RiTTO TWINBUS, System Manual

Page: 50 / 197

Inst
alla
tion
Installation: Assembly, connection and start-up
50
Starting up
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.
You can use the intercom when two persons perform the start-up.
The video connection between the video indoor station and the door station is automatically set up when the bell
button is operated at the door station.
Power to each individual video indoor station can be supplied from the associated 1 6477 mains transformer
(decentralised). However, power for up to 12 video indoor stations can also be centrally supplied by the video 1 4874
power supply unit.
Adjustment protection
Via the TwinBus power supply unit, the connected intercom units can be protected against inadvertent changes to
the TwinBus settings.
A negative acknowledge tone when the key combination to switch over to the start-up menu is pressed is an indication
that adjustment protection has been activated.
Activate the terminal resistor using the DIP switch on the device
Start-up using the video indoor station
One-man start-up
Caution!
Damage to the unit and the connected camera.
No voltage must be applied to terminals Va and Vb.
1. DIP switch for activating the terminal resistor (factory
setting: OFF)
2. LED (voltage present at Va and Vb)
Note:
If the LED (2) illuminates, this means voltage is present at the Va and Vb terminals to the next indoor
video station. The indoor video station will not switch on for safety reasons.
Activity Result
OFF ON
1
2
00831-0
>Press and hold for 5 s
until
flashes
RiTTO
Within one minute, press the button to
be assigned on the door station
acoustic signal for confirmation at
indoor video station and door station
RiTTO