SMA Sensorbox - Manual (Page 50)

Startup SMA Solar Technology AG
50 Sensorbox-IEN100914 Installation Guide
7.5.5 Connecting the Sunny SensorBox to an Additional RS485 Bus
Node
1. Open the Sunny SensorBox (see page 61).
2. Remove the termination resistor at "F2: OUT RS485"
on the Sunny SensorBox.
3. Unscrew the cable gland's lock nut at the top right
of the Sunny SensorBox and remove the filler plugs.
4. Thread the RS485 communication cable through
the lock nut and the cable gland and into the
enclosure of the Sunny SensorBox.
5. Remove 4 cm of cable sleeve from the RS485
communication cable that is connected to the
Sunny SensorBox.
6. Strip approx. 6 mm of insulation from the wires.
7. Twist the cable shield into one string.
8. Pull the insulating tube over the cable shield. Allow 4 cm of the cable shield to stick out of the
insulating tube.
NOTICE!
Damage to the Sunny SensorBox caused by metal or cable scraps left inside the
device.
• When working on the cable, make sure that no metal scraps from the cable shield or
cable itself fall into the Sunny SensorBox while it is open. Remove any metal or cable
scraps if present.