Page 1
Choose from Top
or Side Sensing
Head Can Be
Mounted in
Any of Four
Positions
Viton
Gasket Seals
Throughout
Rugged Zinc
Die Cast
Housing
Conduit, Cable
and Connector
Wiring Options
A Variety of
Receptacles
Meet Your
Wiring Needs
Factory
Assembled
Models with
Tamper-Proof
Screws for a
Lasting Seal
Sensor Bodies
Available for
AC and DC
Operation
August 2007
E51 Modular Limit Switch Style
Inductive Proximity Sensors
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . 1
Model Selection,
Assembled Sensors . . . . . . . . . . . . 2
Model Selection,
Sensor Heads . . . . . . . . . . . . . . . . . 3
Model Selection,
Sensor Bodies . . . . . . . . . . . . . . . . . 4
Model Selection,
Logic Modules. . . . . . . . . . . . . . . . . 4
Model Selection,
Receptacles . . . . . . . . . . . . . . . . . . . 5
Model Selection, Compatible
Connector Cables . . . . . . . . . . . . . . 5
Wiring Diagrams . . . . . . . . . . . . . . . . 6
Model Selection,
Accessories . . . . . . . . . . . . . . . . . . . 6
Specifications . . . . . . . . . . . . . . . . . . 8
Dimensions . . . . . . . . . . . . . . . . . . . . 8
Inductive Proximity Sensors
E51 Limit Switch Style, Modular
PG.05D.11.T.E
This Rugged Sensor Family Features Modular Components
for Versatile Sensing
1
The Cutler-Hammer
Proximity Sensor Family from
electrical business combines high
performance with a familiar limit
switch style housing. Modular, plugin components provide application
flexibility, ease of maintenance, less
downtime and reduced inventory.
Choose from 2-wire sensors with
AC/DC operation, or 4-wire sensors
in either AC or DC styles. Connection
options include terminal, miniconnector or various lengths of cable.
Choose from standard sensors that
detect all types of metallic targets.
The next page provides more detail
on these sensors.
Approvals
UL Listed
■
■
CSA Certified
(where shown)
Unless otherwise noted, the
products contained in this
document are not designed
or intended for use in human
safety applications.
®
E51 Inductive
Eaton’s
Product Features
■
Rugged construction is ideal for industrial environments
®
Viton
■
■
■
■
■
■
■
■
■
gaskets ensure a positive seal and high resistance to industry
chemicals
Direct replacement for worn out limit switches
Sensor heads and bodies feature captive screws to eliminate loss
All sensor heads include a selector switch to program output function to
either N.O. or N.C.
Sensor bodies feature bifurcated engagement prongs for a reliable
connection when plugging into receptacle stabs
Engagement key between sensor body and receptacle prevents improper
assembly
Sensors accommodate both U.S. and DIN mounting dimensions
Wiring terminals feature captive pressure plate saddles for #18 to #12 AWG
wire. A green screw identified ground terminal is also included
Logic modules are available to provide additional control functions
®
Viton
is a registered trademark of Dupont Dow
Elastomers.
PG.05D.11.T.E For more information visit:
For Customer Service in the U.S. call 1-877-ETN CARE (386-2273) ,
in Canada call 1-800-268-3578 .
For Application Assistance in the U.S. and Canada
call 1-800-426-9184 .
www.eaton.com
Page 2
Inductive Proximity Sensors
2
E51 Limit Switch Style, Modular
August 2007
Standard Sensors
Standard E51 sensors feature long
sensing ranges and a choice of top
or side sensing heads. Alternate
frequency units eliminate
interference when mounted close to
standard frequency units. Order
Model Selection — Assembled Sensors — Standard
Assembled
Sensor
Sensor Heads
Standard Sensing
Top Sensing 0.51 inches
Side Sensing 0.51 inches
All sensor heads feature a programmable output selector switch for N.O. or N.C. operation. Operation is as follows:
For This
Output Type:
N.O. Target Present Target Absent
N.C. Target Absent Target Present
Logic modules must be ordered separately, see Page 4 . These sensor bodies are rated NEMA 4, 4X and 13.
