User guide

Projecting Guidelines
System Description, AutroSafe Integrated Fire & Gas Detection System, 116-P-ASAFE-IFG/XE Rev. B, 2005-10-27,
Autronica Fire and Security AS
Page 41
5.2.2 Loop data
Loop driver types BSD-310: Standard detection loops for AutroSafe
addressable loop units (EX support with Zener
Barrier BZ-500)
BSD-311:High-power version of BSD-310, for loops
consuming more than 140mA
EAU-341 AutroFieldBus driver
BSD-321: AutroFieldBus loops (RS-485 interface)
BSD-340: PowerLoop
Maximum number of loop units per
Al_Com detection loop
127 (of which 99 can be detectors)
Maximum number of loop units per
AutroFieldBus
Up to 31 PowerLoop drivers or Protocol Converters
(or a combination of these)
Maximum number of loop units per
PowerLoop
Up to 15 addressable gas or flame detectors, or 4-
20mA interface units.