ritto TWINBUS Installation Seite 11

Installation
Video door intercom with central power supply
a1 max. 12
2x2+2
2 ED 2
1 7817 1 7817
2x2+2
2 ED 2
1 7817 1 7817
2x2+2
1 6477 1 4874 1 4874
UV
2
max. 12
a1
a b ED ED
ED
a ED
b ED
ED
a b ED ED
ED
1 4874
+
L N
L N 1 2 3 4 11 21
Va Vb
L N
Va Vb
1 4760
1 2 3 4
1 4753
* Please observe the red marking
** Please observe the system bus connection
*** Max. 12 video indoor stations
5
a2 max. 12 a3 max. 12
2x2+2 2x2+2
ED 2 ED
1 7817
2x2+2 2x2+2
ED 2 ED
1 7817
2x2+2 2x2+2
2x2+2 2x2+2
1 4874 1 7573 1 4813
8
1 4780
RiTT O 1 4760
1 4753
1 4753
B0095-2
max. 12
a2
1 7817
Va Vb
Va Vb a
1 7817
Va Vb a
Va Vb
1 7817
Va Vb
Va Vb a
1 4874
+
L N
a1 b
Va Vb + E+
1 6477
1 2 3
1 4780
1 2
Block diagram: Video door intercom for a multifamily
residence with 3 main bus lines.
Note:
The Video Indoor Stations B/W 1 7817 cannot be
operated in parallel on a single push-button.
Circuit diagram: Video door intercom for a multi-family
residence with 3 main bus lines with central
power supply and 1 4813 line distributor.
1 7817
Va Vb
b ED ED Va Vb
ED
1 7817
ED Va Vb
b ED Va Vb
ED
1 7817
Va Vb
b ED ED Va Vb
ED
L N
a2
Va Vb
max. 12
a3
Va Vb
a b ED ED Va Vb
ED
a ED Va Vb
b ED Va Vb
ED
Va Vb
a b ED ED Va Vb
ED
1 4874
+
1 7573
a3
1 4813
Va Vb
GB
1 7817
1 7817
1 7817
S0104-2