Solare Datensysteme Solar-Log - Manual (Page 221)

221
SMA
SMA connection using special RS485 piggyback card
76�2 SMA connection using special RS485 piggyback card
Easy Installation Termination Addressing Interface
Yes Jumper No RS485
Overview
•
Interface not integrated; retrofit the special RS485 piggyback card
•
Where to connect: Terminal strip inside the inverter on the piggyback
•
Communication address does not have to be assigned
•
4-pin wiring
•
Installation steps
• Switch off the inverters and Solar-Log™
• Installing the special RS485 piggyback in inverters
• Connect inverters to the Solar-Log™
• Connect the inverters to each other
Installing the special RS485 piggyback in inverters
Procedure
1. Open the inverter as shown in the inverter's instructions.
2. The Piggy Back has to be installed on the inverter's circuit board aligned to the left side under the
pin contract strip ( Figure 3, left ).
The print "unten [down]" on the board has to be visible on the bottom left-hand side ( Figure 3,
right ).
Figure 3: Control board before and after installation of the piggyback
Connect inverters to the Solar-Log™
•
The wiring is done using a
ready-made data cable (optional extra; not supplied)
or
self-made, shielded 4 wire data cable and terminal block connector.