User guide

System Hardware
4.2 AutroFieldBus Driver EAU-341
4.2.1 Description
The AutroFieldBus driver EAU-341 is a communication protocol
converter between the AutroSafe IFG panel and the BSD-340
PowerLoop drivers and the BSD-321 RS-485 protocol converters. The
EAU-341 provides a redundant field bus system with a ring loop
topology.
The AutroSafe panels can have one AutroFieldBus connected, and
each AutroFieldBus can host up to 31 bus units.
The AutroFieldBus has short-circuit detection/isolation technology
which ensures that only one BSD-340/BSD-321 will be lost in case of
internal failure (short-circuit).
The ring loop topology ensures that no detectors/field units will be lost
due to a single break or short circuit of the AutroFieldBus cable.
The AutroFieldBus cable is normally 2-wire twisted pair category 5
copper cable, however, fibre optic cable is possible by use of separate
signal converters. The AutroFieldBus uses the same guidelines as
AUTROLON, in terms of cable lengths, fibre modem and boosters.
The EAU-341 is to be mounted in a subrack in the same rack as
AutroSafe or within the AutroSafe cabinet. The interconnecting RS-
232 cable between EAU-341 and the IFG panel must be less than 3m.
For further information, refer to data sheet.
4.2.2 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 13
Power
Fire Brigade Msg
Fire Vent Activated
Fire Ext Activated
0
ALARM
?
C
98
7
6
54
3
21
Silence Buzzer
Silence Sounders
Reset
More Alarms
Prewarning
Early Warning
System Fault
Function Disabled
Test
Fault
Self Verify
General Alarm
AutroCom
EAU-321
EAU-341
AutroFieldBus
BS-320
BSD-321
Analaser
HSSD
BSD-321
BSD-321
SafeEye
OPGD
CCTV
RS-485
RS-485
RS-485
HUB
Video
Switch
BSD-340
Flame
Detector
BSD-321
AL500
RS-485
Pulsar
OPGD
PowerLoop
BSD-340
Flame
Detector
PowerLoop
Gas
Detector
BN-342
4-20mA
Power
Fire Brigade Msg
Fire Vent Activated
Fire Ext Activated
0
ALARM
AutroCom
?
C
98
7
6
54
3
21
Silence Buzzer
Silence Sounders
Reset
More Alarms
Prewarning
Early Warning
System Fault
Function Disabled
Test
Fault
Self Verify
General Alarm
EAU-321
EAU-341
AutroFieldBus
BS-320
BSD-321 BSD-321
SafeEye
OPGD
Analaser
HSSD
BSD-321
CCTV
RS-485
RS-485
RS-485
Flame
Detector
HUB
Video
Switch
BSD-340
BSD-321
AL500
RS-485
Pulsar
OPGD
PowerLoop
BSD-340
Flame
Detector
PowerLoop
BN-342
4-20mA
Gas
Detector