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 Model Shape Sensing distance Output specifications Unshielded 3 to 25mm 34 dia. DC 3-wire NPN DC 3-wire PNP AC 2-wire Models Operating status NO NC E2K-C25ME1 E2K-C25ME2 E2-KC25MF1 E2K-C25MF2 E2K-C25MY1 E2K-C25MY2 Accessories (Order Separately) Mounting Brackets Shape E-74 Model Quantity Y92E-A34 1 Remarks Supplied with the product. Proximity Sensors Rating/Performance Item Model E2K-C25M#1 Sensing distance * 25 mm Sensing distance adjustable range 3 to 25 mm Sensing object Conductors and dielectrics E2K-C25M#2 E2K-C25MY1 E2K-C25MY2 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 10 Hz Power supply(Operating 12 to 24 VDC, ripple (p-p): 10% max.,(10 to 40 VDC) 100 to 220 VAC (90 to 250 VAC) 50/60 Hz voltage range) 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. 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 5 to 200 mA (resistive load) Operation indicator (red LED) 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 ±2% max. sensing distance at a voltage ranging from 90% to 120% of a rated power voltage of 100 VAC and from 80% to 120% of a rated supply voltage of 200 VAC Insulation resistance 50 MW 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/s2 for 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 1,500 VAC 50/60 Hz for 1min between energized part and case E2K-C Control output Case Material Sensing surface Accessories Heat-resistant ABS resin Mounting bracket, 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. E2K-C E-75 Characteristic data (typical) Sensing distance X (mm) Sensing Distance Change by Sensing Object (Typical) 25 20 15 10 5 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) Flour Sugar Standard sensing object (50 x 50 x t1) 500 ml milk (pure water) 0 Output Circuit Diagram DC 3-wire Models Operating status Model Timing chart Sensing object NO E2K-C25ME1 Output circuit Yes No Operates Load (between brown and black) Releases Output voltage (between black and blue) Operation indicator (red) H Brown ON Load OFF 4.4kW Brack *1 Main circuit Sensing object NC E2K-C25ME2 Operation indicator (red) Sensing object NO E2K-C25MF1 Output *2 Tr Yes No Operates Load (between brown and black) Releases Output voltage (between black and blue) H Blue 0V * 1. 200 mA max. (load current) * 2. When a transistor is connected L ON OFF Yes No Operates Load (between brown and black) Releases Output voltage (between black and blue) Operation indicator (red) H Brown +V L ON Tr *2 Black OFF Main circuit Sensing object NC E2K-C25MF2 Yes No Operates Load (between brown and black) Releases Output voltage (between black and blue) Operation indicator (red) E-76 +V L H 2.2W Output *1 Load 4.7kW 100W Blue 0V * 1. Maximum load current: 200 mA * 2. Current flows in this direction if the circuit incorporates the transistor. L ON OFF Proximity Sensors AC 2-wire Models Operating status Model Timing chart Yes Sensing object NO E2K-C25MY1 Load Output circuit No Operates Releases Operation indicator (red) ON Brown Load OFF Main circuit Blue Sensing object NC E2K-C25MY2 Load No Operates Releases ON OFF E2K-C Operation indicator (red) Yes E2K-C E-77 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. 2. Turn the potentiometer counterclockwise until the E2K-C turns off with the sensing object located within the sensing distance. Remove this rubber cap and adjust the potentiometer. Potentiometer Stop turning the potentiometer at the moment the E2K-C turns off. 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. 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. 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. 4. Set the potentiometer midway between the two points. Potentiometer Stop turning the potentiometer at the moment the E2K-C turns off. The point the E2K-C turns on. Midway The point the E2K-C turns off. 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. 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. 80 mm min. 80 mm min. 80 mm min. Surrounding conductive object E-78 Metal Sensing surface Be sure to ground Surrounding conductive object 20 mm min. 80 mm min. Mutual Interference Space the two Sensors at a distance exceeding 100 mm to prevent mutual interference. Face-to-dace Mounting Parallel Mounting 100 mm min. 100 mm min. 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. Proximity Sensors ∑ Indirect Detection. In the case of the detection of objects in metal containers, each metal container must have a nonmetallic window. 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. 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. Dimensions (Unit: mm) Sensors E2K-C25M## CAD file 82 E2K_01 Screw hole for sensitivity adjustment 7 Cap cord 13 34 dia. 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 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 Operation indicator * * E models: Detection indicator (red); Y models: Operation indicator (red) Accessories (Order Separately)* L-shaped Mounting Bracket Y92E-A34 45 43 5.2 6.3 Two elliptic holes for bracket mounting R2.6 2 35 15 42 23.5 Two, M4 sensor clamping screws With Mounting Bracket Attached 54.4 E2K-C E2K Proximity Sensor Sensor mounting holes Two, 5.5-dia. mounting holes * 51 30 30 14 * The holes are not drilled straight through. Drill through the holes before using them. 45 6 35 57.6 * Attached to the product. E2K-C E-79