Rockwell Automation 42BC User Manual

Installation Instructions

PHOTOSWITCH

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.



Bulletin 42BC Rectangular

Description

The Bulletin 42BC offers high performance Long Range Background Suppression Diffuse photoelectric sensing. Sensing distances of up to 6.56ft (2m) are possible, making this sensor an ideal solution for many material handling applications.

Each Bulletin 42BC comes complete with a steel right angle mounting bracket which provides a variety of mounting options.

Features

S True Background Suppression Technology S Removable cover with screw terminal connections

S Dual LED indicators: output (red), stability (green) S Range adjustment potentiometer

Wiring

Terminal No.

24 V-240V AC/DC

Features (continued)

S Short-circuit protection (Solid State sensor output only) S Switch selectable light or dark operate S Reverse polarity protection S False pulse protection S Transient noise protection

General Specifications

Relative Humidity 85% max

Ambient Temperature -13°F to +131°F (-25°C to +55°C)

Lens Material Acrylic

Housing Material Polycarbonate

Operating

Environment

Approvals DC versions are UL listed and CSA certified, class 2

Weight 170 grams (6 oz)

Solid State Output TypeRelay Output Type

NEMA 1, 12, 13 and IP65

source required

Terminal No.

12V-24V DC

-DC

Dimensions—mm (inches)

Range Adjustment

Removable, seeĆthrough

snap on wiring Cover

23.5

(0.925)

Output 24-250V AC/DC 3A Max

Lens

(0.216)

PNP Output

NPN Output

Output Indicator

Light Operate/Dark

Operate Switch

Stability Indicator

5.5

(0.472)

(1.968)

(2.677)

(0.669)

2-Dia. 5.2 (0.204)

2 Places

(1.023)

(2.677)

(2.716)

Detection Direction

42BC-B1CRAL-T4

42BC-B1LBAL-T4

NPN/PNP

Light/Dark

24 240V AC/DC

30mA (DC)

S.P.S.T

3A (250V AC, 750VA)

Due to the detection method, the sensor must be positioned such that the target passes in one of the following directions.

Motion in up/down direction cannot be detected.

Long Range Background Suppression Diffuse

Field of View 3.5°

Transmitting LED Infrared 880nm

Connections 4 pressureĆtype screw

terminals

Targets are rarely as dark as 2.5% reflective. For practical purposes, data for 14% reflective targets is also provided.

Typical Suppression Quality for 1m Max Sensors

White Background

100% Reflective

Sensor Off

Near" 20.0cm (7.9in) 19.8cm (7.8in) 19.8cm (7.8in)

40.0cm (15.7in) 38.6cm (15.2in) 39.2cm (15.4in)

60.0cm (23.6in) 53.9cm (21.2in) 58.2cm (23in)

80.0cm (31.5in) 64.8cm (25.5in) 75.8cm (29.8in)

Far" 100.0cm (39.3in) 72.2cm (28.4in) 91.4cm (36in)

Black Target

2.5% Reflective Sensor On

Minimum Distance for Margin 2:1

Near Setting

Far Setting

Black Target

14% Reflective

Sensor On

Target

2.5% black 8cm (3.15in) 100% white 3cm (1.18in)

2.5% black 20cm (7.9in) 100% white 4cm (1.57in)

Catalog Number

42BC-B1LBAL-T4 42BC-B1CRAL-T4

Typical Suppression Quality for 2m Max Sensors

White Background

100% Reflective

Sensor Off

Near" 20.0cm (7.9in) 19.7cm (7.8in) 19.7cm (7.8in)

60.0cm (23.6in) 54.4cm (21.4in) 58.8cm (21.4in)

100.0cm (39.3in) 73.8cm (29.1in) 91.5cm (36in)

140.0cm (55.1in) 83.3cm (32.8in) 116.2cm (45.7in)

180.0cm (70.9in) 88.3cm (34.8in) 133.4cm (52.5in)

Far" 200.0cm (78.7in) 89.9cm (35.4in) 139.6cm (55in)

Black Target

2.5% Reflective Sensor On

Long Range Background Suppression Diffuse

Output Characteristics Catalog Number

Operating Voltage

12-24V DC ±10% 30mA

24-240V AC/DC 30mA (DC)

±10%

Current

4W (AC)

Supply

Output

Energized

Light/Dark Selectable

Type Max Load Current

NPN/PNP Selectable

S.P.S.T. 3A (250V AC, 750VA)

N.O. Relay

100mA 0.5mA 20ms

3A (30V DC, 90W)

Black Target

14% Reflective

Sensor On

Max Leakage

Current

Response

Time

Ċ 30ms

Catalog Number

42BC-B1LBAL-T4 42BC-B1CRAL-T4

Cable

42BC-B1LBAL-T4

42BC-B1LBAN-T4

42BC-B1CRAL-T4

42BC-B1CRAN-T4

Publication 75009–071–01(B)

August 1995

Printed in Japan