SMA SUNNY BOY 3.0 - Connecting RS485 Devices

6 Electrical Connection
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 35
7. Screw the swivel nut onto the threaded sleeve.
1
2
8. If you would like to establish a direct connection, connect the other end of the network cable
directly to the end device.
9. If you would like to integrate the inverter into a local network, connect the other end of the
network cable to the local network (e.g., via a router).
6.4 Connecting RS485 Devices
Additionally required material (not included in the scope of delivery):
☐ One communication cable for RS485 communication
☐ One M12 plug, 4-pole
Signal assignment:
Pin connec-
tor
Signal TS4 Gate-
way
SunnyWe
bBox
Sunny Boy
Control
Insulated
conductor
color
4 3
1 2
1 GND - 5 5
2 +12 V + - -
3 Data- B 7 8
4 Data+ A 2 3
Procedure:
1.
DANGER
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see Section9, page70).
2. Assemble the M12 plug and connect the RS485 cable to the plug (see manual of the M12
connector).
3. Ensure that all conductors are correctly connected to the M12 plug.
4. Unscrew the protective cap from the jack for the
RS485 communication connection.
RS485