User guide

System Overview
System Description, AutroSafe Integrated Fire & Gas Detection System, 116-P-ASAFE-IFG/XE Rev. B, 2005-10-27,
Autronica Fire and Security AS
Page 5
2. System Overview
2.1 Definitions
• Al_Com is the communication protocol for the AutroSafe
Detection Loop.
• AUTROLON is AutroSafe’s Local Operating Network.
• AutroFieldBus is used to communicate with a BSD-340 interface
and BSD-321.
• PowerLoop is a two-wire bus capable of delivering 30VDC/ 100W
connected in ring topology and is galvanically isolated from the
rest of the system. The PowerLoop interfaces detectors and other
loop units including a 4-20mA interface.
• System Unit is a unit that is directly connected to the local
operating network; AUTROLON.
• Loop Unit is;
o a Point, an I/O-unit or an Electronic Sounder connected to
an Al_com Detection Loop.
o a Point connected to a PowerLoop.
o a Point connected to an AutroFieldBus Protocol Converter.
• Point is either a detector or a manual call point.