Rs-485 Communication - Ingeteam INGECON SUN 3Play Série Manuel D'installation

Ingeteam

7.2. RS-485 communication

To communicate several inverters via RS-485, create a communication bus. In each inverter, make the connection
as shown in the following figure. You must install a ferrite rod (supplied by Ingeteam) and going around the
communications wiring two times.
The standard recommends installing 120 Ohm end of line resistors at the two ends of the RS-485 wiring. In order
to activate the end-of-line in the final inverter of the communication bus, switch the three switches indicated in
the figure to ON.
CAUTION
In the communications bus, only the end-of-line resistor of the final inverter of the communication bus should
be active (the three switches in ON). For the remaining inverters, the resistance must be deactivated (the three
activators for each of the switches must be in OFF).
If communication is via RS-485 with a single inverter, the end-of-line resistor must be enabled.
After making the connections in the connector indicated in the previous figure, the necessary cabling for its proper
installation will leave the unit through the packing glands installed in the dedicated wiring access.
86
1 2 3
O n
O ff
Pin Signal
1 RS-485 B(+)
2 RS-485 A(–)
3 Protection shield*
4 GND
* Terminal to facilitate the connection.
Connection of accessories
ABO2011IQM01_C - Installation and Operation Manual