1
CSM_E2K-X_DS_E_7_1
Cylindrical Proximity Sensor
E2K-X
General-purpose Threaded
Capacitive Sensor
• Product lineup with M12, M18, and M30 models.
• Fixed sensing distance requires no sensitivity adjustment.
Be sure to read Safety Precautions on
page 5.
Ordering Information
Sensors [Refer to Dimensions on page 6.]
Accessories (Order Separately)
Mounting Brackets
Refer to Y92
@
for details.
Appearance Sensing distance Output configuration
Model
Operation mode
NO NC
M12
DC 3-wire, NPN E2K-X4ME1 2M E2K-X4ME2 2M
DC 3-wire, PNP E2K-X4MF1 2M E2K-X4MF2 2M
AC 2-wire E2K-X4MY1 2M E2K-X4MY2 2M
M18
DC 3-wire, NPN E2K-X8ME1 2M E2K-X8ME2 2M
DC 3-wire, PNP E2K-X8MF1 2M E2K-X8MF2 2M
AC 2-wire E2K-X8MY1 2M E2K-X8MY2 2M
M30
DC 3-wire, NPN E2K-X15ME1 2M E2K-X15ME2 2M
DC 3-wire, PNP E2K-X15MF1 2M E2K-X15MF2 2M
AC 2-wire E2K-X15MY1 2M E2K-X15MY2 2M
Unshielded
4 mm
8 mm
15 mm
2
E2K-X
Ratings and Specifications
*1. The above values are sensing distances for the standard sensing object. Refer to Engineering Data on page 3 for other materials.
*2. E and F Models (DC switching models): A full-wave rectification power supply of 24 VDC ±20% (average value) can be used.
Item Model
E2K-X4ME@,
E2K-X4MF@,
E2K-X4MY@
E2K-X8ME@,
E2K-X8MF@,
E2K-X8MY@
E2K-X15ME@,
E2K-X15MF@,
E2K-X15MY@
Sensing distance 4mm ±10% 8 mm ±10% 15 mm ±10%
Set distance *10 to 2.8 mm 0 to 5.6 mm 0 to 10 mm
Differential travel 4% to 20% of sensing distance
Detectable object Conductors and dielectrics
Standard sensing object Grounded metal plate: 50 × 50 × 1 mm
Response frequency E and F Models: 100 Hz, Y Models: 10 Hz
Power supply voltage*2
(operating voltage range)
E and F Models: 12 to 24 VDC (10 to 30 VDC)
Y Models: 100 to 220 VAC (90 to 250 VAC)
Current consumption E and F Models: 15 mA max.
Leakage current Y Models: 2.2 mA max. (Refer to page 4.)
Control
output
Load current E and F Models: 200 mA max.*2, Y Models: 10 to 200 mA
Residual voltage E and F Models: 2 V max. (Load current: 200 mA, Cable length: 2 m), Y Models: Refer to Engineering Data on
page 4.
Indicators E and F Models: Detection indicator (red), Y Models: Operation indicator (red)
Operation mode
(with sensing object
approaching)
E1, F1, and Y1 Models: NO
E2, F2, and Y2 Models: NC
Protection circuits E and F Models: Reverse polarity protection, Surge suppressor, load short-circuit protection, output reverse polar-
ity protection, Y Models: Surge suppressor
Ambient temperature
range Operating/Storage: −25 to 70°C (with no icing or condensation) Operating/Storage: −10 to 55°C
(with no icing or condensation)
Ambient humidity range Operating/Storage: 35% to 95% (with no condensation)
Temperature influence ±20% max. of sensing distance at 23°C in the operating temperature range
Voltage influence E and F Models: ±2% max. of sensing distance at rated voltage at rated voltage ±20%
Y Models: ±2% max. of sensing distance at rated voltage at rated voltage ±10%
Insulation resistance 50 MΩ min. (at 500 VDC) between current-carrying parts and case
Dielectric strength E and F Models: 1,000 VAC, 50/60 Hz for 1 min between current-carrying parts and case
Y Models: 2,000 VAC, 50/60 Hz for 1 min between current-carrying parts and case
Vibration resistance Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance Destruction: 500 m/s2 3 times each in X, Y, and Z directions
Degree of protection IP66 (IEC), in-house standards: oil-resistant
Connection method Pre-wired Models (Standard cable length: 2 m)
Weight (packed state) Approx. 65 g Approx. 145 g Approx. 205 g
Materi-
als
Case Heat-resistant ABS
Sensing surface
Clamping nuts Polyacetal
Accessories Instruction manual
Refer to the timing charts under I/O Circuit Diagrams on page 4 for details.
