ABB Busch E-contact System Manual page 78

Information about planning and application
Installation and settings
Fig. 30: Application example: classroom with blackboard light
For optimum detection, the installation position of the Busch-Presence detector should be
selected above the pupils' desks.
The switch-off delay for such applications is to be set at approx. 10 minutes.
The Busch presence detectors have an almost circular detection range. The areas must overlap
slightly to ensure that there are no gaps in the detection.
The load is connected to the main unit. The main unit is responsible for monitoring the
brightness and the switch-off delay. The extension units have the task of routing detected
movement and the measured brightness value to the main unit.
System Manual 2CKA001473B9577 │78