E2KC25ME1

**E2K-C** 

## Long-distance Capacitive Proximity Sensor 

## _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 

~~|~~ Model Shape Sensing distance Operating status Output specifications ~~EEE~~ NO NC Unshielded DC 3-wire NPN **E2K-C25ME1 E2K-C25ME2** 3 to 25mm 34 dia. DC 3-wire PNP **E2-KC25MF1 E2K-C25MF2** ~~eeee~~ Accessories (Order Separately) Mounting Brackets Shape Model Quantity Remarks ~~a ee es~~ **Y92E-A34** 1 Supplied with the product. ~~fe;~~ ~~**|**~~ 

**E2K-C** 

D-183 

## Rating/Performance 

|Item<br>Model|Item<br>Model|E2K-C25M#1|E2K-C25M#2|
|---|---|---|---|
|Sensingdistance *||25 mm||
|Sensing distance<br>adjustable range||3 to 25 mm||
|Sensingobject||Conductors and dielectrics||
|Standard sensingobject||withgrounded metal: 50 x 50 x 1t mm||
|Differential distance||15% max. of sensingdistance(when adjusted to 25 mm ±10% with standard object)||
|Response frequency||70 Hz||
|Power supply(Operating<br>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)<br>with output turned OFF.||
|Control<br>output|Switching<br>capacity|200 mA max.||
||Residual<br>voltage|2 V max. (under load current of 200 mA with cable length of 2 m)||
|Indicator lamp||Detection indicator (red LED)||
|Operating status<br>(with sensing object<br>approaching)||E1, Y1 models: NO<br>E2, Y2 models: NC||
|Protective circuits||Reverse connection protection, surge absorber||
|Ambient temperature||Operating/Storage: -25°C to 70°C (with no icingor condensation)||
|Ambient humidity||Operating/Storage: 35% to 95%RH (with no condensation)||
|Temperature influence||±15%max. of sensingdistance at 23° within temperature range  -10°C to 55°C||
|Voltage influence||±2% max. of sensingdistance at a voltage between 85% and 115% of the rated power supplyvoltage||
|Insulation resistance||50 M min. (at 500 VDC) between current carryparts and case||
|Dielectric strength||1000 VAC 50/60 Hz for 1 min<br>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. 200g||
|Material|Case|Heat-resistant ABS resin||
||Sensing<br>surface|||
|Accessories||Mountingbracket, instruction manual||



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

Capacitive Sensors 

D-184 

Characteristic data (typical) 

## Sensing Distance Change by Sensing Object (Typical) 

**==> picture [154 x 187] intentionally omitted <==**

**----- Start of picture text -----**<br>
25<br>20<br>15<br>10<br>5<br>0<br>Sensing distance X (mm)<br>Standard sensing object(50 x 50 x t1) 500 ml milk  (pure water) Flour Sugar Salt 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)<br>**----- End of picture text -----**<br>


## Output Circuit Diagram 

## DC 3-wire Models 

|Operating<br>status|Model|Timing chart|Timing chart|Timing chart|Timing chart|||||Output circuit||
|---|---|---|---|---|---|---|---|---|---|---|---|
|**NO**|**E2K-C25ME1**|Yes<br>No<br>Operates<br>Releases<br>H<br>L<br>ON<br>OFF<br>Load<br>(between brown and black)<br>Output voltage<br>(between black and blue)<br>Operation indicator (red)<br>Sensing object||||Main<br>circuit<br>Load<br>Brown<br>Brack *1<br>Output *2<br>Blue<br>4.4kW<br>+V<br>0V<br>Tr<br>* 1. 200 mA max. (load current)<br>* 2. When a transistor is connected||||||
|||||||||||||
|||||||||||||
||||s<br>|||||||||
|||||||||||||
|||||||||||4.4kW||
|||||||||||||
||||||||Ma<br>circ|in<br>uit||||
|**NC**|**E2K-C25ME2**|Yes<br>No<br>Operate<br>Release<br>H<br>L<br>ON<br>OFF<br>Load<br>(between brown and black)<br>Output voltage<br>(between black and blue)<br>Operation indicator (red)<br>Sensing object||||||||||
|||||||||||||
|||||||||||||
||||s<br>|||||||||
||||s<br><br>|||||||||
|||||||||||||
|||||||||||||
|||||||||||||
|||||||||||||
|||||||||||||
|**NO**|**E2K-C25MF1**|Yes<br>No<br>Operates<br>Releases<br>H<br>L<br>ON<br>OFF<br>Load<br>(between brown and black)<br>Output voltage<br>(between black and blue)<br>Operation indicator (red)<br>Sensing object||||Brown<br>+V<br>Tr<br>Black*2<br>*1<br>2.2W<br>4.7kW<br>Blue<br>0V<br>Output<br>Main<br>circuit<br>100W<br>Load<br>* 1. Maximum load current: 200 mA<br>* 2. Current flows in this direction<br>if the circuit incorporates the transistor.||||||
|||||||||||||
|||||||||||||
||||s<br>|||||||||
|||||||||||||
|||||||||||||
|||||||||||||
|||||||||||||
|**NC**|**E2K-C25MF2**|Yes<br>No<br>Operate<br>Release<br>H<br>L<br>ON<br>OFF<br>Load<br>(between brown and black)<br>Output voltage<br>(between black and blue)<br>Operation indicator (red)<br>Sensing object||||||||||
|||||||||||||
|||||||||||||
||||s<br>|||||||||
||||s<br><br>|||||||||
|||||||||||||
|||||||||||||
|||||||||||||
|||||||||||||
|||||||||||||



