Allen-Bradley 45LSP-2LNA1-P3, 45LSP-2LNA2-P4, 45LSP-2LNA1-P4, 45LSP-2LNA2-P3, 45LSP-2LNA3-P3 Installation Instructions Manual

Installation Instructions

IMPORTANT

45LSP Optical Fork PHOTOSWITCH Photoelectric Sensors
Installation Instructions

Catalog Numbers: 45LSP-2LNA1-P3, 45LSP-2LNA1-P4, 45LSP-2LNA2-P3, 45LSP-2LNA2-P4, 45LSP-2LNA3-P3,
45LSP-2LNA3-P4, 45LSP-2LNA4-P3, 45LSP-2LNA4-P4, 45LSP-2LPA1-P3, 45LSP-2LPA1-P4, 45LSP-2LPA2-P3,
45LSP-2LPA2-P4, 45LSP-2LPA3-P3, 45LSP-2LPA3-P4, 45LSP-2LPA4-P3, 45LSP-2LPA4-P4

SAVE THESE INSTRUCTIONS FOR FUTURE USE. Refer to http://ab.rockwellautomation.com/ for additional information.

Description

The 45LSP is a family of optical fork sensors housed in a plastic
enclosure. Fork sensors offer self-contained transmitted beam sensing,
ideal for applications that require reliable parts detection. A simple
push button teach-in sensitivity adjustment, several connection options
and multiple mounting features (via side thru-holes, rear threaded
inserts or optional dovetail bracketry) make the 45LSP an economical,
easy-to-use solution for typical applications such as small part
detection, edge detection, part counting, gear tooth detection and
dimension verification.

Features

• Detection of objects as small as 0.2 mm (0.0078 in.)

• Highly visible power and output LED indicators with output

indication along both sides of the fork

• Remote teach and teach button lock on 4-pin models

• Light or dark operate selectable

• Multiple mounting options: thru-holes, threaded holes and

dovetail

• Easy installation with no alignment required

• IP67 enclosure

User Interface

LED Color State Status

OFF Output de-energized

Orange

Green

ON Output energized

Flashing Teach mode or short circuit protective active

OFF Power is OFF

ON Power is ON

Specifications

cULus and CE Marked for all applicable directives

Certifications

Optical

Sensing Gap

Smallest Detectable Target

Light Source Visible red (640 nm)

Sensitivity Adjustment Teach button and remote teach

Electrical

Voltage 10…30V DC

Current Consumption 30 mA maximum

Protection Reverse Polarity and short circuit

Outputs

Response Time 250 µs

Output Type PNP or NPN

Output Mode Light or dark operate selectable

Output Current 100 mA maximum

Mechanical

Housing Material Polycarbonate

Connection Types 3-pin pico QD, 4-pin pico QD

Optional Accessories 44B-BKT dovetail mounting bracket and cordsets

Environmental

Environmental Rating IP67

Operating Temperature
[C(F)]

1

For detection of objects less than 0.9 m (0.035 in.), the object should be placed ≥ 10 mm
(0.39in.) away from the LED light source.

For use in NFPA 79 applications only
Adapters providing field wiring means are available from the

manufacturer. Refer to manufacturers information.

30 mm
(1.18 in.)

0.2 mm
(0.07 in.)

-10…+60 ° (14…140 °

1

50 mm
(1.97 in.)

0.2 mm (0.007 in.)

80 mm
(3.15 in.)

120 mm
(4.72 in.)

0.4 mm
(0.02 in.)

Flashing Teach mode

Teach button

Orange LED

Green LED

Orange LED

45LSP Optical Fork PHOTOSWITCH Photoelectric Sensors Installation Instructions

Brown (1)

+

–

Black (4)

White (2)

Blue (3)

Load

Brown (1)

Black (4)

White (2)

Blue (3)

Load

Brown (1)

+

–

Black (4)

Blue (3)

Load

Brown (1)
Black (4)

Blue (3)

Load

+

–

+

–

3

1

4

3

4

2

1

3-Pin

NPN ModelsPNP Models

4-pin3-pin4-pin

♦

♦

Operational Instructions

Sensitivity Adjustment

With no target present, press the teach button for approximately three
seconds until orange LEDs are flashing synchronously: first threshold is
taught. With the target present, press the teach button for
approximately one second. If the green LED flashes and stays on then
thresholds have been taught, and the sensor is ready to operate. If both
LEDs are flashing synchronously then the sensor cannot detect the
object and no thresholds have been taught.

