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SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL) User Manual

This document describes the SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL) in terms of their installation, electrical connections, commissioning, maintenance, and troubleshooting.
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Communication Mode Description

Communication Mode Description

RS485 Communication

The SUN2000 can connect to the SmartLogger or to a PC through the SmartLogger to implement RS485 communication. You can use the SUN2000 APP, embedded WebUI, or the network management software (such as the NetEco) on the PC to query information about the SUN2000, such as energy yield, alarms, and running status.

  • Figure 5-24 shows the communication mode for a single SUN2000.
    Figure 5-24  Communication mode for a single SUN2000
  • Figure 5-25 shows the communication mode for multiple SUN2000s.

    If multiple SUN2000s are used, connect all the SUN2000s in daisy chain mode over an RS485 communications cable.

    Figure 5-25  Communication mode for multiple SUN2000s
    • The RS485 communication distance between the SUN2000 at the end of the daisy chain and the SmartLogger cannot exceed 1000 meters.
    • If multiple SUN2000s need to communicate with one another and are connected to a PC over the SmartLogger1000, a maximum of three daisy chains can be configured.
    • If multiple SUN2000s need to communicate with one another and are connected to a PC over the SmartLogger2000, a maximum of six daisy chains can be configured.
    • To ensure the system response speed, it is recommended that the number of devices on each daisy chain be less than 30.

MBUS (PLC) Communication

The MBUS (PLC) communication board loads communication signals onto power cables for transmission.


The built-in MBUS (PLC) module in the SUN2000 does not need to be connected with cables.

FE Communication (Optional)

FE communication is mainly used in distributed rooftop scenarios with a small number of inverters. The inverter can directly connect to the PC over the Ethernet to implement monitoring networking.

  • FE communication is optional for the SUN2000-36KTL.
  • If the SUN2000-36KTL adopts FE communications mode, it supports only RS485 and FE communications modes, and does not support MBUS (PLC) communications mode.
  • If FE communication is used, a maximum of 10 SUN2000s can be connected. In addition, the network management software (such as the NetEco) needs to be installed on the PC for monitoring networking.

If FE communication is used, set Ethernet and Management system for the SUN2000 on the SUN2000 APP.

  • For operations with the SUN2000 APP, see the SUN2000 APP User Manual.
  • For operations with the NMS, see the iManager NetEco 1000S User Manual (iManager NetEco 1000S V100R002C20 and later).

Selecting a Communication Mode

The RS485 and MBUS (PLC) communication modes are mutually exclusive.

  • If the MBUS (PLC) communication mode is selected, do not connect the RS485 communications cable. In addition, you need to set MBUS communication to Enable on the SUN2000 APP.

    The MBUS (PLC) communication mode is only applicable to medium-voltage grid connection scenarios and non-low-voltage public grid connection scenarios (industrial environment).

  • If the RS485 communication mode is selected, you are recommended to set MBUS communication to Disable on the SUN2000 APP.

MBUS communication is set to Enable by default.

Updated: 2019-08-02

Document ID: EDOC1100019925

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