When routing the signal cable, ensure that it is separate from the power cable and away
from interfering sources to prevent communication from being affected.
1. Communication port signal definitions
COM port definition:
2. Communication Networking
NOTE
The smart power sensor and Smart Dongle must be connected to the same SUN2000.
2.1 Single SUN2000 scenarios
Connecting cables to the smart power sensor (single SUN2000)
2.2 SUN2000 cascading scenarios
2.2.1 In phase grid connection:
Connecting cables to the smart power sensor (In phase grid connection):
2.2.2 Balanced three-phase grid connection
Connecting cables to the smart power sensor (balanced three-phase grid connection)
Note:
- In cascading scenarios, the inverters are required to connect to the management system through a Smart Dongle.
- In the preceding networking, the SUN2000s are cascaded and support the grid-tied point control function to achieve zero export.
- If the SUN2000s requires the grid-tied point control function, they need to be connected to a smart power sensor.
- In the scenario of balanced three-phase grid connection, if the SUN2000s requires the grid-tied point control function, they need to be connected to a three-phase smart power sensor to control the total three-phase power.
- Only one LG battery is supported, and the LG battery must be connected to the inverter installed with the Smart Dongle.
Procedure
Step 1: Connect signal cables to corresponding signal connectors.
Notice
● Ensure that the protection layer of the cable is in the connector. The surplus core should be cut off from the protection layer.
● Ensure that the exposed core is totally inserted into the cable hole.
● Ensure that the signal cables are connected securely.
● Ensure that the cables are not twisted.
● If multiple signal cables need to be connected to a single connector, ensure that the outer diameters of the signal cables are the same.
- Crimping two signal cables:
- Crimping three signal cables
- Assembling a signal connector (single SUN2000):
- Assembling a signal connector (SUN2000 cascading):
Step 2: Connect the signal connector to the corresponding port.
Notice
Ensure that the signal connector is connected securely.
