Bosch FPA-5000 - LSN 0300 a LSN Improved Module 300 Ma

Modular Fire Panel Installation | en 113
Bosch Sicherheitssysteme GmbH System Information 09.2017 | 11.3 | F.01U.028.089
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4.66: 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).
The technical data can be found in LSN0300A LSNimprovedModule 300mA, page 153.