Fire Fighting Enterprises FIRERAY 2000 EExd - Manual (Page 12)

Page 12 of 12
FIRERAY 2000 EExd - SYSTEM
SPECIFICATION
SYSTEM TYPE
Transmitter (TX) Rugged for EExd IIB areas - IP67
Receiver (RX) Rugged for EExd IIB areas - IP67
Controller (CU) Designed to be sited outside the hazardous
area. Rugged for light industrial and
domestic use - IP50
CERTIFICATION
SIRA03ATEX1504
CONFORMS WITH
EExd General
requirements) BS EN 50014 : 1998
EExd enclosures BS EN 50018 : 2000
Fire Alarm Systems BS 5839 : Pt 5 : 1988
Emc Immunity BS EN 61000-6-2:1999
Emc Emissions BS EN 61000-6-4:2001
Alarm Systems - EMC BS EN 50130-4 1996
ATEX Directive 94/9/EC
TEMPERATURE
Range -20

C to +55

C
THRESHOLDS
Alarm 25%, 35% or 50%**, switch selectable
(1.25db, 1.87db or 3.01db**)
** For full compliance with BS5839 Pt.5,
use 25% and 35% thresholds. 50%
threshold is normally recommended for retro
mode.
Fault >=93% (11.55db), fixed
DETECTION TIMES
Fire 10 seconds (min)
Fault 5 seconds (min)
SYSTEM RANGE
Minimum 10m
Maximum 100m
TRANSMITTER
Type Pulsed, Focused Infra-Red beam
Beam Half-Angle 1

approx
Spectrum Nominally 880Nm (Near Infra-Red)
Max IR O/P (mean) 6.4mW/Sr at IR LED
Max IR O/P (peak) 800mW/Sr at IR LED
Misalignment angle @25% and (@ 50%) threshold settings
During installation +/-1

(+/-1

) for a measurable signal
After installation +/-0.5

(+/-0.75

) (After perfect alignment)
Connections 2 wire, power only required - no connection
to other system parts necessary
RECEIVER
Misalignment angle @25% and (@ 50%) threshold settings
During installation +/-4

(+/-5

) for a measurable signal
After installation +/-3

(+/-4

) (After perfect alignment)
Connections 3 wire, connected to Controller Unit only
SUPPLY VOLTAGES (At each detector component)
Tx (nominal) +12Vdc to +24Vdc
Tx (min/max) +11.5Vdc to +28Vdc
Control/Rx (nominal) +12Vdc to +24Vdc
Control/Rx (min/max) +11.5Vdc to +28Vdc
Rx N/A, Supplied from Control Unit
SUPPLY CURRENT
Control/Rx (Normal) 7.5mA @ all ranges
Control/Rx (Alarm) 13.5mA @ all ranges
Tx 1.6mA @10m to 5.6mA max @100m
SUPPLY RIPPLE
Tx 0.5V p-p min, sine, 50-100Hz @11.5Vdc
Immunity increases with higher supply
voltage
Control/Rx 0.5V p-p min, sine, 50-100Hz @11.5Vdc
Immunity increases with higher supply
voltage
SYSTEM RESET
Internal Via slider switch in controller unit
External (1) Remote Reset input - Ground for >5mS
External (2) Power break for 1 second then re-power
INITIALISATION
TIME
Following reset 50 seconds
SYSTEM OUTPUTS
Fire Alarm Voltage-Free SPCO contacts, switch
selectable for latching or auto-reset
operation.
Fault Alarm Voltage-Free SPCO contacts, auto-resetting
operation
Contact ratings 1.0A @ 24Vdc (resistive)
0.3A @ 24Vdc (Inductive)
0.5A @ 120Vac (resistive)
0.2A @ 120Vac(inductive)
Meter Output DC output proportional to signal strength,
for alignment and maintenance check
purposes
Meter Range
No signal
Low signal
Normal signal
High signal 2.7Vdc to 6Vdc approx
2.7Vdc
>2.7Vdc to <4.1Vdc
4.25Vdc +/-0.15Vdc
> 4.4Vdc
COMPENSATION (AGC)
Function Detects and corrects for Rx/Tx lens
contamination, or minor gain errors after
installation or reset.
Update Period Every 1.5 hours
Correction step Approx 7% per step
Correction Range Approx -28% to +77% (% with respect to
initial setting)
SYSTEM CABLING
Max Cable Run 100m to any system part
Cable Type Screened (MICC recommended)
Max Capacitance 100pF/m
SIZES
Controller 215mm x 265mm x 88mm
Heads 120mm x 125mm x 125mm
Brackets 172mm x 124mm x 56mm
WEIGHTS
Controller 1060 grammes
Tx 2140 grammes
Rx 2165 grammes
Brackets 1530 grammes
FINISH
Controller White Powder Coat, to RAL 9010
Heads Red Powder Coat to RAL 2002
Brackets Red Powder Coat to RAL 2002
Document Number: 23989.00.01