Sensitivity Adjustment During a Running Process (optimum detection
of very small parts)

With the chosen running process being the only thing in the scanning
area, press the teach button for approximately three seconds until
orange LEDs are flashing synchronously. Press the teach button until a
minimum of one process cycle is completed. If the green LED flashes
and stays on then thresholds have been taught, and the sensor is ready to
operate. If both LEDs are flashing synchronously then the sensor
cannot detect the target and no thresholds have been taught.

L.O./D.O. Setup

Press the teach button for approximately 13 seconds. Orange LEDs
should flash alternately. When you release the button, the green LED
should remain flashing. When the green LED is flashing , the output is
inverted by pressing the button. The orange LED shows active
function. Do not press the button for 10 seconds. The green LED stops
flashing and the present output function is saved. The sensor is ready to
operate.

Maximum Sensitivity

With no target present, press the teach button for approximately three
seconds until orange LEDs are flashing synchronously. Again, with no
target present, press the teach button for one second. The sensor is set
to maximum sensitivity and is ready to operate.

Maximum Stability—Factory Setting (maximum resistance to
contamination)

Cover the light source. Press and hold the teach button until the orange
LEDs are flashing synchronously. Keep the light source covered, press
the teach button for one second. The sensor is set to maximum stability
and is ready to operate.

Modification of the Emitter Frequency in Case of Mutual Interference

Switch one sensor off. Press the teach button during power ON. The
orange LED flashes one time; frequency one, normal operation
(switching frequency 2 kHz). Keep the button pressed for another
three to five seconds. The orange LED flashes twice; frequency two,
normal operation (switching frequency 2 kHz). Keep the button
pressed for another three to five seconds. The orange LED flashes three
times; frequency one, detection of very small parts possible (switching
frequency 2 kHz). Keep the button pressed for another three to five
seconds. The orange LED flashes four times; frequency two, detection
of very small parts possible (switching frequency 1.5 kHz). Release the
button to place the sensor in operating mode. Switch other sensor on
again.

Wiring Diagrams

2 Rockwell Automation Publication 45LSP-IN001C-EN-P – November 2015

45LSP Optical Fork PHOTOSWITCH Photoelectric Sensors Installation Instructions

C

Teach-in
button

4

E

D

A

B

GF

10

(0.39)

5

(0.2)

4.5 (0.18)

12 (0.47)

4.5 (0.18)

8 (0.31)

4.2 (0.17) 3x Dia.

Dimensions [mm (in.)]

Fork Type A B C D E F G H I

30 mm 30 (1.18) 50 (1.97) 30 (1.18) 34 (1.34) 59.5 (2.34) 20 (0.78) — 62.2 (2.45) 71.7 (2.82)

50 mm 50 (1.97) 70 (2.76) 50 (1.97) 54 (2.13) 79.5 (3.13) 20 (0.78) 28 (1.10) 82.2 (3.24) 91.7 (3.61)

80 mm 80 (3.15) 100 (3.93) 80 (3.15) 54 (2.13) 79.5 (3.13) 20 (0.78) 2 x 28 (2.20) 112.2 (4.42) 91.7 (3.61)

120 mm 120 (4.72) 140 (5.51) 120 (4.72) 54 (2.13) 79.5 (3.13) 20 (0.78) 3 x 28 (3.30) 152.2 (5.99) 91.7 (3.61)

Optional Accessories

Description Cat.

Dovetail mounting bracket 44B-BKT

2 m (6.5 ft) 3-pin DC pico QD

2 m (6.5 ft) 4-pin DC pico QD

No.

889P- F3AB -

889P- F4AB -

2

2

Rockwell Automation Publication 45LSP-IN001C-EN-P – November 2015 3

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information, FAQs, and to sign up for product notification updates.

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distributor or Rockwell Automation representative, or visit

http://www.rockwellautomation.com/services/online-phone

Installation Assistance

If you experience a problem within the first 24 hours of installation, review the information that is contained in this manual. Yo u ca n c ont ac t
Customer Support for initial help in getting your product up and running.

United States or Canada 1.440.646.3434

Outside United States or Canada

Use the Worl dwide Locato r
Automation representative.

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you can find technical and application notes, sample code, and links to software service packs.

for software updates, support chats and forums, technical

.

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Publication 45LSP-IN001C-EN-P – November 2015 10000033147 Ver 02

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