112
en | Installation
Modular fire panel
07.2020 | 12.0 | F.01U.028.089
System Information
Bosch Sicherheitssysteme GmbH
4.9.10
LSN 0300 A LSN improved Module 300 mA
This module enables an LSN loop with up to 254 LSN improved elements or 127 classic LSN
elements to be connected, with a maximum line current of 300 mA and a cable length of up to
1600 m (depending on configuration and cable type).
Notice!
To ensure that the fire detection system is operated in compliance with EN 54‑13, each LSN
stub and T-tap must be terminated with EOL modules.
Figure 4.63:
LSN 0300 A LSN improved Module 300 mA
Labeling
Connection
LSN loop
LSN stub
AUX1 + | AUX1 -
Auxiliary power supply
Auxiliary power supply for stub 1
LSN a1- | LSN b1+
LSN a1- / LSN b1+ outgoing
Stub 1 LSN a1- / Stub 1 LSN b1+
AUX2 + | AUX2 -
Auxiliary power supply*
Auxiliary power supply for stub 2
LSN a2- | LSN b2+
LSN a2- / LSN b2+ incoming
Stub 2 LSN a2- / Stub 2 LSN b2+
* The auxiliary voltage may only be fed back to AUX2 when isolators (ERT technology) are
used in the loop (suitable components include YBO-R/SCI isolators).
Summary of Contents for FPA-1200
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