F502-EN2-04.book Seite 183 Dienstag, 26. Juli 2005 5:48 17 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 Operating status NO NC E2K-C25ME1 E2-KC25MF1 E2K-C25ME2 E2K-C25MF2 3 to 25mm 34 dia. DC 3-wire NPN DC 3-wire PNP Accessories (Order Separately) Mounting Brackets Shape E2K-C Model Quantity Y92E-A34 1 Remarks Supplied with the product. D-183 E2K-C Unshielded F502-EN2-04.book Seite 184 Dienstag, 26. Juli 2005 5:48 17 Rating/Performance Item Model Sensing distance * Sensing distance adjustable range Sensing object Standard sensing object Differential distance Response frequency Power supply(Operating voltage range) Current consumption Leakage current Switching capacity Residual voltage Indicator lamp Operating status (with sensing object approaching) Protective circuits Ambient temperature Ambient humidity Temperature influence Voltage influence Insulation resistance Control output Dielectric strength Vibration resistance Shock resistance Protective structure Connection method Weight (Packed state) Case Material Sensing surface Accessories E2K-C25M#1 25 mm E2K-C25M#2 3 to 25 mm Conductors and dielectrics with grounded metal: 50 x 50 x 1t mm 15% max. of sensing distance (when adjusted to 25 mm ±10% with standard object) 70 Hz 12 to 24 VDC, ripple (p-p): 10% max.,(10 to 40 VDC) E models: 10 mA max. at 12 VDC, 16 mA max. at 24 VDC 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. 200 mA max. 2 V max. (under load current of 200 mA with cable length of 2 m) Detection indicator (red LED) E1, Y1 models: NO E2, Y2 models: NC Reverse connection protection, surge absorber Operating/Storage: -25°C to 70°C (with no icing or condensation) Operating/Storage: 35% to 95%RH (with no condensation) ±15%max. of sensing distance at 23° within temperature range -10°C to 55°C ±2% max. of sensing distance at a voltage between 85% and 115% of the rated power supply voltage 50 M min. (at 500 VDC) between current carry parts and case 1000 VAC 50/60 Hz for 1 min between energized part and case 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, and Z directions Destruction: 500 m/s2 for 10 times each in X, Y, and Z directions IEC 60529 IP66 Pre-wired models (standard length: 2 m) Approx. 200 g 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. D-184 Capacitive Sensors F502-EN2-04.book Seite 185 Dienstag, 26. Juli 2005 5:48 17 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 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 Main circuit Sensing object NC E2K-C25ME2 Operation indicator (red) Sensing object NO E2K-C25MF1 Output *2 Tr No 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) E2K-C Brack *1 Yes Operates Load (between brown and black) Releases Output voltage (between black and blue) +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 D-185 E2K-C Operating status F502-EN2-04.book Seite 186 Dienstag, 26. Juli 2005 5:48 17 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. Remove this rubber cap and adjust the potentiometer. 2. Turn the potentiometer counterclockwise until the E2K-C turns off with the sensing object located within the sensing distance. 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. Potentiometer Stop turning the potentiometer at the moment the E2K-C turns off. 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. 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. D-186 Capacitive Sensors F502-EN2-04.book Seite 187 Dienstag, 26. Juli 2005 5:48 17 Precautions Correct Use 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 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. 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 E2K-C 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 F502-EN2-04.book Seite 188 Dienstag, 26. Juli 2005 5:48 17 Dimensions (Unit: mm) Sensors E2K-C25M## 82 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 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. 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 D-188 In the interest of product improvement, specifications are subject to change without notice. Capacitive Sensors