E2K-X
3
Engineering Data (Reference Value)
Sensing Area (Grounded Metal Plate)
E2K-X4M
Influence of Sensing Object Size and Material
E2K-X4M E2K-X8M E2K-X15M
Sensing Object Thickness and Material vs. Sensing Distance
E2K-X4M E2K-X8M E2K-X15M
−20−5
0
2
4
6
8
10
12
14
16
18
Y
X
E2K-X4M
E2K-X8M
E2K-X15M
2520151050−5−10−15
Distance
Y (mm)
E2K-X4M Sensing
E2K-X8M Sensing Head
E2K-X15M Sensing Head
Standard sensing
object Grounded
metal plate
50 × 50 × 1 mm
Distance X (mm)
20100
2
4
6
8
10
X
7060504030
d ×
d t = 3 mm
Grounded metal
Non-grounded metal
Glass
Phenol
Side length of sensing object: d (mm)
Acryl
Distance X (mm)
20100
5
10
15
20
25
X
7060504030
d ×
d t = 3 mm
Grounded metal
Non-grounded metal
Glass
Phenol
Side length of sensing object: d (mm)
Acryl
Distance X (mm)
5
0
1
2
3
4
5
Xt
25201510
50 ×
50
Thickness of sensing object: t (mm)
Grounded metal
Non-grounded metal
Glass
Phenol
Distance X (mm)
1050
2
4
6
8
10
Xt
252015
50 ×
50
Thickness of sensing object: t (mm)
Grounded metal
Non-grounded metal
Glass
Phenol
Acryl
Distance X (mm)
50
5
10
15
20
25
Xt
25201510
50 ×
50
Thickness of sensing object: t (mm)
Grounded metal
Non-grounded metal
Glass
Phenol
Acryl
Distance X (mm)
4
E2K-X
I/O Circuit Diagrams
DC 3-Wire Models (NPN)
DC 3-Wire Models (PNP)
AC 2-Wire Models
Leakage Current Residual Output Voltage
E2K-X@MY E2K-X@MY@at 100 VAC E2K-X@MY@at 200 VAC
0
1.0
1.5
2.0
300200100
V
mA
Power supply voltage (V)
(OFF)
Protective resistance
AC
power,
50/60Hz
Leakage current (mA)
40
60
80
100
120
0
20
5030201053
VL
100 VAC
V
A
ON
200100
OFF
Residual output voltage
Residual
Load Voltage
Load current
(
mA
)
Load voltage VL (V)
80
120
160
200
240
VL
200 VAC
V
A
ON
20
0
100503020
OFF
1053
0
40
Residual output voltage
Residual
Load
Voltage
Load current
(
mA
)
Load voltage VL (V)
Operation
mode Model Timing chart Output circuit
NO
E2K-X4ME1
E2K-X8ME1
E2K-X15ME1
NC
E2K-X4ME2
E2K-X8ME2
E2K-X15ME2
Present
Not present
Operate
Reset
High
Low
ON
OFF
Load (between brown
and black leads)
Sensing object
Output voltage (between
black and blue leads)
Detection indicator (red)
10 kΩ
0 V
Tr
+V
Proximity
Sensor
main
circuit
Brown
Blue
Black
Load
*1. Load current: 200 mA max.
*2. When a transistor is connected.
*1
*2
Present
Not present
Operate
Reset
High
Low
ON
OFF
Load (between brown
and black leads)
Sensing object
Output voltage (between
black and blue leads)
Detection indicator (red)
Operation
mode Model Timing chart Output circuit
NO
E2K-X4MF1
E2K-X8MF1
E2K-X15MF1
NC
E2K-X4MF2
E2K-X8MF2
E2K-X15MF2
Present
Not present
Operate
Reset
High
Low
ON
OFF
Load (between blue
and black leads)
Output voltage (between
black and brown leads)
Detection
indicator (red)
Sensing
object
Proximity
Sensor
main
circuit
Load
Brown
+V
0 V
Black*1
2.2 Ω
47 kΩ
3.9 kΩ
*2
Blue
*1. Load current: 200 mA max.
*2. When a transistor is connected.
Present
Not present
Operate
Reset
High
Low
ON
OFF
Load (between blue
and black leads)
Output voltage (between
black and brown leads)
Detection
indicator (red)
Sensing
object
Operation
mode Model Timing chart Output circuit
NO
E2K-X4MY1
E2K-X8MY1
E2K-X15MY1
NC
E2K-X4MY2
E2K-X8MY2
E2K-X15MY2
Present
Not present
Operate
Reset
ON
OFF
Load
Sensing object
Operation indicator (red)
Proximity
Sensor
main
circuit
Load
Brown
Blue
Present
Not present
Operate
Reset
ON
OFF
Load
Sensing object
Operation indicator (red)
E2K-X
5
Safety Precautions
Refer to Warranty and Limitations of Liability.
This product is not designed or rated for ensuring
safety of persons either directly or indirectly.
Do not use it for such purposes.
Do not use this product under ambient conditions that exceed the
ratings.
● Design
Ambient Environment
The Sensor may malfunction if subjected to water, oil, chemicals, or
condensation by falsely detecting these as sensing objects.
The E2K-X15M is highly sensitive to inductive objects and can thus
be affected even by small quantities of water drops.
Influence of Surroundi ng Objects
If the Sensor is embedded in metal, maintain at least the following
distances between the Sensor and the metal. The Sensor is also
affected by other materials, such as resins. Separate the Sensor from
other materials by the same distance as for metal.
* Be sure to ground the metal object, ot herwise Sensor operation will not be
stable.
