Inductive Proximity Sensors
2–105
Description
Bulletin
871U inductive proximity
sensors are self-contained, solid state
devices designed to sense the
presence of metal objects without
touching them. These special
isolated-output models are rated for
1000V minimum from output to output
(dual output models only) and up to
2500V minimum from input to output.
The electronic circuitry is potted for
protection against shock, vibration and
contamination. The switch is enclosed
by a plastic face and a threaded
nickel-plated brass barrel which meet
NEMA 3, 4, 6P
, 12, 13 and IP67
(IEC529) standards.
These sensors are available in 12 and
18mm diameters. Connection options
include a 3m (10ft) PVC cable and mini
quick-disconnect.
Features
S
4-wire or 6-wire operation
S4-conductor
, 6-conductor
, 5-pin or
6-pin connection
S11–52V DC and 15–132V AC
S
Normally open or complementary
(N.O. and N.C.) isolated outputs
SFalse pulse and transient noise
protection
S
Reverse polarity protection on DC
output
STTL compatible
S
UL listed, CSA certified, and CE
marked for all applicable directives
Styles
AC/DC 4- or 6-Wire
page 2–106.
. . . . .
Accessories
Quick-Disconnect Cables page 5–1
. . .
General Information
Torque
Chart
page 2–203.
. . . . . . . . . . .
Metric/English
Conversion Chart
page 11–1
. . . . . . . . .
Bulletin
871U
Plastic Face/Threaded Nickel-Plated Brass Barrel
Inductive Proximity Sensors
2–106
871U AC/DC Mini
Quick-Disconnect Style
12, 18mm
page
2–107
871U AC/DC Cable Style
12, 18mm
page
2–107
Features
S4-wire
or 6-wire operation
S4-conductor
, 6-conductor
, 5-pin or
6-pin connection
S11–52V DC and 15–132V AC
S
Normally open or complementary
(N.O. and N.C.) isolated outputs
SFalse pulse and transient noise
protection
S
Reverse polarity protection on DC
output
STTL compatible
S
UL listed, CSA certified, and CE
marked for all applicable directives
Specifications
Correction Factors
Target
Material Unshielded Shielded
Steel 1.0 1.0
Stainless
Steel
0.50–0.90 0.35–0.65
Brass 0.50 0.30
Aluminum 0.45 0.25
Copper 0.40 0.30
871U
4-W
ire or 6-W
ire AC/DC Isolated Output
Plastic Face/Threaded Nickel-Plated Brass Barrel
Load Current
Inrush Current (1 cycle)
Supply Current
Leakage Current
Operating Voltage
Output Supply Voltage
Voltage Drop
Isolation Voltage
Repeatability
Hysteresis
False Pulse Protection
Reverse Polarity Protection
(DC output)
Transient Noise Protection
Agency Approvals
Enclosure
Connections
LED
Operating Temperature
≤50mA at 50°C (122°F)
≤30mA at 70°C (158°F)
≤200mA
≤25mA
≤200µA for 4 wire
≤600µA for 6 wire
11–52V DC or 15–132V AC
5–150V DC or 15–132V AC
0.52V at 10mA, 2.6V at 50mA
Input to output: 2500V min.
Output to output: 1000V min. (dual output only)
≤10%
10% typical
Incorporated
Incorporated
Incorporated
UL listed, CSA certified, and CE marked for all applicable directives
NEMA 3, 4, 6P, 12, 13, IP67 (IEC 529)
Nickel-plated brass barrel
Cable: 3m (10ft) length
Single Output—4-conductor PVC
Dual Output—6-conductor PVC
Quick-Disconnect:
Single Output—5-pin mini style
Dual Output—6-pin mini style
Red: Output Energized
–25°C to +70°C (–13°F to +158°F)
Inductive Proximity Sensors
2–107
Selection Guide
B rrel
Nomin l Sensing Dist nce
Otpt
Switching
Freq ency
Wiring
Catalog Number
Barrel
Dia.
