Priva Compass Installation Manual page 48

Priva
1. Connect the supplied sensor cable (AWG26) with the plug to the WSC11.
2. In a junction box, connect the cores of the sensor cable to the extension cable.
3. In the junction box, install a terminating resistor of 120 Ω / ½ W between the data+ and data-
line (the green and yellow core respectively of the sensor cable) as a bus termination.
4. Calculate whether the 24 VDC power supply for Compass field equipment has sufficient capacity
to also power the WSC11. Add an extra power supply if the capacity is insufficient.
5. Connect the cores for power supply to the 24 VDC power supply for Compass field equipment.
6. Connect the cores for data to the RS485 port of the C4. See
7. Connect the biasing and bus termination module in accordance with the diagram below. For
the specifications, see
The power supply and the data bus are not electrically isolated.
LEDs
The LEDs at the bottom of the WSC11 are visible through the housing.
46
Loytec LT-B4 biasing & termination module (page
Connections - RS485 (page
51).
Installing Priva Compass - 00.014
33).