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Rockwell Automation 42BT Background Suppression Sensor User Manual

Rockwell Automation Equipment

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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 detection 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)]

--25

…+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

Voltage

12

…24V DC

Current Consumption

30 mA max

Sensor Protection

Reverse polarity, short circuit

Outputs

Response Time

2 ms max.

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