Fast turn product with typical one business day lead-time to shipment.
Receptacles feature terminal wiring with a 1/2” NPT thread at the conduit entrance. Other connection options are available:
Connection Option Catalog
20 mm thread at the conduit entrance
Mini-Connector termination with epoxy filled receptacle,
Page 5 for additional receptacle options
see
Pre-wired cable with epoxy filled receptacle 8 feet long
Stocked product, typical order quantities guaranteed in stock.
Sensing
Range
(13 mm)
0.94 inches
(24 mm)
(13 mm)
0.94 inches
(24 mm)
Set Selector Position:
“TARGET” “NO TARGET”
Sensor Body and
Receptacle
Shielding Frequency Catalog Number
Shielded Standard E51DT1 E51ALT1 E51CLT1 E51CNT1 E51PLT1 E51NLT1
Alternate E51DT2 E51ALT2 E51CLT2 E51CNT2 E51PLT2 E51NLT2
Unshielded Standard E51DT5 E51ALT5 E51CLT5 E51CNT5 E51PLT5 E51NLT5
Alternate E51DT6 E51ALT6 E51CLT6 E51CNT6 E51PLT6 E51NLT6
Shielded Standard E51DS1 E51ALS1 E51CLS1 E51CNS1 E51PLS1 E51NLS1
Alternate E51DS2 E51ALS2 E51CLS2 E51CNS2 E51PLS2 E51NLS2
Unshielded Standard E51DS5 E51ALS5 E51CLS5 E51CNS5 E51PLS5 E51NLS5
Alternate E51DS6 E51ALS6 E51CLS6 E51CNS6 E51PLS6 E51NLS6
sensors in component form, as
assembled plug-in units, or in a
sealed version where the sensor
body is factory assembled to an
epoxy filled receptacle with tamperproof screws to ensure a lasting
seal.
(with Terminal Wiring)
2-Wire Sensors 4-Wire Sensors
Operating
Voltage
Output N.O. or N.C.
Sensor Body
Receptacle
Sensor Head Only
20 – 264V
AC/DC
E51SAL E51SCL E51SCN
E51RA E51RC E51RCB E51RN E51RN
Catalog Number
Assembled Sensors with Head, Sensor Body and Receptacle
2-wire, 3-pin connector
4-wire, 5-pin connector
12 feet long
20 feet long
120V AC 10 – 30V DC
N.O. and N.C. Complementary N.O. and N.C. Complementary
Accepts Logic
Modules
Number
— 20 E51ALT120
CSMS3F3CY1602 P3 E51ALT1P3
CSMS5D5CY1602 P5 E51CLT1P5
— S E51ALT1S
— S12 E51ALT1S12
— S20 E51ALT1S20
E51SPL
PNP
Suffix Example
E51SNL
NPN
For more information visit: www.eaton.com
PG.05D.11.T.E
Page 3
Inductive Proximity Sensors
E51 Limit Switch Style, Modular
August 2007
Model Selection — Assembled Sensors — Standard (with Epoxy Filled Receptacles and Pre-wired Cables)
Assembled Sensor
Sensor Base Type with
8 Foot Cable
Operating
Voltage
Output N.O. or N.C.
