and save
Press Test communication. If the connection works, the readout from the SmartLogger is shown. Then press Done to save the device.
If the test fails, check the IP address, port and Modbus unit ID.
6. Readings from Device
The purpose of this point is to show how to check readings from the newly added device. This is done under 'Device/Last measurement'.
For advanced control of individual elements connected to SmartLogger2000B, integrated elements must be added to the strategy of the Reduxi system.
For example, the control type of the Huawei LUNA2000B must be set to AUTO. This setting can be configured under Devices > Huawei LUNA2000B in the Reduxi Configurator.
When the device is set to AUTO, commands from the strategy can be executed. Otherwise, the control becomes obsolete.
To achieve maximal flexibility and energy cost reduction with respect to dynamic price and dynamic tariffs please follow the instructions on how to define strategy at this link: Strategies for Reduxi controller.
After successfully adding the device, it can be monitored and controlled also via the Reduxi application.