Rockwell Automation 871L DC Limit Switch Style Inductive User Manual
Rockwell Automation Equipment
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
–
+
–
+