ABB Busch E-contact System Manual page 76

Through the smartphone app "ABB Watchdog Remote control" or a 2gang push-button
connected to the 6494-500 Extension unit connection, the panel light can be activated.
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 300 lux, you must set a value of about 80 lux on the
device.
The "Takeover current brightness" app function indicates the current brightness
at the mounting site. This value can be take over directly for simplified
commissioning.
Notice
When making the setting, pay attention to the legal requirements for luminosities
at the pupils' desk.
Examples of switching
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Fig. 28: Examples of switching: DALI light control with extension unit input and blackboard light in classroom
[1] 6494-500 Extension unit connection (for the connection of the blackboard light in the form of
a 2-gang push-button)
[2] 6819/35-xxx-500 Universal BT, DALI
[3] 6819/39-xxx-500 Universal, DALI extension unit
[4] 6819/39-xxx-500 Universal, DALI extension unit
[5] DALI operating device
[6] Blackboard light
[7] Extension unit push-button
System Manual 2CKA001473B9577
Information about planning and application
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