1. Introduction

The automatic extinguisher control panel is designed in accordance with European

standards EN54-2 and EN54-4 Fire Detection and Fire Alarm systems - Control and

Indicating Equipment and EN12094-1 Fixed firefighting systems - Components for

gas extinguishing systems - Part 1: Requirements and test methods for electrical

automatic control and delay devices.

The control equipment is a combined fire alarm control panel and extinguishing

system and has four detection zones, any or all of which are capable of contributing

to the extinguishant release decision.

Control panels have an integral, mains powered battery charger and power supply

designed in accordance with the requirements of EN54-4.

2. Technical specification

Table 1 - Electrical specifications

ITEM ELECTRICAL RATING COMMENT

Size 383mm W x 295mm H x 87mm D metal enclosure

Weight 5kg

Mains supply 90 to 270VAC, 50Hz/60Hz

Mains supply fuse 3Amp ( F3AL250V) Replace onlywith similar type

Power supply rating 3Amps total including battery charge 28V +/- 2V

Maximum ripple voltage ≤200 millivolts

Battery type Two 12 Volt sealed lead acid in series. 7Ah maximum

Battery charge voltage 27.6VDC nominal

Battery charge current 0.7Amaximum

Current draw in mains fail condition 0.095Amps With buzzer sounding

Current draw in second stage alarm 0.235Amps Two zones in fire(470 ohm in circuit)

Current draw in post discharge condition 0.310Amps solenoid outputs active

Maximum current draw from batteries 3Amps With main power disconnected

NAC outputs(sounder & bell circuit) 26 to 28V DC Fused at 500mAwith electronic fuse 1.2Amp total load over all circuits

Fault relay contact rating 2A/30VDC maximum for each Volt free changeover contact

Fire relay contact rating 2A/30VDC maximum for each Volt free changeover contact

First stage contact rating 2A/30VDC maximum for each Volt free changeover contact

Second stage contact rating 2A/30VDC maximum for each Volt free changeover contact

Extract contact rating 2A/30VDC maximum for each Volt free changeover contact

Zone quiescent current 4mAmaximum

Terminal capacity 0.5mm 2 to 2.5mm 2 solid or stranded wire

Number of detectors per zone ≤30 PCS conventional detectors

Number of sounders per circuit Dependent on type and current consumption

Detection circuit end of line 4K7±5% 1/2 Watt resistor 3K-5.6K 1/2W

Monitored input end of line 4K7±5% 1/2 Watt resistor 3K-5.6K 1/2W

Sounder circuit end of line 10K±5% 1/2 Watt resistor 6.8K-20K 1/2W

Extinguishant output end of line 10K±5% 1/2 Watt resistor 6.8K-20K 1/2W

No. of detection circuits Four 21 to 28V DC

No. of sounder circuits Four 21 to 28V DC

Extinguishant release output 21V to 28V DC. Maximum load 2Amp

Extinguishant release delay time Adjustable 0 to 75 seconds 5 second steps

SIL,AL, FLT, RST inputs Switched – min resistance 0 ohms, max 1k ohms

Detector alarm threshold 270 ohms to 1K ohms

Call point alarm threshold 150 ohms to 1K ohms

Short circuit threshold 0 ohms to 130 ohms

Statusunit/Ancillary board connection Two wire RS485 connection with electronic fuse. Max. of 32 units-RS485 data cable