Rockwell Automation 42BA User Manual

PHOTOSWITCH

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

Installation Instructions



Bulletin 42BA Miniature Rectangular

Description

Background suppression sensing is designed to sense small
objects over a short range. Objects beyond its range of
sensing are generally rejected. The near and far limits of the
sensing range are dependent upon the reflectivity of the object
and the senstivity setting.

Two package sizes are available. Smaller 10.3mm x 15mm x

25.4mm sensors can be selected when precise, short range
sensing is required. Larger sensors offer greater sensing
ranges to 7.87in (200mm).

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

Features

S 350 s response time
S Dual LED indicators: output (red), stability (green)
S Sensitivity adjustment potentiometer
S Choice of visible red or infrared light source
S Switch selectable light or dark operate
S Stability diagnostic output (NPN output versions only)
S Short-circuit protection (sensor output only)

Dimensions—mm (inches)

Cable Versions
42BA--S2LNAE--A2
42BA--S2LPAE--A2

42BA--S1LNAG--A2
42BA--S1LPAG--A2

Features (continued)

S Reverse polarity protection
S False pulse protection
S Transient noise protection

General Specifications

Relative Humidity 85% max

Ambient Temperature -- 1 3 F to +131F(--25Cto+55C)

Lens Material Polyarylate (units with 3cm or 5cm sensing range) or

Housing Material Polyarylate (units with 3cm or 5cm sensing range) or

Operating Environment NEMA,1,4,6P,12,13andIP67

Approvals UL listed and CSA certified, class 2 source required

Weight 50 grams (1.76 oz.)

Cable Versions
42BA--S2LNAA--A2
42BA--S2LPAA--A2

Polyether resin (units with 10cm or 20cm sensing
range)

ABS resin (units with 10cm or 20cm sensing range)

42BA--S2LPAA--A2
42BA--S2LNAC--A2
42BA--S2LPAC--A2
42BA--S2LNAA--A2

80 grams (2.8 oz.)

42BA--S2LPAE--A2
42BA--S2LNAG- -A2
42BA--S2LPAG--A2
42BA--S2LNAE--A2

42BA--S2LNAC--A2
42BA--S2LPAC--A2

Lens

Optical Axis

17.5

(0.69)

Stability Indicator

Output Indicator

2--Dia. 3.1 (0.122)

2Places

29

(1.144)

25

(0.984)

3

(0.118)

Sensitivity Potentiometer

Light Operate/Dark

13.4

(0.527)

8

(0.314)

8

(0.314)

Operate Switch

2

(0.078)

35

(1.377)

(0.118)

Stability Indicator

Output Indicator

15

(0.590)

2-- Dia. 3.1 (0.122)

2Places

Lens

Optical Axis

12.7
(0.5)

3

19

(0.748)

(0.125)

3.2

3

(0.118)

1

25.4
(1.0)

(0.078)

Light Operate/Dark

Operate Switch

2

Sensitivity Potentiometer

10.3

(0.040)

L.O.

D.O.

3

(0.118)

16.4

(0.645)

Wiring

NPN Output PNP Output

Note: Details regarding connection of Allen-Bradley Bulletin 42BA photoelectric sensors to Allen-Bradley programmable controllers can be found in publication

42BCFK--7.0.

Cable

Brown: +12V--24V DC

Black: Output

Orange: Stability Output

Blue: --DC

Load

Load

Cable

Brown: +12V--24V DC

Black: Output

Load

Blue: --DC

Detection Direction

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.

Target

Background Suppression

Field of View 42BA--S2: 9

Transmitting LED Infrared 880nm for 42BA--S1LNAG-- A2 and

Visible red 700nm for all other models

Connections 4-conductor 500V PVC

42BA--S1: 5

42BA--S1LPAG--A2

jacketedcable6.5ft(2m)

3-conductor 500V PVC

jacketedcable6.5ft(2m)

Output Characteristics

Max

Operating

Voltage

12--24V DC 10%

Supply

Current

27mA

30mA

33mA

Output

Energized

Light/Dark
Selectable

Typ e

NPN

PNP Output: 100mA

Load

Current

Output: 100mA,

Stability: 50mA

Background Suppression

Operating Distance with White Paper

Min Sensitivity Max Sensitivity Catalog Number

1.2cm--2.5cm

(0.47in--0.98in)

0.95cm--3.9cm
(0.37in--1.54in)

1.7cm--7.5cm

(0.67in--2.95in)

2.5cm--16cm

(0.98in--6.29in)

Max

Leakage

Response

Current

0.5mA 350s

Time

0.2cm--3cm

(0.078in--1.18in)

0.27cm--5cm

(0.106in--1.97in)

0.6cm--10cm

(0.24in--3.94in)

0.1cm--20cm

(0.039in--7.87in)

Size

10.3mm x
15mm x

25.4mm

13.4mm x
25mm x

35mm

10.3mm x
15mm x

25.4mm

13.4mm x
25mm x

35mm

42BA- S2LNAA- A2
42BA- S2LP AA-A2

42BA- S2LNAC- A2
42BA- S2LP AC-A2

42BA- S2LNAE- A2
42BA- S2LPAE- A2

42BA- S1LNAG- A2
42BA- S1LPAG-A2

Catalog Number

Cable

42BA- S2LNAA- A2

42BA- S2LNAC- A2

42BA- S2LNAE- A2

42BA- S1LNAG- A2

42BA- S2LPAA-A2

42BA- S2LPAC-A2

42BA- S2LPAE-A2

42BA- S1LPAG- A2

Publication 75009-- 012-- 01(C)

April 2004

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