SMA Sensorbox - Manual (Page 40)

Startup SMA Solar Technology AG
40 Sensorbox-IEN100914 Installation Guide
7.5 Startup via the RS485-Power Injector
7.5.1 Information on Starting up the Device
The RS485 Power Injector is used to integrate the Sunny SensorBox into the RS485 communication
bus. The RS485 Power Injector is designed to supply the Sunny SensorBox with power. It is
recommended that you place the Sunny SensorBox at the end of the RS485 communication bus. The
required termination has already been pre-wired.
To connect the Sunny SensorBox to the RS485 communication bus, proceed as follows:
① Connect the RS485 Power Injector to an RS485 bus node (see page 41).
② Connect the RS485 Power Injector to the Sunny SensorBox (see page 43).
③ Connect the RS485 Power Injector to the power supply (see page 52).
The following options are also available:
• Connect the Sunny SensorBox to another Sunny SensorBox (see page 46)
• Connect the Sunny SensorBox to another RS485 bus node (see page 50)
Information on RS485 cabling
See the RS485 cabling plan poster for information on RS485 cabling.