RiTTO TWINBUS, System Manual

Page: 85 / 197

Installation: Assembly, connection and start-up
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2.5.9 TwinBus signalling device 1 7930
Assembly
Remove the TwinBus device and the supplied components from the packaging.
Please provide your customers with a copy of the operating instructions for the TwinBus device.
Connection
Connect screening on incoming and outgoing lines. Connect all unused wires as screen for YR lines.
Button adapter 1 4645 must be used when multiple signalling devices operated in parallel are to react to one
apartment button (ED).
Starting up
Start-up can be performed using the signalling device or the apartment button. The start-up using the apartment
button is very useful if you do not have any access to the dwelling.
In order to allow the operator to change the call tone of the main bell button, the main bell button must be programmed
as the main button when initial setting takes place. The procedure must be repeated for other bell buttons.
Adjustment protection
The TwinBus power supply unit can be used to give the connected signalling devices a setting protection to prevent
them from being changed inadvertently.
You can recognise an activated setting protection by the negative acknowledge tone when you press the setting key,
the red LED flashes twice briefly.
Note:
The signalling device 1 7930 is installed in the same way as the compact intercom unit 1 7132 –
refer to page
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76
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Connections
a, b bus terminal
ED, ED apartment button