Inductive Proximity Sensors
Bulletin 871C
Plastic Face/Plastic Barrel or Nickel-Plated Brass Barrel
f
Description
Bulletin 871C inductive proximity
sensors are self-contained, general
purpose, solid-state devices designed
to sense the presence of ferrous and
non-ferrous metal objects without
touching them.
The switch body consists of a plastic
face and either a nickel-plated brass
barrel or plastic barrel. The electronic
circuitry is potted for protection against
shock, vibration, and contamination.
These sensors are available in 3, 4, 5,
8, 12, 18 and 30mm diameters, with
smooth or threaded barrels. Connection
options include a 2m cable, micro
quick-disconnect, and pico
quick-disconnect.
Features
S
Cable or quick-disconnect styles
S
Short circuit protectionÊ
S
Overload protectionÊ
S
Transient noise protection
S
False pulse protection
S
Reverse polarity protection
S
CE marked for all applicable
directives (most models)
Styles
DC 3-Wire Small Diameter page R2–84
DC 3-Wire Extended
Temperature Range . . . . . . page R2–87
AC 2-Wire Full-Featured . . page R2–89
AC 2-Wire Plastic Barrel . . page R2–92
NAMUR Intrinsically Safe . page R2–94
Analog Output . . . . . . . . . . page R2–97
Accessories
Cordsets . . . . . . . . . . . . . . . . page R8–1
Conduit Adaptors . . . . . . . page R2–195
Mounting Brackets,
Spring Return Style . . . . . page R2–196
Mounting Brackets,
Swivel/Tilt Style . . . . . . . . page R2–198
Mounting Brackets,
Right Angle Style . . . . . . . page R2–199
Mounting Brackets,
Clamp Style . . . . . . . . . . . page R2–200
End Caps . . . . . . . . . . . . . page R2–206
Mounting Nuts . . . . . . . . . page R2–207
Lock Washers . . . . . . . . . . page R2–209
General Information
Torque Chart . . . . . . . . . . . page R2–211
Metric/English
Conversion Chart . . . . . . . . page R11–6
Ê
AC full-featured and DC models only.
R2–83
Inductive Proximity Sensors
871C 3-Wire DC
Plastic Face/Small Threaded or Smooth Nickel-Plated Brass Barrel
Specifications
Barrel Diameter
871C DC Cable Style
Smooth Barrel
3, 4mm
Load Current
Leakage Current
Operating Voltage
Voltage Drop
Repeatability
Hysteresis
871C DC Cable Style
Threaded Barrel
4, 5mm
False Pulse Protection
Transient Noise Protection
Reverse Polarity Protection
Short Circuit Protection
Approvals
871C DC Cable Style
Smooth Barrel
4mm
Enclosure
Connections
≤100mA
≤0.1mA
10-30V DC
≤2.5V
≤5%
15% typical
Incorporated
No
Incorporated
Incorporated (most models)
CE marked for all applicable directives (except for 3mm models)
NEMA 1, 2, 3, 4, 12, 13 IP67 (cable only) IP65 (qd only) (IEC 529);
Nickel plated brass barrel
Cable: 2m (6.5ft) length
3 conductor PVC
Quick Disconnect: 3 pin pico style
Red or Yellow: Output energized
-25°C to +70°C (-13°F to +158°F)
30g, 11ms
55Hz, 1mm amplitude, 3 planes
Incorporated
3mm
4, 5mm
≤200mA
LED
Operating Temperature
871C DC Pico Quick Disconnect
Style Threaded Barrel
5mm
Correction Factors
Target Material
Shock
Vibration
Correction Factor
1.0
0.7-0.8
0.4-0.5
0.3-0.4
0.3-0.4
Features
S
3-wire operation
S
3-conductor, 3-pin or 4-pin
connection
S
10–30V DC
S
Normally open or normally closed
output
S
False pulse, transient noise, reverse
polarity and short circuit protections
(most models)
S
CE marked for all applicable
directives (except for 3mm models)
Steel
Stainless Steel
Brass
Aluminum
Copper
R2–84
Inductive Proximity Sensors
871C 3-Wire DC
Plastic Face/Small Threaded or Smooth Nickel-Plated Brass Barrel
Product Selection
Barrel
Diameter
3mm
Barrel
Type
Smooth
Nominal Sensing Distance
mm (in)
0.6 (0.02)
0 6 (0 02)
Shielded
Y
Output
Configuration
NPN
N.O.
NO
PNP
NPN
Switching
Frequency (Hz)
Catalog Number
Cable Style
871C-DM1NN3-E2
Pico QD Style
3000
871C-DM1NP3-E2
871C-DM1NN4-E2
871C-DM1NN4-P3
4mm
Smooth
0.8 (0.03)
0 8 (0 03)
Y
N.O.
