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Conventional loop interface - BNB-330
AutroSafe interactive fire detection system
Product datasheet
Features
Interfaces up to 32 conventional detectors of the 15V or 24V type to the AutroSafe interactive fire detection system
Easily plugged onto a standard mounting rail
Designed to meet EN 54 requirements and conforms to CE standards
Galvanic isolation between the AutroSafe detection loop and the 24V conventional sub loop
Alarm and fault indicators
With SelfVerify function for reduced maintenance/testing and increased reliability
Description
BNB-330 is a modular interface designed to monitor conventional fire detectors of the current increase type and to convey their status to the AutroSafe fire alarm control panel. The conventional detectors are connected to a two-wire sub loop. The sub loop is monitored for broken line by an end of line unit BNY-330. As default a short circuit of the sub loop will give a fault warning, but the unit may be configured to give an alarm instead.
Conventional loop
The alarm current level is above 25mA, and the short circuit level is below 35ohm. The maximum working current drawn is 10mA.
Broken line monitoring is performed by turning the power off for
40 ms on the sub loops. The BNY-330 will respond to this by drawing a current from the sub loop. Any devices connected to the sub loop must be capable of filtering out the 40ms voltage drop. Standard voltage on the sub loop is 15 VDC. Shorting terminal 7 to terminal 6 (0V) will change the sub loop voltage to 24
VDC.
To prevent a disablement of any manual call points, they have to be connected to a separate conventional loop interface.
The unit has LED indicators showing power present, fault or alarm. On alarm condition the open collector T-output activated.
A low voltage fault is entered if the output is less than 12,5V when the 15V option is selected. Also, a low voltage fault is indicated if the output is less than 18V when the 24V option is selected.
SelfVerify: the ability to initiate alarm signal is regularly checked.
Connections
The unit must have a separate 24V supply. This 24V may come from the connection points 5 and 6 or by stacking it together with other AutroSafe internal modules that have power through their
32p parallel connector. Do not use both options at the same time.
NOTE: To ensure correct addressing, when stacking the BNB-330 together with other internal modules, make sure that it is mounted at the top, above all other internal modules. (Refer to the table in the right column) A loss of 24V to the BNB-330 will cause power failure to the sub loop. It will also cause a break in the AutroSafe detector loop, therefore the following guidelines apply: If more than one unit is used remotely in a detector loop, they must be connected together on the main detector loop without any detectors between, or they must have a redundant 24V power supply. If a total of more than 32 detectors are connected to the conventional sub loops of these units, they must have a redundant 24V power supply in order to avoid that a single fault causes loss of more than one 32 detectors.
Connections/indicators
Front view when mounted on rail
Screw terminal 10
Screw terminal 1
Green Red indicator
Yellow indicator
H5 (24V) indicator
H1(Alarm)
H4 (fault)
Red indicator (H1) – The unit is in Alarm
Yellow indicator (H4) – The unit is in Fault
Green indicator (H5) – The presence of 24 VDC
The module has the following connections:
Screw terminal no. Signal
5 + 24V Input
6 0V
7
8
Conventional loop 15V/24V select
T-output / Open collector
9
10
+ conventional loop
- conventional loop
116-P-BNB330/CGB, Rev. D, 2009-07-09 Protecting life, environment and property…
Conventional loop interface - BNB-330
Technical specifications
Dimensions BNB-330
Weight BNB-330
Dimensions BN-330
Weight BN-330
95x89x32 mm
81 g
175x125x125 mm
180 g
Material Polycarbonate
Colour
Current consumption (Idle), loop
Light grey (RAL 7035) transparent lid
0,3mA
Supply voltage
Current consumption idle/alarm:
Conventional loop voltage
21V - 28V
20mA / 80mA
15V or 24V
Detector idle load conv. loop max. 10mA
Conventional loop resistance Max. 30 Ω
Alarm current conv. loop
Load T-output
Temperature min. 24mA max. 75mA
- 20° +70°C
Humidity (non condensing)
Degree of protection
Max. 95% RH
IP67
Maintenance None
Service Replace if faulty
Installation overview
-
Version BN-330
The BN-330 consists of a
BNB-330 module mounted on a
DIN rail inside a PC box. Optionally more BNB-330 modules can be mounted in the same box.
Part number
116-BNB-330
116-BN-330
116-BNY-330
Description
Conventional loop interface
(module).
End of line unit included.
Conventional loop interface
(box)
End of line unit (separate)
Dimensions BN-330 (mm)
AUTRONICA FIRE AND SECURITY AS
Head office, NO-7483 Trondheim, Norway Tel: +47 73 58 25 00, fax: +47 73 58 25 01, e-mail: [email protected]
Oil and Gas division, Stavanger, Norway
Tel: +47 51 84 09 00, fax: +47 51 84 09 99
Maritime division, Spikkestad, Norway Tel: +47 31 29 55 00, fax: +47 31 29 55 01
Visit Autronica Fire and Security AS’ website: www.autronicafire.com
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