Nominal Sensing Distance
mm (inches) Shielded
Output
Configuration
Frequency
(Hz)
Wiring
Diagram Cable Style Mini QD 5-pin Style Mini QD 6-pin Style
12mm 4 (0.16) N 180 871U–V4B12 871U–V4K12 —
5 (0.20)
YN.O. 125 A871U–V5A18 871U–V5J18 —
18mm
8 (0.31)
N 100 871U–V8B18 871U–V8K18 —
18mm
5 (0.20)
Y
NO ndNC
100
B
871U–X5A18 —871U–X5J18
8 (0.31)
N
N.O. and N.C. 100 B
871U–X8B18 —871U–X8K18
Recommended Standard QD Cordset (–6F = 1.8m (6ft), –12F = 3.6m (12ft)) 889N–F5AFC–6F 889N–F6AFC–12F
QD Cordsets and Accessories
Description Page Number
Other Cordsets Available 5–8
Terminal Chambers 5–19
Mounting Brackets 2–188 – 2–192
End Caps 2–198
Mounting Nuts 2–199 – 2–200
Dimensions—mm (inches)
LED D
B
C
E
F
A
7/8–16un–2a
LED
7/8–16un–2a
A
B
CE
D
Cable
Style
Mini QD Style
Cable Style
Mini QD Style
Thre d
mm (inches)
Thre d
mm (inches)
Th
rea
d
Size Shielded A B C D E F
Th
rea
d
Size Shielded A B C D E
M12 X 1
Y12.0 94.9
50.8 (2.00)
0.8 (0.03)
64.3 3.6
M12X1
Y12.0 101.5
50.8 (2.00)
0.8 (0.03)
64.3
M12 X 1
N
12
.
0
(0.47)
94
.
9
(3.74)
43.4 (1.71)
8.1 (0.32)
64
.
3
(2.53)
3
.
6
(0.14) M12 X 1
N
12
.
0
(0.47)
101
.
5
(4.00)
43.4 (1.71)
8.1 (0.32)
64
.
3
(2.53)
M18X1
Y18.0 93.0
48.0 (1.89)
0.8 (0.03)
54.6 3.6
M18X1
Y18.0 96.9
50.2 (1.98)
0.8 (0.03)
54.6
M18 X 1
N
18
.
0
(0.71)
93
.
0
(3.66)
36.5 (1.44) 12.2 (0.48)
54
.
6
(2.15)
3
.
6
(0.14) M18 X 1
N
18
.
0
(0.71)
96
.
9
(3.81)
38.7 (1.52) 12.2 (0.48)
54
.
6
(2.15)
871U
4-W
ire or 6-W
ire AC/DC Isolated Output
Plastic Face/Threaded Nickel-Plated Brass Barrel
Inductive Proximity Sensors
2–108
Wiring Diagrams
Cable
Style
AInput
or Output can be AC or DC powered and of dif
ferent
amplitudes. Housing must be grounded mechanically
.
Blue
Black Load
–+
Brown
White
B
Input or Outputs can be AC or DC powered and of dif
ferent
amplitudes. Housing must be grounded mechanically
.
Blue
Black Load
–+
Brown
Orange
Red Load
White
Input
5–150V DC or
15–132V AC
( + ) Sink, DC
( – ) Source, DC
or AC
( – ) Sink, DC
( + ) Source, DC or AC
Output
Input
Output Output
Outputs
5–150V DC or
15–132V AC
( + ) Sink, DC
( – ) Source, DC
or AC
( – ) Sink, DC
( + ) Source, DC
or AC
( + ) Sink, DC
( – ) Source, DC
or AC
( – ) Sink, DC
( + ) Source, DC or AC
Normally Open
Normally Open and Normally Closed
1
1–52V DC or 15–132V AC
1
1–52V DC or 15–132V AC
Mini
QD Style
AInput
or Output can be AC or DC powered and of dif
ferent
amplitudes. Housing must be grounded mechanically
.
B
Input or Outputs can be AC or DC powered and of dif
ferent
amplitudes. Housing must be grounded mechanically
.
Load
–+
Input
Output
5
1
42
3
–+
Input
Output
5
1
42
3
6
Load
Load
5–150V DC or
15–132V AC
Outputs
Output
( + ) Sink, DC
( – ) Source, DC
or AC
( – ) Sink, DC
( + ) Source, DC or AC
5–150V DC or
15–132V AC
( – ) Sink, DC
( + ) Source, DC or AC
( + ) Sink, DC
( – ) Source, DC or AC
( – ) Sink, DC
( + ) Source, DC or AC
( + ) Sink, DC
( – ) Source, DC or AC
N.O.
N.C.
Normally Open
Normally Open and Normally Closed
1
1–52V DC or 15–132V AC
1
1–52V DC or 15–132V AC
871U
4-W
ire or 6-W
ire AC/DC Isolated Output
Plastic Face/Threaded Nickel-Plated Brass Barrel
