User manual OMRON E2K-C DATASHEET

[. . . ] 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 DC 3-wire NPN DC 3-wire PNP Operating status NO E2K-C25ME1 E2-KC25MF1 NC E2K-C25ME2 E2K-C25MF2 Unshielded E2K-C 34 dia. 3 to 25mm Accessories (Order Separately) Mounting Brackets Shape Model Y92E-A34 Quantity 1 Remarks Supplied with the product. E2K-C D-183 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 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. [. . . ] Current flows in this direction if the circuit incorporates the transistor. E2K-C D-185 E2K-C Output voltage (between black and blue) H 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. 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. Stable detection if the difference is 1. 5 turns or more. The point the E2K-C turns off. 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 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. 20 mm min. Surrounding conductive object Surrounding conductive object 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. 80 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 surface Be sure to ground Metal 80 mm min. 80 mm min. 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 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. [. . . ] To convert millimeters into inches, multiply by 0. 03937. To convert grams into ounces, multiply by 0. 03527. D016-E2-04-X In the interest of product improvement, specifications are subject to change without notice. D-188 Capacitive Sensors [. . . ]