SMA RS485-Quick Module - Manual (Page 18)

Preparations for the RS485-Quick Module SMA America, LLC
18 RS485-QM-IA-eng-IUS111610 Installation Guide
4.4 Terminating the RS485 Bus
You must set the termination only on the inverter that is connected to the end of the RS485 bus. When
the RS485-Quick Module is delivered, the resistor for termination is located in the left spring-type
terminal. If the resistor (wire resistor: 120 Ohms) is no longer connected, proceed as described in this
chapter:
1. Flip up the flap of the RS485-Quick Module and lift
the cover until it snaps into place.
2. Open spring-type terminals 2 and 7 of the left-hand
connector.
3. Connect the resistor to spring-type terminals
2 and 7.
4. Close the spring-type terminals.
5. Close the cover of the RS485-Quick Module and
fold back the flap so that it snaps into place.
☑ The RS485 bus is terminated.