Steca Elektronik StecaGrid 2020 Instrucciones De Instalación Y Manejo página 18

EN
The following optionally available devices support the transfer protocol used by the inverter:
• StecaGrid Vision remote display: display of the data from inverters connected to the RS485 bus
• PC or notebook (with suitable software, for technical professionals only):
– Load firmware updates
– Read inverter information using Steca service software
– An optional RS485/USB adapter for connecting to the inverter is also available. The adapter is
available from Steca.
• External data loggers, recommended by Steca for professional system monitoring:
– WEB'log (Meteocontrol)
– Solar-Log (Solare Datensysteme)
Note
The correct settings must be made in external data loggers, according to the manufacturer's instruc-
tions, before connecting them to the bus.
The wiring diagram of the RS485 bus is shown below.
1
Fig. 6: Wiring diagram, using the StecaGrid Vision remote display as an illustrative example

StecaGrid Vision or external data logger (in Fig.: StecaGrid Vision)

First inverter

Inverter

Last inverter, terminated

Standard RJ45 cable (patch cable)
7.6.3 Alternative data connection cable
Attention
Material damage caused by electrical voltage! The alternative data connection cable may only be
manufactured by professional personnel.
The alternative data connection cable is a Cat-5 cable for long data connections. The following ap-
plies to the alternative data connection cable:
• The total length of the RS485 bus must not exceed 1,000 m (Master/first inverter to last inverter).
• Use a 1:1 pin assignment if the alternative data connection cable is connected to the RJ45 sock-
ets of the inverters and the StecaGrid Vision.
• Use the pin assignment according to Tab. 8, P. 17 if the alternative data connection cable
is connected to the RJ45 socket of the first inverter and to the COMBICON connector of the
StecaGrid Vision or to the connector of an external data logger.
16
2
5
RS485
3
5
RS485 RS485
4
5
744.711 | 12.20