Rockwell Automation 871L DC Limit Switch Style Inductive User Manual

Rockwell Automation Equipment

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INSTALLATION INSTRUCTIONS

BULLETIN 871L DC LIMIT SWITCH STYLE INDUCTIVE PROXIMITY SENSOR

Head

Nominal Sensing

Distance

Switching

Frequency

Output

Part Number

Head

Size

Distance

mm (inches)

Shielded

Frequency

(Hz)

Output

Configuration

Conduit Opening

Mini Style QD

Micro Style QD

20 (0 79)

Y

150

NPN

871L-D20EN40-T3

871L-D20EN40-N4

871L-D20EN40-D4

40

20 (0.79)

Y

150

Programmable

PNP

871L-D20EP40-T3

871L-D20EP40-N4

871L-D20EP40-D4

40

40 (1 57)

N

70

Programmable

N.O. or N.C.

NPN

871L-D40EN40-T3

871L-D40EN40-N4

871L-D40EN40-D4

40 (1.57)

N

70

PNP

871L-D40EP40-T3

871L-D40EP40-N4

871L-D40EP40-D4

Specifications

Load Current 400mA

Leakage Current

10

µ

A

Operating Voltage 10-60V DC

Voltage Drop

2.4V

Repeatability

5

%

Hysteresis

20%

False Pulse Protection Incorporated

Transient Noise Protection Incorporated

Short Circuit Protection Incorporated

Overload Protection Incorporated

Reverse Polarity Protection Incorporated

Enclosure NEMA 3, 4, 6, 12 and 13

IP67 (IEC 529) Polyloy

Connections Conduit Opening:

1/2Ć14 NPT internal

thread with screw

terminals

Quick Disconnect:

4Ćpin mini style

4Ćpin micro style

3 LEDs Green:

Power (Blinks in SCP/Overload)

Orange:

Output Energized

Red:

Alignment Indicator

Operating Temperature -25

°

C to +70

°

C (-13

°

F to +158

°

F)

Shock and Vibration 30G, 10Ć55Hz

Correction Factors

Target Material

Correction Factor

Steel

1.0

Stainless Steel

0.90

Brass

0.50

Aluminum

0.45

Copper

0.40

Description

Bulletin 871L inductive proximity sensors are self-contained,
general purpose, solid state devices. These devices are
designed for most industrial applications where it is required to
sense the presence of metal objects (ferrous and non-ferrous)
without touching them.

The 871L limit switch style provides mounting
interchangeability, easy to wire terminations, rugged
construction, and superior sealing. The 25 (twenty-five)
position sensing head allows for twenty-four side views and
one top view.

Diagnostics

Green on indicates power on.
Orange on indicates output is energized.
Red off indicates product in correct alignment.
Green flashing indicates short circuit or overload.

Accessories

Optional Mating Cables

Part Number

Length

Description

871A-CS4-D2

2M (6.56 ft.)

4Ćpin, microĆstyle straight

871A-CS4-D4

4M (13.1 ft.)

4Ćpin, microĆstyle straight

871A-CS4-D5

5M (16.4 ft.)

4Ćpin, microĆstyle straight

871A-CRL4N-D2 2M (6.56 ft.)

4Ćpin, microĆstyle straight, NPN LED

871A-CRL4N-D4 4M (13.1 ft.)

4Ćpin, microĆstyle straight, NPN LED

871A-CRL4N-D5 5M (16.4 ft.)

4Ćpin, microĆstyle straight, NPN LED

871A-CRL4P-D2

2M (6.56 ft.)

4Ćpin, microĆstyle straight, PNP LED

871A-CRL4P-D4

4M (13.1 ft.)

4Ćpin, microĆstyle straight, PNP LED

871A-CRL4P-D5

5M (16.4 ft.)

4Ćpin, microĆstyle straight, PNP LED

871A-CRL3-N1

1M (3.28 ft.)

4Ćpin, miniĆstyle straight

871A-CRL3-N2

2M (6.56 ft.)

4Ćpin, miniĆstyle straight

871A-CRL3-N4

4M (13.1 ft.)

4Ćpin, miniĆstyle straight

871A-CRL3-N1

1M (3.28 ft.)

4Ćpin, miniĆstyle right angle

871A-CRL3-N2

2M (6.56 ft.)

4Ćpin, miniĆstyle right angle

871A-CRL3-N4

4M (13.1 ft.)

4Ćpin, miniĆstyle right angle

Wiring Diagrams

Conduit Opening

NPN (Sinking)

PNP (Sourcing)

+

10–60V DC

Load

T3

+

T2

+

Load

T1

+

T2

T3

10–60V DC

T1

Normally Open

NPN (Sinking)

PNP (Sourcing)

+

10–60V DC

Load

T3

+

T2

+

Load

T1

+

T2

T3

10–60V DC

T1

Normally Closed

1 4
2 3

Load

+

10–60V DC

+

+

Load

+

4

1

3

2

10–60V DC

NPN (Sinking)

PNP (Sourcing)

Normally Open or Normally Closed

Mini

Style QD

Micro

Style QD

+

Load

2 1

3 4

10–60V DC

+

Load

2 1

3 4

10–60V DC

NPN (Sinking)

PNP (Sourcing)

Normally Open or Normally Closed

+

+

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