urmet domus BiBus II Manual De Sistema página 28

Organisation in spines is useful because if a spine
fails (spine bus short-circuit or faulty door phone),
it can be cut off from the system permitting the
remaining spines to work normally.
STAIRCASE LIGHT CONTROLLER RELAY
The coupler is equipped with a low voltage contact
controlled for one second subsequent to the
following events:
• pressing of "staircase lights" button on any door
phone connected to the respective spines;
• pressing of "staircase lights" button on secondary
door unit connected to the respective spines;
• pressing of "staircase lights" button on any main
door unit (with digitiser only);
• pressing on concierge switchboard button F1.
TROUBLESHOOTING
The bus coupler has two LEDs indicating the status
of the respective door phone spine. One or more
coupler LEDs will go out to indicate a short-circuit
on the corresponding door phone spine.
28
BASIC DOOR PHONE Ref. 1172/31,
COMFORT DOOR PHONE Ref. 1172/32
PERFORMANCE
• Automatic 1st or 2nd Edition system recognition.
• Conversation privacy function (single integrated
decoder).
• Two-tone door phone call.
• Two-door floor call (different from door phone
call).
• Supplementary speaker for floor call and door
phone call.
• Door opener button.
• Staircase light button.
• Switchboard call button.
• Video bracket control output.
• Visual call in progress signal.
• Door open indication (if service is active).
• Two-position door phone call and floor call volume
selection: Low-high volume can be selected
during installation (only 1172/31).
ADDITIONAL PERFORMANCE 1172/32
• Two-position door unit call volume.
• Ringer mute function with visual indication by
means of LED (slow blinking).
• Supplementary ringer 1072/59 control.
• Auxiliary supplementary button.
STRUCTURE
The basic door phone consists of the following
parts:
12 11 10
VOLUME
9 8
1 2 3
DS1072-021B
7
6
5
4