System Sensor Model BEAM1224/BEAM1224S is a long range projected beam
smoke detector designed to provide open area protection. It is to be used
with UL-listed, separately supplied power (4-wire) control panels only. The
detector consists of a transmitter/receiver unit and a reflector. Smoke entering
the area between the transmitter/receiver and reflector causes a reduction in
signal. When the obscuration reaches alarm thresholds (chosen at the transmitter/
receiver unit), the detector generates an alarm signal. Complete blockage
of the beam causes a trouble signal. Slow changes in obscuration due to
a build up of dirt or dust on the lens of the detector are compensated for by
D400-73-00 2 I56-2294-004R
a microcontroller that continuously monitors the signal strength and periodically
updates the alarm and trouble thresholds. When the self-compensation
circuit reaches its limit, the detector generates a trouble signal, indicating the
need for service.
Range: 16 to 230 Feet (5 to 70m); 230 to 328 Feet (70 to 100m) using optional accessory BEAMLRK
Sensitivity: 25% to 50% Total Obscuration in 6 levels
Level 1 = 25%
Level 2 = 30%
Level 3 = 40%
Level 4 = 50%
Level 5 = 30% to 50% (Acclimate)
Level 6 = 40% to 50% (Acclimate)
Spacing: 30 to 60 Feet (9.1 to 18.3m)
Response Time: ALARM - 20 seconds typical; TROUBLE - 30 seconds typical
Trouble Conditions: Beam Blockage (96% or More Obscuration)
Improper Initial Alignment
Self-compensation limit reached (service needed)
In Alignment mode
Test/Reset Features: Integral Sensitivity Test Filter (BEAM1224S only)
Sensitivity Filter (Incremental scale on reflector)
Local Alarm Test Switch
Local Alarm Reset Switch
Remote Test and Reset Switch Capability (compatible with RTS451/RTS451KEY)
Indicators: ALARM - Remote Output, Local LED (red)
TROUBLE - Remote Output, Local LED (yellow), Blink Pattern Indicates Trouble Diagnostics
NORMAL OPERATION - Local LED (flashing green once every 5 sec.)
ALIGNMENT AIDS - Optical Gunsight (coarse adjustment), 00 to 99 Digital Display (fine adjustment)
RELAYS - Alarm; Trouble
SENSITIVITY - Digital Display Readout in Percent Obscuration
Temperature: –22°F to 131°F (–30°C to 55°C); NOTE: For applications below 32°F (0°C), see Special Applications on page 2
Humidity: 10% to 93% RH Non-condensing
Shipping Weight: Complete unit: 3.9 lbs. (1.77 kg)
Shipping Size: 15˝×10.5˝×6.5˝ (381mm × 267mm × 165mm)
Mounting: Wall only without optional accessories
Wiring: Plug-in Terminal Blocks (12 to 22AWG)
Adjustment Angle: }10° Horizontal and Vertical
Paintable Trim Ring: May be painted using enamel or acrylic type paints
Voltage: 10.2 to 32 VDC (BEAM1224); 15 to 32 VDC (BEAM1224S)
Maximum Ripple Voltage: 6.0 volts (Peak-to-peak); NOTE: ripple must not fall below minimum operating voltage specification
Current (24 VDC): Avg. Standby - 17mA Max.
Avg. Alarm - 38.5mA Max.
Avg. Trouble - 8.5mA Max.
Avg. Alignment - 28mA Max.
Current (Test Mode, BEAM1224S only): Peak Test- 500mA Max.
Relay Contacts: 0.5A at 30 VDC
Reset Time: 0.3 Seconds Max.
Start-up Time (after 2 min. reset): 60 sec. Max.
Alarm Verification Time: 5 sec. Max.
Remote Output (Alarm & Trouble): VOLTAGE - 15 to 32 VDC; NOTE: Output voltage same as device input voltage
CURRENT - 15mA maximum; 6mA minimum; NOTE: Output current is limited by 2.2Kohm resistor