NO
PNP
NPN
3000
871C-DM1NP4-E2
871C-D1NN4-E2
4mm
Threaded
0.6 (0.02)
0 6 (0 02)
Y
N.O.
NO
PNP
NPN
3000
871C-D1NP4-E2
871C-D1NN5-E2
871C-D1NN5-P3
871C-D1NP5-P3
889P-F3AB-2
5mm
Threaded
1 (0.04)
(0 04)
Y
N.O.
NO
PNP
3000
871C-D1NP5-E2
Recommended Standard QD Cordset (-2 = 2m (6.5ft))
QD Cordsets and Accessories
Description
Other Cordsets Available
Terminal Chambers
Mounting Brackets
End Caps
Mounting Nuts
Page Number
R8-2
R8-2
R2-196 - R2-200
R2-206
R2-207 - R2-208
R2–85
Inductive Proximity Sensors
871C 3-Wire DC
Plastic Face/Small Threaded or Smooth Nickel-Plated Brass Barrel
Dimensions—mm (inches)
Cable Style
Normally Open
LED
2m (6.5ft)
LED
+
2m (6.5ft)
+
NPN (Sinking)
10-30V DC
Brown
Load
-
Black
Blue
-
+
PNP (Sourcing)
10-30V DC
Brown
+
Black
Blue
Load
-
-
Wiring Diagram
A
B
A
C
B
Normally Closed
+
NPN (Sinking)
10-30V DC
Brown
+
Load
-
Black
Blue
-
+
PNP (Sourcing)
10-30V DC
Brown
+
Black
Blue
Load
-
-
Smooth
Threaded
mm (inches)
Smooth Diameter
3.0
4.0
M4 x 0.5
M5 x 0.5
Thread Size
Shielded
Y
Y
Y
Y
A
3.0 (0.12)
4.0 (0.16)
4.0 (0.16)
5.0 (0.20)
B
22.0 (0.87)
25.0 (0.98)
22.0 (0.87)
25.0 (0.98)
C
Pico QD Style
Normally Open
NPN (Sinking)
A
D
C
B
B
+
+
4
1 3
10-30V DC
PNP (Sourcing)
-
Load
+
+
10-30V DC
Load
-
-
LED
A
LED
Smooth
Threaded
4
1 3
-
mm (inches)
Smooth Diameter
4.0
M5 x 0.5
Thread Size
Shielded
Y
Y
A
4.0 (0.16)
5.0 (0.20)
B
38.0 (1.50)
38.0 (1.50)
C
19.0 (0.74)
23.0 (0.90)
D
R2–86
Inductive Proximity Sensors
871C 3-Wire DC Extended Temperature
Plastic Face/Threaded Nickel-Plated Brass Barrel
Specifications
Load Current
Leakage Current
Operating Voltage
Voltage Drop
Repeatability
871C DC Cable Style
12, 18, 30mm
Hysteresis
False Pulse Protection
Transient Noise Protection
Reverse Polarity Protection
Short Circuit Protection
Overload Protection
Approvals
871C DC Micro
Quick Disconnect Style
12, 18, 30mm
Enclosure
Connections
1-200mA
≤10µA
10-30V DC
≤2.4V
≤10%
≤15%
typical
Incorporated
Incorporated
Incorporated
Incorporated
Incorporated
CE marked for all applicable directives
NEMA 1, 2, 3, 4, 12, 13, IP67 (IEC 529 )
Nickel plated brass barrel
Cable: 2m (6.5ft) length
3 conductor PUR
Quick Disconnect: 4 pin micro style
Orange: Output Energized
-40°C to +100°C (-40°F to +212°F)
30g, 11ms
55Hz, 1mm amplitude, 3 planes
Correction Factors
Target Material
Steel
Stainless Steel
Brass
Aluminum
Copper
LED
Description
Bulletin 871C inductive proximity
sensors are self-contained, solid state
devices designed for most industrial
applications where it is required to
sense the presence of metal objects
without touching them. These special
extended temperature models are ideal
for industrial environments where
temperatures can reach as high as
212_F (100_C) or as low as –40_F
(–40_C). They are available for current
source (PNP) operation with a normally
open output.
Each switch has a plastic face and a
nickel-plated brass housing which meet
NEMA 1, 2, 3, 4, 12, 13 and IP67 (IEC
529) enclosure standards. The
electronic circuitry is potted for
protection against shock, vibration, and
contamination.
These sensors are available in 12, 18,
and 30mm diameters. Connection
options include: 2m (6.5ft) PUR cable or
micro quick-disconnect (4 pin,
1 keyway).
Operating Temperature
Shock
Vibration
Features
S
3-wire operation
S
3-conductor or 4-pin connection
S
10–30V DC
S
Extended temperature range
S
Normally open output
S
Short circuit, false pulse, reverse
polarity, overload and transient noise
protection
S
CE marked for all applicable
directives
Correction Factor
1.0
0.9
0.5
0.45
0.4
R2–87
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