Huawei SUN2000-50KTL-JPM0 - Installing the RS485 Communications Cable

SUN2000-(50KTL-JPM0, 50KTL-JPM1, 63KTL-JPM0)
User Manual
5 Electrical Connections
Issue 01 (2018-09-30)
Copyright © Huawei Technologies Co., Ltd.
47
Figure 5-18 Communication mode for a single SUN2000

Figure 5-19 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 5-19 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.
5.6.2 Installing the RS485 Communications Cable
Selecting an Installation Mode
An RS485 communications cable can be connected in two ways:

Terminal block connection
Recommended: Communications cable with a conductor cross-sectional area of 1 mm
2
and a cable outer diameter of 14–18 mm.

RJ45 network port connection