Influence of Surroundi ng Metal (Unit: mm)
If a mounting bracket is used, be sure that at least the following
distances are maintained.
Mutual Interference
When installing Sensors face-to-face or side-by-side, ensure that the
minimum distances given in the following table are maintained.
Mutual Interference (Unit: mm)
Sensing Objects
The maximum sensing distance will decrease if the sensing object is
a non-grounded metal object or dielectric object.
•Sensing Object Material
The E2K-X can detect almost any type of object. The sensing
distance of the E2K-X, however, will vary with the electrical
characteristics of the object, such as the conductance and
inductance of the object, and the water content and capacity of the
object. The maximum sensing distance of the E2K-X will be
obtained if the object is made of grounded metal.
•There are objects that cannot be detected indirectly. Therefore, be
sure to test the E2K-X in a trial operation with the objects before
using the E2K-X in actual applications.
Effects of a High-frequency Electromagnetic Field
The E2K-X may malfunction if there is an ultrasonic washer, high-
frequency generator, transceiver, or inverter nearby.
For major measures, refer to Noise of Warranty and Limitations of
Liability for Photoelectric Sensors.
Mounting
Do not tighten the nut with excessive force. Always use washers when
tightening the nuts and do not exceed the torque in the following table.
● Miscellaneous
Organic Solvents
The Sensor has a case made of heat-resistant ABS resin. Be sure
that the case is free from organic solvents or solutions containing
organic solvents.
WARNING
Precautions for Correct Use
Model Dimension l d m n
E2K-X4M 20 50 860
E2K-X8M 12
E2K-X15M 10 25
Model Dimension A B
E2K-X4M 80 70
E2K-X8M 150 110
E2K-X15M 300 200
n
m
d dia.
l
*
Be sure to ground. Metal object
G
H
Influence of Surroundin g Metal
(Unit: mm)
Model Dimension G H
E2K-X4M 20 30
E2K-X8M
E2K-X15M 10
AB
Model Torque
E2K-X4M 0.78 N·m
E2K-X8M 2 N·m
E2K-X15M
6
E2K-X
Dimensions (Unit: mm)
Tolerance class IT16 applies to dimensions in this data sheet unless otherwise specified.
44
20 60 80
17
10.7 dia.
21 dia.
*1
M12 × 1
Indicator *2
Two clamping nuts
Two washers
*1. E and F Models: 4-dia. vinyl-insulated round cable with 3
conductors (Conductor cross section: 0.2 mm2, Insulator
diameter: 1.2 mm), Standard length: 2 m
Y Models: 4-dia. vinyl-insulated round cable with 2 conductors
(Conductor cross section: 0.3 mm2, Insulator diameter: 1.3 mm),
Standard length: 2 m
*2. E and F Models: Detection indicator (red)
Y Models: Operation indicator (red)
E2K-X4ME
@
E2K-X4MF@
E2K-X4MY@
E2K-X8ME
@
E2K-X8MF@
E2K-X8MY@
44
20 60 80
24
16.6 dia.
29 dia.
M18 × 1
*1
Indicator *2
Two clamping nuts
Two washers
*1. E and F Models: 6-dia. vinyl-insulated round cable with 3
conductors (Conductor cross section: 0.5 mm2, Insulator
diameter: 1.9 mm), Standard length: 2 m
Y Models: 6-dia. vinyl-insulated round cable with 2 conductors
(Conductor cross section: 0.5 mm2, Insulator diameter: 1.9 mm),
Standard length: 2 m
*2. E and F Models: Detection indicator (red)
Y Models: Operation indicator (red)
5510
60 80
36
28.1 dia.
42 dia.
*1
M30 × 1.5
Indicator *2
Two clamping nuts
Two washers
*1. E and F Models: 6-dia. vinyl-insulated round cable with 3
conductors (Conductor cross section: 0.5 mm2, Insulator
diameter: 1.9 mm), Standard length: 2 m
Y Models: 6-dia. vinyl-insulated round cable with 2 conductors
(Conductor cross section: 0.5 mm2, Insulator diameter: 1.9 mm),
Standard length: 2 m
*2. E and F Models: Detection indicator (red)
Y Models: Operation indicator (red)
E2K-X15ME@
E2K-X15MF@
E2K-X15MY@
Mounting Hole Dimensions
Model F (mm)
E2K-X4M@@ 12.5 dia.
E2K-X8M@@ 18.5 dia.
E2K-X15M@@ 30.5 dia.
+0.5
0
+0.5
0
+0.5
0
F
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
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LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2014.1
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2014 All Right Reserved.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Omron:
E2K-X15MY1 E2K-X4ME2 E2K-X4ME1 E2K-X15ME1 E2K-X15ME2 E2K-X15MF2 E2K-X15MF2 5M E2K-
X15MY2 E2K-X4ME1 5M E2K-X4ME2 5M E2K-X4MF2 E2K-X4MY1 E2K-X4MY1 5M E2K-X4MY2 E2K-X8ME1
10M E2K-X8ME2 E2K-X8MF2 E2K-X8MY1 5M E2K-X8MY2