Specifications

Installation
3.5 Installation Overview – star-connection using a
communication line splitter
The following system blocks are referred to in this overview:
EAU-321 AutroSafe Serial Communication Board
BSL-337 AutroSafe BU-70 Interface
BSL-12/2 Current Loop/RS-232 Converter
KDL-26B Communication Line Splitter
BU-70 Display Unit
BU-100/BU-101 Parallel Operation Panel
The Communication Line Splitter KDL-26B can be used to split the
communication line from AutroSafe to BU-panels into 4 separate
communication lines. This is especially useful in distributed systems
where there are larger distances between system panels.
A system setup using the Communication Line Splitter KDL-26B
provides a more secure communication line, as a fault on one
communication line will not affect other communication lines.
Furthermore, in larger distributed systems a star-connection will ease
the installation.
Due to power consumption, a maximum of 10 BU-panels can be
connected to one communication line (recommended limitation). The
maximum number of BU-panels connected to each Communication
Line Splitter is 16.
If the AutroSafe panel is to be connected to more than 16 BU-panels,
an additional BSL-337 interface and Current Loop/RS-232 Converter
BSL-12/2 must connected to the other available AutroCom port. Up to
2 AutroCom ports can be used per AutroSafe panel, allowing a
system setup consisting of a maximum of 32 BU-panels.
Interfacing BU70 Display Units and BU100/BU101 Panels, AutroSafe Interactive Fire-Alarm System,
116-P-BSL337/EE, Rev. D, 2007-01-25,
Autronica Fire and Security AS
Page 13
AutroSafe
ASSP
AutroCom
20mA Current
Loop
EAU-321 BSL-337 BSL-12/2
RS-232
RS-232
24VDC 24VDC
KDL-26B
BU-70/
BU-100/101
BU-70/
BU-100/101
BU-70/
BU-100/101
1 2 3 4
BU-70/
BU-100/101
Maximum 16 BU-panels