**E2K-C** 

D-185 

## Operation 

## Sensitivity adjustment 

Remove the rear rubber cap of the E2K-C and turn the potentiometer in the hole to adjust the sensitivity of the E2K-C. 

**==> picture [133 x 53] intentionally omitted <==**

**----- Start of picture text -----**<br>
Remove this rubber<br>cap and adjust the<br>potentiometer.<br>**----- End of picture text -----**<br>


The sensing distance increases by turning the potentiometer clockwise and decreases by turning the potentiometer counterclockwise. 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. 

**==> picture [77 x 26] intentionally omitted <==**

**----- Start of picture text -----**<br>
Potentiometer<br>Stop turning the potentiometer<br>at the moment the E2K-C turns off.<br>**----- End of picture text -----**<br>


2. Turn the potentiometer counterclockwise until the E2K-C turns off with the sensing object located within the sensing distance. 

**==> picture [71 x 32] intentionally omitted <==**

**----- Start of picture text -----**<br>
Potentiometer<br>Stop turning the potentiometer<br>at the moment the E2K-C turns off.<br>**----- End of picture text -----**<br>


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 operation. 

**==> picture [135 x 44] intentionally omitted <==**

**----- Start of picture text -----**<br>
The point the<br>E2K-C turns on.<br>Stable detection if the  The point the<br>difference is 1.5 turns or more. E2K-C turns off.<br>**----- End of picture text -----**<br>


4. Set the potentiometer midway between the two points. 

**==> picture [64 x 43] intentionally omitted <==**

**----- Start of picture text -----**<br>
The point the<br>E2K-C turns on.<br>Midway<br>The point the<br>E2K-C turns off.<br>**----- End of picture text -----**<br>


5. If the distance of each sensing object varies, take step 2 with the sensing object located at the farthest sensing distance to be applied. 

Capacitive Sensors 

D-186 

Precautions 

## Correct Use 

## 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. 

**==> picture [233 x 85] intentionally omitted <==**

**----- Start of picture text -----**<br>
20 mm min. 80 mm min.<br>80 mm<br>min.<br>Be sure to ground Metal 80 mm min. 80 mm min.<br>Sensing surface Surrounding conductive object Surrounding conductive object<br>**----- End of picture text -----**<br>


## Mutual Interference 

Space the two Sensors at a distance exceeding 100 mm to prevent mutual interference. 

**==> picture [225 x 68] intentionally omitted <==**

**----- Start of picture text -----**<br>
Face-to-dace Mounting Parallel Mounting<br>100 mm min.<br>100 mm min.<br>**----- End of picture text -----**<br>


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, 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 E2K-C will be available if the object is made of grounded metal. 

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

- in metal containers, each metal container must have a nonmetallic 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 containing organic solvents. 

**E2K-C** 

D-187 

Dimensions (Unit: mm) 

## Sensors 

## **E2K-C25M** ## 

**==> picture [104 x 66] intentionally omitted <==**

**==> picture [383 x 95] intentionally omitted <==**

**----- Start of picture text -----**<br>
82 7 Screw hole for sensitivity adjustment<br>Cap cord<br>13<br>34 dia.<br>20 Cord clamp 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 mY type: 6-dia. two conductors vinyl-insulated round cable (cross-sectional area  Operation indicator * * E models: Detection indica-<br>of conductors: 0.5 m‡u; insulation diameter: 1.9 mm) Standard length: 2 m tor (red); Y models: Opera-<br>tion indicator (red)<br>**----- End of picture text -----**<br>


## Accessories (Order Separately)* 

**==> picture [483 x 177] intentionally omitted <==**

**----- Start of picture text -----**<br>
L-shaped Mounting Bracket 45<br>Y92E-A34 43 6.3 Two elliptic holes<br>5.2 for bracket mounting<br>R2.6<br>2<br>35<br>23.5<br>15<br>42 Two, M4 sensor clamping screws<br>With Mounting Bracket Attached<br>54.4 E2K Proximity Sensor<br>Sensor mounting holes<br>51 Two, 5.5-dia. mounting holes *<br>30 30<br>14 * The holes are not drilled straight through.  6<br>Drill through the holes before using them.<br>45 35<br>57.6<br>**----- End of picture text -----**<br>


* Attached to the product. 

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 

Capacitive Sensors 

D-188