Installation Instruction VARIODYN
®
D1 System
22
FB 798663.GB0 / 05.19
5.1.2 Loop
Loudspeaker connection using loop technology with standardised cable monitoring enables redundant cabling
including Loop Isolator Modules (LIM e. g. Part No. 583342).
The LIM is installed in the ring loop and isolates operational areas from areas where a short-circuit has occurred.
This ensures complete loudspeaker functionality on the ring loop at all times.
Ring loop technology (schematic diagram)
The loudspeaker circuits are connected to the DOM and wired to the final amplifier output via the circuit relay.
Each circuit is constantly monitored for short-circuit, earth fault, and interruption.
Either standard loudspeaker circuits or a loop line can be connected to the connection terminals of the
loudspeaker outputs. A loop takes up the connection terminals for two standard loudspeaker circuits (outbound
and inbound connection of the loop).
DOM
DOM
Ringleitungstechnik
Loop technology
EOL
A
LIM
B
LIM
LIM
LIM
A
= max. 5 spurs with EOL
B
=
max. 1 Loudspeaker per spur (without EOL)
Fig. 13: Loop technology
•
A power reserve of 20% per amplifier should also be planned in.
•
The loudspeakers can be connected using communications cable I-Y (St) Y n x 2 x 0.8 mm or
comparable, for example. If a different, comparable cable type is used, please bear in mind the
output and cable length required.
