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SUN2000-(100KTL, 110KTL, 125KTL) Series User Manual

This document describes the SUN2000-125KTL-M0,SUN2000-110KTL-M0,SUN2000-100KTL-M0,SUN2000-100KTL-M1 and SUN2000-100KTL-INM0 in terms of its installation, electrical connections, commissioning, maintenance, and troubleshooting. BOM number: 01074693, 01074694, 01074695, 01074695-001 and 01074695-002.

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Connecting the RS485 Communications Cable

Connecting the RS485 Communications Cable

Pin Definitions of the Communications Port

Figure 5-24 Communications port

Port

Pin

Definition

Pin

Definition

Description

RS485-1

1

RS485A IN, RS485 differential signal+

2

RS485A OUT, RS485 differential signal+

Used for cascading solar inverters or connecting to devices such as the SmartLogger.

3

RS485B IN, RS485 differential signal–

4

RS485B OUT, RS485 differential signal–

Protection ground

5

PE, shielding ground

6

PE, shielding ground

N/A

RS485-2

7

RS485A, RS485 differential signal+

8

RS485B, RS485 differential signal–

Used for connecting to an RS485 slave device.

Connecting the RS485 Communications Cable

When routing the communications cable, separate it from power cables to prevent communication from being affected. Connect the shield layer to the PE point. This section describes how to connect three communications cables.

Figure 5-25 Connecting RS485 communications cables (4–8 mm four-hole rubber plug)
Figure 5-26 Connecting RS485 communications cables (4–8 mm two-hole or three-hole rubber plug)
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Updated: 2019-12-25

Document ID: EDOC1100087908

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