Bosch PM1-LISD, Инструкция по установке и эксплуатации

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Installation option 2: Branch of loudspeakers connected to an Isolator
Board
The following figure shows how you can configure the loudspeaker line by connecting several
loudspeakers (branch of loudspeakers) to the tap-off connection of an Isolator Board:
1 2
3
4
7
4
7
5
6
8 8
6 6
4
7 7
5
6 8 8 6 6
4
3
Figure 4.2: Installation option 2: Branch of loudspeakers connected to an Isolator Board
Notice!
When using the 100 watt permissible load setting of the Isolator Board in combination with
the DC Blocking Board, an overload on the tap-off of the DC Blocking Board will not lead to a
fault indication in the system. If fault indication is required, use at least a 22 µF blocking
capacitor instead of the DC Blocking Board.
No. Item Installation option 2: remarks
1 Zone output of public
address/voice alarm system – 100 V constant voltage line (50 Hz – 20 kHz), 500 W
power handling capacity.
2 Master Unit – See Connections indicators and controls, page 31.
– See DIP switch settings, page 41.
3 Loudspeaker loop See Connections indicators and controls, page 31.
4 Isolator Board – A branch of loudspeakers with DC Blocking Boards
connected to the tap-off.
– The tap-off can be monitored for:
–
short circuits.
– open circuits.
– See Isolator Board settings, page 43.
5 Loudspeaker – Loudspeaker connected to the DC Blocking Board
tap-off connection.
4.3.2
Loudspeakers Line Isolator System Planning | en 23
Bosch Security Systems B.V. Installation and Operation Manual 2014.03 | V1.1 |