Omron E2K-C Manuel utilisateur

D-183E2K-C

E2K-C

Long-distance Capacitive Proximity Sensor

E2K-C

Capacitive Proximity Sensor

with Adjustable Sensitivity

• Detects both metallic and non-metallic objects (glass,

lumber, water, oil, plastic, etc.) without direct contact.

• DC models acquire CE marking

Ordering Information

Sensors

Accessories (Order Separately)

Mounting Brackets

Shape Sensing distance

Model

Output specifications Operating status

NO NC

DC 3-wire NPN

DC 3-wire PNP

E2K-C25ME1

E2-KC25MF1

E2K-C25ME2

E2K-C25MF2

Shape Model Quantity Remarks

Y92E-A34 1 Supplied with the product.

34 dia.

Unshielded

3 to 25mm

F502-EN2-04.book Seite 183 Dienstag, 26. Juli 2005 5:48 17

D-184 Capacitive Sensors

Rating/Performance

* The set distances are sensing distances applicable to standard sensing objects. Refer to Engineering Data for sensing distances applicable to other types of objects.

Item Model E2K-C25M#1E2K-C25M#2

Sensing distance * 25 mm

Sensing distance

adjustable range

3 to 25 mm

Sensing object Conductors and dielectrics

Standard sensing object with grounded metal: 50 x 50 x 1t mm

Differential distance 15% max. of sensing distance (when adjusted to 25 mm ±10% with standard object)

Response frequency 70 Hz

Power supply(Operating

voltage range) 12 to 24 VDC, ripple (p-p): 10% max.,(10 to 40 VDC)

Current consumption E models: 10 mA max. at 12 VDC, 16 mA max. at 24 VDC

Leakage current Y models: 1 mA max. at 100 VAC (50/60 Hz) with output turned OFF., 2 mA max. at 200 VAC (50/60 Hz)

with output turned OFF.

Control

output

Switching

capacity 200 mA max.

Residual

voltage 2 V max. (under load current of 200 mA with cable length of 2 m)

Indicator lamp Detection indicator (red LED)

Operating status

(with sensing object

approaching)

E1, Y1 models: NO

E2, Y2 models: NC

Protective circuits Reverse connection protection, surge absorber

Ambient temperature Operating/Storage: -25°C to 70°C (with no icing or condensation)

Ambient humidity Operating/Storage: 35% to 95%RH (with no condensation)

Temperature influence ±15%max. of sensing distance at 23° within temperature range -10°C to 55°C

Voltage influence ±2% max. of sensing distance at a voltage between 85% and 115% of the rated power supply voltage

Insulation resistance 50 M min. (at 500 VDC) between current carry parts and case

Dielectric strength 1000 VAC 50/60 Hz for 1 min

between energized part and case

Vibration resistance 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, and Z directions

Shock resistance Destruction: 500 m/s2for 10 times each in X, Y, and Z directions

Protective structure IEC 60529 IP66

Connection method Pre-wired models (standard length: 2 m)

Weight (Packed state) Approx. 200 g

Material

Case

Heat-resistant ABS resin

Sensing

surface

Accessories Mounting bracket, instruction manual

F502-EN2-04.book Seite 184 Dienstag, 26. Juli 2005 5:48 17

D-185E2K-C

E2K-C

Characteristic data (typical)

Sensing Distance Change by Sensing Object (Typical)

Output Circuit Diagram

DC 3-wire Models

Operating

status Model Timing chart Output circuit

NO E2K-C25ME1

NC E2K-C25ME2

NO E2K-C25MF1

NC E2K-C25MF2

Sensing distance X (mm)

Standard sensing object

(50 x 50 x t1)

Phenol resin

(50 x 50 x 15)

Neoprene rubber

(50 x 50 x 15)

Glass

(200 x 50 x t3)

Lavan plate

(160 x 120 x t15)

Resin pellet

(Duracon)

500 ml milk

(pure water)

Flour

Sugar

Salt

Yes

Operates

Releases

OFF

Load

(between brown and black)

Output voltage

(between black and blue)

Operation indicator (red)

Sensing object

Main

circuit

Load

Brown

Brack *1

Output *2

Blue

4.4kW

* 1. 200 mA max. (load current)

* 2. When a transistor is connected

Yes

Operates

Releases

OFF

Load

(between brown and black)

Output voltage

(between black and blue)

Operation indicator (red)

Sensing object

Yes

Operates

Releases

OFF

Load

(between brown and black)

Output voltage

(between black and blue)

Operation indicator (red)

Sensing object

Brown

Black

2.2W

4.7kW

Blue

Output

Main

circuit

100W

Load

* 1. Maximum load current: 200 mA

* 2. Current flows in this direction

if the circuit incorporates the transistor.

