ABB Busch E-contact System Manual page 81

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 to the main unit.
Notice
When determining the luminosities and setting of the device, pay attention to the
different brightness distributions in the room.
Depending on the reflection conditions in the room or at the workstation, a
considerably lower brightness value is determined at the mounting site of the
device. If it should be switched on, for example, when the brightness at the
workstations drops below 500 lux, you must set a value of about 100 lux on the
device.
The "Take over current brightness" app function indicates the current brightness
at the mounting site. This value can be taken over directly for simplified
commissioning.
Notice
When making the setting, pay attention to the legal requirements for luminosities
at workstation.
Switching example of Monoblock device
16A
L
N
Fig. 33: Examples of switching: Open-plan office (main unit/extension unit) light control with extension unit input
[1] 6819/68-xxx-500 Compact, extension unit /6819/38-xxx-500 Universal, extension unit
[2] 6819/68-xxx-500 Compact, extension unit /6819/38-xxx-500 Universal, extension unit
[3] 6819/30-xxx-500 Universal, Relais / 6819/60-xxx-500 Compact, Relais
[4] Lamp
[5] Extension unit push-button
System Manual 2CKA001473B9577
Information about planning and application
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