e-74 proximity sensors long-distance capacit ive proximity sensor E2K-C capacitive proximity sensor with adjustable sensitivity detects both metallic and non-metallic objects (glass, lumber, water, oi l, 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 ac 2-wire models E2K-C25my1 E2K-C25my2 shape model quantity remarks y92e-a34 1 supplied with the product. 34 dia. unshielded 3 to 25mm
e-75 E2K-C E2K-C rating/performance * the set distances are sensing distances applicable to standard se nsing objects. refer to engineering data for sensing distance s applicable to other types of objects. item model E2K-C25m # 1 E2K-C25m # 2 E2K-C25my1 E2K-C25my2 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 10 hz power supply(operating voltage range) 12 to 24 vdc, ripple (p-p): 10% max.,(10 to 40 vdc) 100 to 220 vac (90 to 250 vac) 50/60 hz 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. 5 to 200 ma (resistive load) residual voltage 2 v max. (under load current of 200 ma with cable length of 2 m) indicator lamp detection indicator (red led) operation indicator (red led) operating status (with sensing object approaching) e1, y1 models: no e2, y2 models: nc protective circuits reverse connection protection, surge absorber surge absorber ambient temperature operating/ storage: -25 c to 70? (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? voltage influence ?% max. of sensing distance at a voltage between 85% and 115% of the rated power supply voltage ?% 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 m w 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 1,500 vac 50/60 hz for 1min 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/s 2 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 material case heat-resistant abs resin sensing surface accessories mounting bracket, instruction manual
e-76 proximity sensors 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 25 20 15 10 5 0 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 no operates releases h l on 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 4.4k w +v 0v tr * 1. 200 ma max. (load current) * 2. when a transistor is connected yes no operates releases h l on off load (between brown and black) output voltage (between black and blue) operation indicator (red) sensing object yes no operates releases h l on off load (between brown and black) output voltage (between black and blue) operation indicator (red) sensing object brown +v tr black *2 *1 2.2 w 4.7k w blue 0v output main circuit 100 w load * 1. maximum load current: 200 ma * 2. current flows in this direction if the circuit incorporates the transistor. yes no operates releases h l on off load (between brown and black) output voltage (between black and blue) operation indicator (red) sensing object
e-77 E2K-C E2K-C ac 2-wire models operating status model timing chart output circuit no E2K-C25my1 nc E2K-C25my2 yes no operates releases on off load operation indicator (red) sensing object brown blue load main circuit yes no operates releases on off load operation indicator (red) sensing object
e-78 proximity sensors operation sensitivity adjustment remove the rear rubber cap of the E2K-C and turn the poten- tiometer in the hole to adjus t 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. 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. 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 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 surrounding conductive object 100 mm min. 100 mm min. face-to-dace mounting parallel mounting
e-79 E2K-C 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 induct ance 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 ca se 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. dimensions (unit: mm) sensors accessories (order separately)* E2K-C25m ## * e models: detection indica- tor (red); y models: opera- tion indicator (red) 82 34 dia. 20 7 cap cord 13 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?; 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?; insulation diameter: 1.9 mm) standard length: 2 m cad file e2k_01 l-shaped mounting bracket y92e-a34 * attached to the product. 45 43 6.3 5.2 r2.6 two elliptic holes for bracket mounting 35 2 23.5 15 two, m4 sensor clamping screws 42 30 35 6 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 45 57.6 51 14 30
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