Yes

Operates

Releases

OFF

Load

(between brown and black)

Output voltage

(between black and blue)

Operation indicator (red)

Sensing object

F502-EN2-04.book Seite 185 Dienstag, 26. Juli 2005 5:48 17

D-186 Capacitive Sensors

Operation

Sensitivity adjustment

Remove the rear rubber cap of the E2K-C and turn the poten-

tiometer in the hole to adjust the sensitivity of the E2K-C.

The sensing distance increases by turning the potentiometer

clockwise and decreases by turning the potentiometer coun-

terclockwise. The potentiometer can make 15±3 valid turns

and then make slip turns because the potentiometer does not

have a stopper. The slip turns will not, however, damage the

potentiometer.

1. Slowly turn the potentiometer clockwise until the E2K-C

turns on with no sensing object.

2. Turn the potentiometer counterclockwise until the E2K-C

turns off with the sensing object located within the sensing

distance.

3. The E2K-C will be in stable operation if there is a difference

of 1.5 turns or more between the points the E2K-C is turned

on and off, otherwise the E2K-C will not be in stable oper-

ation.

4. Set the potentiometer midway between the two points.

5. If the distance of each sensing object varies, take step 2

with the sensing object located at the farthest sensing dis-

tance to be applied.

Remove this rubber

cap and adjust the

potentiometer.

Potentiometer

Stop turning the potentiometer

at the moment the E2K-C turns off.

Potentiometer

Stop turning the potentiometer

at the moment the E2K-C turns off.

The point the

E2K-C turns on.

The point the

E2K-C turns off.

Stable detection if the

difference is 1.5 turns or more.

The point the

E2K-C turns on.

The point the

E2K-C turns off.

Midway

F502-EN2-04.book Seite 186 Dienstag, 26. Juli 2005 5:48 17

D-187E2K-C

E2K-C

Precautions

Design

Effects of Surrounding Metal

During Proximity Sensor installation provide a distance of 80

mm min. from the surrounding metal objects to prevent the

Sensor from being affected by metal objects other than the

sensing object.

If installing the Sensor with the L-shaped mounting bracket,

provide a distance of 20 mm min. between the face of the

sensing head and the mounting bracket.

Mutual Interference

Space the two Sensors at a distance exceeding 100 mm to

prevent mutual interference.

Effect of High-frequency Electro-magnetic Field

The E2K-C may malfunction if there is an ultrasonic washer,

high-frequency generator, transceiver, or inverter nearby.

Sensing Object

• Sensing Object Material. The E2K-C can detect almost

any type of object. The sensing distance of the E2K-C, how-

ever, will vary with the electrical characteristics of the ob-

ject, such as the conductance and inductance of the object,

and the water content and capacity of the object. The max-

imum sensing distance of E2K-C will be available if the ob-

ject is made of grounded metal.

• Indirect Detection. In the case of the detection of objects

in metal containers, each metal container must have a non-

metallic window.

Miscellaneous

Organic Solvents

E2K-C has a case made of heat-resistant ABS resin. Be sure

that the case is free from organic solvents or solutions con-

taining organic solvents.

Correct Use

20 mm min. 80 mm min.

80 mm min. 80 mm min.

80 mm

min.

Sensing surface

Metal

Be sure to ground

Surrounding conductive object

100 mm min.

Face-to-dace Mounting Parallel Mounting

F502-EN2-04.book Seite 187 Dienstag, 26. Juli 2005 5:48 17

D-188 Capacitive Sensors

Dimensions (Unit: mm)

Sensors

Accessories (Order Separately)*

E2K-C25M##

* E models: Detection indica-

tor (red); Y models: Opera-

tion indicator (red)

L-shaped Mounting Bracket

Y92E-A34

* Attached to the product.

34 dia.

Cap cord

Cord clamp

Screw hole for sensitivity adjustment

Operation indicator *

E type: 6-dia. three conductors vinyl-insulated round cable (cross-sectional

area of conductors: 0.5 m‡u; insulation diameter: 1.9 mm) Standard length: 2 m

Y type: 6-dia. two conductors vinyl-insulated round cable (cross-sectional area

of conductors: 0.5 m‡u; insulation diameter: 1.9 mm) Standard length: 2 m

43 6.3

5.2 R2.6

Two elliptic holes

for bracket mounting

23.5

Two, M4 sensor clamping screws

E2K Proximity Sensor

With Mounting Bracket Attached

* The holes are not drilled straight through.

Drill through the holes before using them.

Sensor mounting holes

Two, 5.5-dia. mounting holes *

54.4

57.6

In the interest of product improvement, specifications are subject to change without notice.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Cat. No. D016-E2-04-X

F502-EN2-04.book Seite 188 Dienstag, 26. Juli 2005 5:48 17

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