User Manual

1
Installation Instructions
Bulletin 42BT Long-Range Background Suppression
SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Refer to the product catalog pages for additional information.
Description
The Allen-Bradley 42BT family of long-range background
suppression is designed for the reliable detection of objects
while ignoring background reflectivity.
These sensors also provide consistent detec tion of objects
regardless of color at a specifically taught distance.
Features
S Visible light source for ease of alignment (1 m models)
S Range indicator allows for an easy readout of the settings
S Adjustable range settings
S Two sensing ranges: 1 m (3.28 ft) and 2 m (6.56 ft)
S Highly visible LED indicators
S Both NPN and PNP Outputs
S Compact IP65 rated enclosure
Sensor User Interface
Output
Indicator
Margin
Indicator
Range Adjustment
Selector
Light/Dark
Operate Switch
Range Adjustment
Display
LED Status
Green
OFF Low stability. Light intensity below 1.2X
ON High stability. Light intensity above 1.2X
Red
OFF Output OFF
ON
Output ON 
 LED is ON when sensor is in light operate (L.O.) mode and a target is detected, LED is OFF
when the sensor is in dark operate (D.O.) mode and the target is detected.
Specifications
Certifications cULus and CE marked for all applicable directives
Environmental
Operating Environment IP65
Operating
Temperature [C (F)]
-- 2 5 …+55° (--13…131°)
Vibration 10…55Hz, 1.5 mm amplitude; meets or exceeds IEC
60947--5--2
Shock 30 g with 1 ms pulse duration, meets or exceeds IEC
60947--5--2
Relative Humidity 35…85%
Ambient Light Immunity Incandescent light: 3000 lux; sunlight: 10,000 lux
Optical
Models Sensing Range Light Source
42BT--B2LBSL--* 0.2…1 m (0.66…3.28 ft) Visible red (650 nm)
42BT--B1LBSL--* 0.2…2 m (0.66…6.56 ft) Infrared (880 nm)
Adjustments 5--turn sensitivity potentiometer
Electrical
V oltage 12…24V DC
Current Consumption 30 mA max
Sensor Protection Reverse polarity, short circuit
Outputs
Response Time 2msmax.
Output Type PNP or NPN
Output Mode Light and dark operate selectable
Output Current 100 mA max.
Mechanical
Housing Material Polyarilate
Lens Material Polyarilate
Connection Types 2 m cable, 4-pin DC micro (M12) pigtail, 4-pin DC pico
(M8) pigtail
Supplied Accessories None
Optional Accessories Mounting brackets, cordsets