Tunnel Master® wbc Installation Guide
Page 39
Truck Bed Sensor Power Terminations
TUNNEL MASTER wbc
24 VDC
ORANGE BLACK
+ -
ULTRASONIC
CONVERTER BOX
ORANGE BLACK
24+ 24-
18/4 with Shielded Cable
Figure 34. Ultrasonic Sensor Power Terminations
Connections from WBC to the Ultrasonic Converter Box (Power)
Use +24 V DC from the WBC to power the Ultrasonic Sensor.
1. Connect the orange terminal block inside the WBC on the bottom right side to the orange terminal block in
the Ultrasonic Converter box.
2. Connect the black terminal block inside the WBC on the bottom right side to the black terminal block in the
Ultrasonic Converter box.
Ultrasonic Sensor Wiring
Sensor communication connections are RS-485. ICS recommends wiring the ultrasonic sensor on a dedicated
line. Avoid wiring additional devices: a keypad or smart relay box on the same line as the ultrasonic sensor.
Two RS-485 communications ports are available on the Tunnel Master® wbc. Use one port for the ultrasonic
sensor, and the other for additional devices.
Communication wiring runs from the Tunnel Master® wbc directly to the terminations blocks on the Converter
inside the Ultrasonic Sensor box (truck bed sensor).
Connections to the Tunnel Master® wbc are shown in the table 14 and Figure 34.