Sensor Heads
Sensing Range Shielding Frequency Catalog Number
Sensor Head Only
Standard Sensing (Sensor Body Is Attached to Receptacle with Tamper-Proof Screws)
Top Sensing 0.51 inches
(13 mm)
0.94 inches
(24 mm)
Side Sensing 0.51 inches
(13 mm)
0.94 inches
(24 mm)
All sensor heads feature a programmable output selector switch for N.O. or N.C. operation. Operation is as follows:
For This
Output Type:
Set Selector Position:
“TARGET” “NO TARGET”
Shielded Standard E51DT1 E51ALT16P E51CLT16P E51PLT16P E51NLT16P
Alternate E51DT2 E51ALT26P E51CLT26P E51PLT26P E51NLT26P
Unshielded Standard E51DT5 E51ALT56P E51CLT56P E51PLT56P E51NLT56P
Alternate E51DT6 E51ALT66P E51CLT66P E51PLT66P E51NLT66P
Shielded Standard E51DS1 E51ALS16P E51CLS16P E51PLS16P E51NLS16P
Alternate E51DS2 E51ALS26P E51CLS26P E51PLS26P E51NLS26P
Unshielded Standard E51DS5 E51ALS56P E51CLS56P E51PLS56P E51NLS56P
Alternate E51DS6 E51ALS66P E51CLS66P E51PLS66P E51NLS66P
N.O. Target Present Target Absent
N.C. Target Absent Target Present
Switch bases feature 8 feet of SOOW-A cable. Other connection options are available:
Connection Option
Suffix Example
Mini-Connector mounted on 3 foot (900 mm) pigtail cable T E51ALT16PT
Mini-Connector mounted to switch base
Cable longer than 8 feet, add required length in 1 foot
C E51ALT16PC
(Length in feet) E51ALT16P12 for 12 feet
increments to listed Catalog Number — 20 foot maximum
See listing of compatible connector cables on Page 5 .
Fast turn product with typical one business day lead-time to shipment.
2-Wire Sensors 4-Wire Sensors
20 – 264V AC/DC 120V AC 10 – 30V DC
N.O. and N.C.
Complementary
Catalog Number
Assembled Sensors with Head and Sensor Base
3
N.O. and N.C. Complementary
PNP NPN
Model Selection — Sensor Heads
Sensing Range Shielding Frequency Target Material Catalog Number
Standard Sensing
Top Sensing 0.51 inches
(13 mm)
0.94 inches
(24 mm)
Side Sensing 0.51 inches
(13 mm)
0.94 inches
(24 mm)
All sensor heads feature a programmable output selector switch for N.O. or N.C. operation.
Operation is as follows:
For This
Output Type:
Set Selector Position:
“TARGET” “NO TARGET”
Shielded Standard All metals
Alternate All metals
Unshielded Standard All metals
Alternate All metals
Shielded Standard All metals
Alternate All metals
Unshielded Standard All metals
Alternate All metals
E51DT1
E51DT2
E51DT5
E51DT6
E51DS1
E51DS2
E51DS5
E51DS6
N.O. Target Present Target Absent
N.C. Target Absent Target Present
Fast turn product with typical one business day lead-time to shipment.
PG.05D.11.T.E For more information visit: www.eaton.com
Page 4
Inductive Proximity Sensors
4
E51 Limit Switch Style, Modular
Model Selection — Sensor Bodies
Operating Voltage Output Protection Output Rating Continuous Type Catalog Number
2-Wire Sensors
AC/DC 20 – 264V AC/DC,
50/60 Hz
1 output, load powered,
N.O. or N.C.,
programmable from head;
off state leakage current:
<1.7 mA at 120V AC/DC,
<2.0 mA at 240V AC
Latching short
circuit and
overload
0.5A —
August 2007
E51SAL
4-Wire Sensors
AC 120V AC,
50/60 Hz
2 complementary
outputs, line powered,
— 1.0A to 158° (70°), linearly
derated to 0.6A at 176° (80°)
—
N.O. and N.C.
E51SCN
Shown
DC 10 – 30V DC 2 complementary
outputs, line powered,
1.0A to 113° (45°), linearly
derated to 0.3A at 176° (80°)
Reverse polarity 0.6A to 104° (40°), linearly
derated to 0.36A at 176° (80°)
—
NPN
N.O. and N.C.
PNP
This sensor body is available in a factory-sealed, non plug-in configuration (with 8-foot cable), add 6P to listed Catalog Number.
