5. System description
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5. System description
EN
5.7.2 DC connections and DC switch
Fig. 5.8.:
DC connections and DC switch
The DC connections are used for connecting the PV module string(s) to the solar power inverter.
The solar power inverter is equipped with integrated DC switching for disconnecting the DC connections from the DC voltage
of the PV modules.
The maximum input current is 17.5 A for each DC connection on the 5 TL.
Connection type: MultiContact MC4, 2 x for DC negative, 2 x for DC positive
5.7.3 AC connection
The AC connection is used for connecting the solar inverter to the grid.
The connection is made using a triple-core cable (L, N, PE).
Connection type: Wieland RST25i3s, plug supplied in the scope of delivery.
5.7.4 Communications Module (RS485 / ETHERNET / WiFi)
Ethernet
RS485 (1)
RS485 (2)
Antenna
Fig. 5.9.:
Communication Module for the 3 TL and 5 TL
The communications module in the 3.0 TL and 5.0 TL is very advanced and compact. With this module, that can be easily
removed with two screws on the faceplate, there is the possibility to gain access to RS485 interface, ETHERNET interface
and WiFi module (depends on the communications module type). See the following section for further details.
5.7.4.1 RS485 interface (EIA485)
The two RS485 interfaces are used to connect one or more solar power inverters to a monitoring system.
The RS485 interfaces are internally wired 1:1. This means that both RS485 interfaces can be used as an input or an output.
Multiple solar power inverters are connected in series. Each solar power inverter must have a unique RS485 ID. The termi-
nation resistor must be switched on at the last solar power inverter in the series.
The RS485 ID can be set during initial commissioning.
Connection type: 2 x RJ45
–
Set date/time
–
Set production after swapping inverters
–
Logs for Investigations
–
Firmware upload
5.7
Electrical connections
5.7.1 Overview
➄
➃
➂
➀
➁
Fig. 5.7.:
Electrical connections
Nr. Component
Description
➀
Blank (no function)
Not applicable
➁
DC Disconnect
Allows disconnecting the DC connections from the DC voltage of the PV modules
➂
DC Inputs
To connect the PV modules to the solar inverter
➃
AC Connector
To connect the solar inverter to the grid
➄
Communications Module
Allows access to RS485 interface - ETHERNET and WiFi enabled comm. module
configurations are also available as indicated in Chapter 5, section 5.1.1
