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AFS42 fire alarm system

Application

AFS42 fire alarm system with ZBP41 power supply is a crucial element thanks to which a modern fire alarm system can be built in buildings of small or medium size. It allows identification of the place where the fire appears and allows independently programmed external executive devices to start automatically.

AFS42 fire alarm system has been designed to create a fire alarm system adjusted to a specific building. In order to get as many address lines and outputs for executive devices as needed, up to five system's AFS42 can be joined into one system. Then it is also possible to build a distributed system where systems are connected only by means of RS485 network and all the remaining connections are of local character within each of the systems. The entire system is administered from one superior system. In order to improve the reliability, the RS485 network is led along two independent tracks. Additionally, in case of simultaneous communication failure on both tracks, the systems start working independently.

 

Construction

AFS42 fire alarm system is made of a single, flat electronic module placed with ZBP41 power supply in a metal cage. All the inputs are in form of screw terminals, which additionally allow quick disconnection (for service purposes). The colours of the cage can be adjusted to the interior decoration on request of the investor.
 

The principle of operation

The system's work is based on programs working in three microprocessors cooperating with each other – on the basis of the configuration saved in memory by the fitter. Two independent information canals are constantly controlled: fire watch line state and the state of power supply with accumulators supplying the system.

All the divergences between the system configuration and the actual state are immediately converted into alarm states and signals. System's configuration allows to group fire watch line addresses in zones; to set different alarm levels for all the addresses and zones; to start working automatically; to configure executive devices' work; to enter texts describing addresses, zones and executive devices. All the events happening during the system's work are saved in non-volatile memory and later they can be revised on the system's display. In system's microprocessors' work multilevel systems protecting from data loss or the program hang-up are included. AFS42 fire alarm system operates one fire watch line in which 100 addresses may be controlled.

The system consists of five systems and has got five fire watch lines, 500 addresses and 20 outputs for executive devices. It is possible to continue fire watch process of the whole building even in case the line gets tangled, no matter if there is short circuit or the line is damaged. The system controls the presence of the detectors in the line (their proper work) and a given detector's alarm state. The system cooperates with cooperates with GNA42 base used to connect OSD23 smoke detector and also with ROP42 – manual fire warner, which is used to start alarm directly by the person who noticed the fire. ROP42 has got MAR42 address module with a double-sided short circuit insulator. By means of MAR42 address modules it is possible to equip the system with any two-state fire signalling detectors in which alarm state causes the increase of feeding current or short circuit.

 

 

Specifications

Type

addressable

Level of cage security

IP30

Working temerature range

from -20 to +50 degrees C

Dimentions (length x width x height)

115 x 231 x 403 mm

Types of devices working with the central set

ZBP41 power supply, ROP42, GNA42,

Type of fire watch line

loop

Number of fire watch lines

1

Maximum number of the elements in a line

100

Fire watch line voltage

20.05.2009

Stand-by maximum current

400mA

Acceptable line resistance

100Ohm

Acceptable line effective capacitance

100nF

Acceptable line inductance

0,1mH

Short-circuit insulator in the central set output circuit

yes

Short-circuit insulator in all line elements

 

Number of relay outputs

4

Relay connectors maximum current

1A

Configurable properties of relay outputs:

 

 

- NC/NO yes

 

- potential / nonpotential yes

 

- supervised / not supervised yes

 

- mute option yes

Multistage alarm organization

yes

Setting signal delays

yes

 

- waiting for first-stage alarm confirmation from 0 s to 40 min every 10 s

 

- recognizing event after confirmation from 0 s to 40 min every 10 s

 

- turning on alarm outputs delay from 0 s to 40 min every 10 s

Correlative alarm

yes

Alarm counter capacity

500 events

Real time clock

yes +/- 2 s per 24 h

Recommended wire in the fire-watch line

YnTKSYekw 1x2x0,8

Connecting wire screen of the fire-watch line

one way to E do zacisku E (obudowa centrali)

Recommended signal wire

HLGs 2x1,0

Central set cage ground

PE filament of the supplying wire

Network option

yes - 5 central sets max

Central set program version

CG2-CS3-MA2

 

 

Technical specifications of ZBP41 power supply

 

Level of the cage protection

IP30

Working temperature range

from -20 to +50 degrees C

Dimentions(length x width x height)

94 x 231 x 403 mm

Cage material

powder painted steel

Power supply voltage

230 V AC

Maximum current consumption

1 A

Inner working voltage

24 V DC

Power consumption

160 VA (max)

Accumulators type

ferrous, automatic

Max. accumulators capacity

18 Ah

Buffer voltage

27,6 V DC

Temperature compensation

yes

 

  

 

  1. 1. AFS42 fire alarm system - data sheet
    42-afs42-kk-090730-en.pdf