Example: E51SAL 6P .
Sensor body is black. E51SCN sensor bodies are rated NEMA 4, 4X and 13.
This sensor accepts logic modules, as seen in chart below.
Fast turn product with typical one business day lead-time to shipment.
Model Selection — Logic Modules (for E51SCN Sensor Body Only)
Type Description Timing
■
ON and OFF
Delay
Adjustable delay between time
object is sensed and time
Range
0.15 to 15.0
seconds
switch function occurs
Adjustable delay between time
■
object leaves sensing field and
time switch transfers back to
Reset time is 25 mS minimum.
non-sensing state
Rated NEMA 4, 4X and 13.
Repeatability of the timing cycle is ±1% at constant voltage, ambient temperature and reset time.
Fast turn product with typical one business day lead-time to shipment.
Catalog
Number
E51MTB
E51SCL
E51SCN
E51SNL
E51SPL
For more information visit: www.eaton.com
PG.05D.11.T.E
Page 5
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—
Inductive Proximity Sensors
E51 Limit Switch Style, Modular
August 2007
Model Selection — Receptacles
Description Style Details Cable Length Catalog Number
Surface Mount Conduit entrance, front or rear
mounting
Mini-Connector Epoxy filled receptacle with pre-
wired Mini-Connector
Pigtail with Mini-Connector Epoxy filled receptacle with
Mini-Connector mounted on 3
foot (900 mm) cable
2-wire, AC/DC — —
4-wire, AC Gray —
Black
4-wire, DC — —
2-wire, AC/DC 3-pin —
4-wire, AC 5-pin —
4-wire, DC 5-pin —
2-wire, AC/DC 3-pin 3 feet (0.9m)
4-wire, AC 5-pin 3 feet (0.9m)
5
Conduit Entrance
1/2” NPT 20 mm
E51RA E51RA20
E51RC E51RC20
E51RCB E51RCB20
E51RN E51RN20
E51RAP3 —
E51RCP5 —
E51RNP5 —
E51RAPT3 —
E51RCPT5 —
Pre-wired Cable Epoxy filled receptacle with pre-
Black receptacle is for color compatibility with E51SCN sensor body.
Fast turn product with typical one business day lead-time to shipment.
See listing of compatible connector cables below.
Model Selection — Compatible Connector Cables
Standard Cables — Mini Style
Mini Style
Straight Female
Current Rating
@ 600V
3-pin: 13A
4-pin: 10A
For a full selection of connector cables, see PG.05.05.T.E .
Stocked product, typical order quantities guaranteed in stock.
wired 16 gauge, yellow jacketed,
type SOOW-A cable. Cable
enters through hole threaded for
conduit
Voltage
Style
— 3-pin 16 AWG 6 feet (2m)
AC/DC 4-pin,
— 5-pin 16 AWG 6 feet (2m)
Number
of Pins
4-wire
Gauge Length Catalog Number Pin Configuration/Wire Colors
16 AWG 6 feet (2m)
4-wire, DC 5-pin 3 feet (0.9m)
2-wire, AC/DC 3-conductor 8 feet (2.4m)
12 feet (3.6m)
20 feet (6m)
4-wire, AC 5-conductor 8 feet (2.4m)
12 feet (3.6m)
20 feet (6m)
4-wire, DC 5-conductor 8 feet (2.4m)
12 feet (3.6m)
20 feet (6m)
CSMS3F3CY1602
CSMS4A4CY1602
CSMS5D5CY1602
E51RNPT5 —
E51RAS E51RA20S
E51RAS12 —
E51RAS20 —
E51RCS E51RC20S
E51RCS12 —
E51RCS20 —
E51RNS E51RN20S
E51RNS12 —
E51RNS20 —
(Face View Female Shown)
1-Gree
2-Bl
-Whit
1-Bl
2-Bl
-Brow
4-Whit
1-Whit
2-R
4-Oran
-Blac
ree
PG.05D.11.T.E For more information visit: www.eaton.com
Page 6
Inductive Proximity Sensors
6
E51 Limit Switch Style, Modular
Wiring Diagrams (Pin numbers are for reference, rely on pin location when wiring)
Operating Voltage Output Terminal and Cable Models Mini-Connector Models (Face View Male Shown)
2-Wire Sensors
20 – 264V AC or DC
50/60 Hz
4-Wire Sensors
120V AC
50/60 Hz
10 – 30V DC N.O. and N.C.
