Page 2 of 4 DF-50934
SPECIFICATIONS
Operational
Range:
30' to 330' (length).
Smoke detector spacing:
On smooth ceilings, 60' be-
tween projected beams and not more than one-half that
spacing between a projected beam and a sidewall. Other
spacing may be used depending on ceiling height, airflow
characteristics, and response requirements. See NFPA
72 A-5-3.5.5.2.
Sensitivity:
30% ± 5% total obscuration
OR
55% ± 5%
total obscuration.
Fault condition (Trouble):
95% or more obscuration;
automatic gain control limit; improper initial alignment.
Test/Reset features:
Obscuration filter; local reset switch;
remote test and reset switch capability (compatible with
RTS451 test station).
Indicators:
ALARM Local red LED
TROUBLE Local amber LED
NORMAL Local flashing green LED
Alignment aid:
Integral signal strength indication (4 red
LEDs).
Relays:
Alarm, Trouble. EOL relay is required to super-
vise power.
Environmental
Temperature:
-30°C to 55°C (-22°F to 131°F).
Humidity:
95% RH non-condensing.
Mechanical
Dimensions:
With no bracket, 2.5"H x 8.5"W x 7"D.
With ceiling mount bracket, 5.5"H x 8.5"W x 7"D.
With wall mount bracket, 5.5"H x 8.5"W x 10"D.
Weight:
Receiver, 1.5 lb. (663 g). Transmitter, 1.3 lb.
(598 g).
Mounting:
Separate ceiling and wall brackets.
Wiring:
Plug with attached cable.
Electrical (Receiver)
Voltage:
20 to 32 VDC.
Maximum ripple voltage:
30% of nominal (peak to peak).
Current (24 VDC):
Standby:
10.0 mA maximum.
Alarm:
28.4 mA maximum.
Trouble:
27.1 mA maximum.
Start-up surge:
19.0 mA maximum.
Relay contacts:
0.5 A at 30 VAC/DC.
Reset time:
0.6 seconds maximum.
Start-up time:
1 minute maximum (after 5 minute reset).
Power loss:
Retain memory for 5 minute minimum.
Electrical (Transmitter)
Voltage:
18.8 to 32.0 VDC.
Maximum ripple voltage:
30% of nominal (peak to peak).
Current (24 VDC,
standby and alarm
):
10.0 mA max.
ENGINEERING SPECIFICATIONS
The projected beam type smoke detector shall be a 4-wire
24 VDC device to be used with UL listed separately sup-
plied four-wire control panels only. Unit shall be listed to
UL 268 and shall consist of a separate transmitter and
receiver capable of being powered separately or together.
The detector shall operate in either a short range (30' -
100') or long range (100' - 330') mode. The temperature
range of the beam shall be -22°F to 131°F. The detector
shall feature a bank of four alignment LEDs on both the
receiver and transmitter that are used to ensure proper
alignment of unit without special tools. Beam detector
shall feature automatic gain control which will compensate
for gradual signal deterioration from dirt accumulation on
lenses. Unit shall include both ceiling and wall mounting
brackets. Testing shall be carried out using calibrated test
filters or magnet activated remote test station.
WIRING DIAGRAMS
6424 Remote Outputs
Remote Test Station Connection
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