1
PG.05D.14.T.E
June 2000
E51 Limit Switch Style,
Factory Sealed 6P+
Inductive Proximity Sensors
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . 1
Model Selection, Sensors . . . . . . . . . 2
Wiring Diagrams . . . . . . . . . . . . . . . . 2
Model Selection, Accessories . . . . . .3
Specifications . . . . . . . . . . . . . . . . . . . 4
Dimensions . . . . . . . . . . . . . . . . . . . . .4
E51 6P+ Inductive Proximity Sensors
are fully sealed, pre-wired and
designed specifically to ensure
reliability under the most adverse
of environmental conditions. They
have been proven to withstand the
penetrating properties of dirt, dust,
grit, extreme temperatures and
humidity. The unitized design elimi-
nates plug-in connections that can
lead to reliability problems in rugged
environments.
For the most current information
on this product, visit our web site at:
www.sensingsolutions.com
Inductive Proximity Sensors
E51 Limit Switch Style, Factory Sealed 6P+
Product Features
■
The one-piece body and sensing head are both epoxy filled to protect
internal components from contamination
■
The head is hard-wired to the sensor body to ensure trouble-free
performance
■
Choose from top and side sensing heads
■
Side sensing heads can be rotated to any of four positions
■
Mounting dimensions allow direct replacement of worn out limit switches
■
Rugged zinc die cast construction withstands physical abuse
■
Connection options include pre-wired cable, body mounted connector and
pigtail connector
Unitized 6P+ Sensors Are Built for Reliable Operation and Long
Life in Hostile Environments
For Customer Service in the U.S. call
1-800-356-1243,
in Canada call
1-800-268-3578.
For Application Assistance in the U.S. and Canada
call
1-800-426-9184.
PG.05D.14.T.E
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June 2000
Inductive Proximity Sensors
E51 Limit Switch Style, Factory Sealed 6P+
Model Selection — Unitized Sensors — Factory Sealed
6P+
a
Sensor head is hard wired to sensor body and cannot be detached. Side sensing head can be unfastened and rotated to any of four positions.
b
Switch bases feature 8 feet of SOOW-A cable. Other connection options are available:
c
Sensor heads feature color coded target symbols: Yellow for standard frequency; Green for alternate frequency.
Wiring Diagrams
(Pin numbers are for reference, rely on pin location when wiring)
Assembled
Sensor with
8 Foot Cable
b
2-Wire Sensors 4-Wire Sensors
Operating
Voltage 20 – 264V AC/DC 120V AC 10 – 30V DC
Output N.O. N.C. N.O. and N.C.
Complementary
N.O. and N.C. Complementary
PNP NPN
Sensor Heads
a
Sensing Range Shielding Frequency
c
Catalog Number — Assembled Sensors (Head Hard Wired to Sensor Body)
Top Sensing
a
0.51 inches
(13 mm)
Shielded Standard
E51ALT16PU E51BLT16PU E51CLT16PU E51PLT16PU E51NLT16PU
Alternate
E51ALT26PU E51BLT26PU E51CLT26PU E51PLT26PU E51NLT26PU
0.94 inches
(24 mm)
Unshielded Standard
E51ALT56PU E51BLT56PU E51CLT56PU E51PLT56PU E51NLT56PU
Alternate
E51ALT66PU E51BLT66PU E51CLT66PU E51PLT66PU E51NLT66PU
Side Sensing
a
0.51 inches
(13 mm)
Shielded Standard
E51ALS16PU E51BLS16PU E51CLS16PU E51PLS16PU E51NLS16PU
Alternate
E51ALS26PU E51BLS26PU E51CLS26PU E51PLS26PU E51NLS26PU
0.94 inches
(24 mm)
Unshielded Standard
E51ALS56PU E51BLS56PU E51CLS56PU E51PLS56PU E51NLS56PU
Alternate
E51ALS66PU E51BLS66PU E51CLS66PU E51PLS66PU E51NLS66PU
Connection Option Instructions Example
Mini-Connector mounted on 3 foot (900 mm) pigtail cable
(3-pin for 2-wire sensors; 5-pin for 4-wire sensors)
Add the letter
T
before
U
E51ALT16PTU
Mini-Connector mounted to switch base
(3-pin for 2-wire sensors; 5-pin for 4-wire sensors)
Add the letter
C
before
U
E51ALT16PCU
Cable longer than 8 feet, add required length in 1 foot incre-
ments to listed Catalog Number — 20 foot maximum
Add length in feet
to end of Catalog
Number
E51ALT16PU12
for 12 feet
Operating Voltage Output Cable Models Mini-Connector Models (Face View Male Shown)
2-Wire Sensors
20 – 264V AC or DC
50/60 Hz
N.O. or N.C. (N.O. shown)
4-Wire Sensors
120V AC
50/60 Hz
N.O. and N.C.
10 – 30V DC N.O. and N.C.
NPN
N.O. and N.C.
PNP
21
43
L2
or (-)
L1
or +V Load
Black
White
Green
21
43 L2
L1
Load
Load
Black White
Orange
Red
Green
Load
Load
N.C. N.O.
L2 L1
21
43 (-)
+V
Load
Load
Black White
Orange
Red
Green
(-) +V
Load
Load
N.O.
N.C.
21
43 (-)
+V
Load
Load
Black White
Orange
Red
Green
(-) +V
Load
Load
N.C. N.O.
L1 or
(-) L2
or +V
Load
3
PG.05D.14.T.E
June 2000
Inductive Proximity Sensors
E51 Limit Switch Style, Factory Sealed 6P+
Model Selection — Accessories
Description Catalog
Number
Approximate Dimensions in Inches [mm] Except as Noted
Universal Mounting Bracket 1 hole, includes mounting hardware,
stainless steel
E51KH2
Universal Mounting Bracket 2 hole, includes mounting hardware, steel
E51KH4
Machine Mounting Bracket Zinc die cast construction
E50KH3 NOTE:
Dimensions in mm [Inches]
Stand-Off Mounting Bracket Steel construction
E51KH3 NOTE:
Dimensions in mm [Inches]
Connector Cables A variety of cables, connector blocks and
accessories
See
PG.05.05.T.E
PG.05D.14.T.E
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June 2000
Specifications
Approximate Dimensions in mm [Inches]
Output Rating (NEMA D150)
AC/DC Models
AC Models
DC Models
0.5A continuous
1A continuous
0.6A continuous
Protection Latching short circuit protection on 2-wire AC/DC and 3-wire DC models
Switching Rate AC models: 15 Hz; DC models: 50 Hz
Indicator LEDs Lights when output is ON. One LED for each output
Alternate Frequency Standard and alternate frequencies allow side-by-side operation without interference
Enclosure Material Cast metal
Gasket Material Zinc die cast
Enclosure Ratings NEMA 3, 3S, 4, 4X, 6, 6P, 12 and 13 (IP68)
Temperature Range -13° to 158°F (-25° to 70°C)
Torque Requirements Switch Body Screws: 25 – 30 in-lb; Sensing Head Screws: 14 – 18 in-lb
Inductive Proximity Sensors
E51 Limit Switch Style, Factory Sealed 6P+
1
Can accommodate both U.S., 29.4 [1.16] x 59.5 [2.34] and
DIN, 30 [1.18] x 60 [2.36], mounting dimensions.