Changing output switch on sensor head will reverse output function (N.O. becomes N.C., and N.C. becomes N.O.).
N.O. or N.C. (N.O. shown, can be
changed to N.C. using switch on
sensor head)
N.O. and N.C.
NPN
N.O. and N.C.
PNP
+V
Black
+V
Red
L1
or +V
Red
Black
L1
White
Load
Load
Red
Black
Green
21
Black
Load
L2
Green
21
43
21
43
Orange
White
Green
Orange
White
Green
Load
Load
or (-)
21
43
Load
Load
L2
Orange
White
(-)
(-)
43
L1 or
(-)
L2
(-)
(-)
Load
N.C.
Load
Load
N.C.
Load
N.O.
N.C.
N.O.
Load
Load
N.O.
Load
or +V
+V
L2
L1
+V
August 2007
Model Selection — Accessories
Description Catalog
Universal Mounting Bracket 1 hole, includes mounting hardware,
stainless steel
Universal Mounting Bracket 2 hole, includes mounting hardware, steel
Number
E51KH2
E51KH4
Approximate Dimensions in Inches [mm] Except Where Noted
Stocked product, typical order quantities guaranteed in stock.
For more information visit: www.eaton.com
PG.05D.11.T.E
Page 7
Inductive Proximity Sensors
E51 Limit Switch Style, Modular
August 2007
Model Selection — Accessories (Continued)
Description Catalog
Machine Mounting Bracket Zinc die cast construction E50KH3 NOTE: Dimensions in mm [Inches]
Number
Approximate Dimensions in Inches [mm] Except Where Noted
7
Stand-Off Mounting Bracket Steel construction
Remote Sensor Head Assembly Permits mounting sensor head up to 3 feet
(0.9m) from sensor body
E51KH3 NOTE: Dimensions in mm [Inches]
E51KRM
Connector Cables A variety of cables, connector blocks and
accessories
Stocked product, typical order quantities guaranteed in stock.
PG.05D.11.T.E For more information visit: www.eaton.com
See
PG.05.05.T.E
Page 8
Inductive Proximity Sensors
8
E51 Limit Switch Style, Modular
Specifications
Description Specification
Output Rating (NEMA D150)
AC/DC Models
AC Models
DC Models
Protection Latching short circuit protection on 2-wire AC/DC models; DC models: resettable short circuit protection
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 Zinc die cast
Gasket Material Viton
Enclosure Ratings NEMA 3, 3S, 4, 4X, 6, 6P, 12 and 13 (IP67)
Hazardous Locations Ratings
Class I
Class II
Class III
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
Vibration 10 – 55 Hz, 1 mm amplitude
Shock 30g, 11 mS, 1/2 sine wave
Humidity 95% non-condensing
Burden Current <25 mA
OFF-State Leakage DC Version: 120 µA; 2-wire AC: 1.9 mA maximum; 3-wire AC: 1.1 mA
ON-State Leakage <2.5V DC
Power-Up Delay <150 mS
0.5A continuous
1A continuous
0.6A continuous
E51SCN Sensor Body only: NEMA 4, 4X and 13
Division II — GRPS ABCD
Division II — GRPS F and G
Division 2
August 2007
Approximate Dimensions in mm [Inches]
Standard Sensors Sensor with Logic Module
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.
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.
For more information visit: www.eaton.com PG.05D.11.T.E
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