e2k-c 2 e2k-c cylindrical sensor offers adjustable detecting distance adjustable capacitive prox e2k-c permits non-contact detection of metallic and non-metallic objects such as glass, wood, water, oil and plastic allows indirect detection of materials inside non-metallic containers adjustable detecting distance from 3 to 25 mm built-in amplifier accepts wide range of supply voltages and switches up to 200 ma mounting bracket included ordering information sensors type unshielded nominal detecting distance 3 to 25 mm (0.12 to 0.98 in), adjustable output type no nc ac switching type (scr) E2K-C25MY1 e2k-c25my2 npn e2k-c25me1 e2k-c25me2 pnp e2k-c25mf1 e2k-c25mf2 part number dc switching type replacement parts description part number mounting bracket for e2k-c (supplied with sensor) y92e-a34
e2k-c 3 e2k-c part number e2k-c25m ?? e2k-c25my ? sensor type capacitive body size 34 mm (1.34 in) diameter type unshielded supply voltage 10 to 40 vdc, 10% max. permissible 90 to 250 vac, 50/60 hz ripple peak to peak current consumption 10 ma max. at 12 vdc 1 ma max. at 100 vac 15 ma max. at 24 vdc 2 ma max. at 200 vac detectable object type metallic and non-metallic objects sensitivity adjustable 3 to 25 mm (0.12 to 0.98 in) standard target size 50 x 50 x 1 mm (grounded mild steel, l x w x h) (2.0 x 2.0 x 0.04 in) differential travel 15% max. of detecting distance control type scr-no (E2K-C25MY1) output scr-nc (e2k-c25my2) max. load 200 ma min. load 5 ma max. off-state see ?eakage current characteristics leakage current graph in engineering data max. on-state 2v max. voltage drop type npn-no open collector with pull-up npn-nc open collector with pull-up pnp-no open collector with pull-down pnp-nc open collector with pull-down max. load 200 ma max. on-state see ?esidual load voltage?graph in voltage drop engineering data response frequency 70 hz 10hz not provided provided not provided weld field immunity not provided rfi immunity not provided indicators target present (red led) output operation (red led) materials housing abs/pc sensing face abs cable sheath pvc mounting bracket y92e-a34 included connections prewired three-conductor cable, 2 m (6.56 ft) length two-conductor cable, 2 m (6.56 ft) length weight with cable approx. 200 g (7.0 oz.) ul 1 nema 1, 4, 12, 13 iec 144 ip67 approvals ul listed, file number e76675 csa certified, file number lr45951 ambient operating temperature ?5 to 70 c (?3 to 158 f) vibration 10 to 55 hz, 1.5 mm (0.06 in) double amplitude shock approx. 50 g's specifications effective maximum detecting distance (with standard target) ac solid- state dc power supply reverse polarity output short- circuit circuit protection dc solid- state enclosure ratings
e2k-c 4 e2k-c output circuit diagrams and timing charts operation ac switching types e2k-c25my ? prox. switch main circuit white (black) load black (blue) present absent operates releases operates releases on off on off target load operation indicator no nc no nc note: iec colors are shown in parentheses. dc switching types e2k-c25me ? the dotted line shows a transistor circuit load. load prox. switch main circuit d 1 + v 0 v d 2 zd tr note: iec colors are shown in parentheses. e2k-c25mf ? the dotted line shows a transistor circuit load. prox. switch main circuit 4.7 k ? d 2 tr zd 22 ? brown (red) load 0 v + v brown (red) 4.7 k ? black (white) blue (black) 2.2 ? 22 ? 2.2 ? d 1 black (white) blue (black) e2k-c25me1 no present absent operates releases h l on off target load (between red and white) logic (between white and black) operation indicator e2k-c25mf1 no present absent operates releases h l on off target load (between white and black) logic (between red and white) operation indicator e2k-c25mf2 nc e2k-c25me2 nc
e2k-c 5 e2k-c engineering data operating range E2K-C25MY1 detecting head setting distance detecting distance x (mm) 30 25 20 15 10 5 25mm 20mm 15mm 10mm 5mm y (mm) 25 20 15 10 5 0 5 10 15 20 25 y standard target x detecting head detecting distance vs. size and material of target detecting distances of common materials 10 20 30 40 50 60 70 80 90 100 25 20 15 10 5 0 grounded mild steel (50 x 50 x 1 mm) milk (500 ml) flour sugar salt phenolic resin (50 x 50 x 50 mm) neoprene rubber (50 x 50 x 5 mm) glass (200 x 50 x 3 mm) plastic resin pellets detecting distance x (mm) detecting distance x (mm) soft wood (160 x 120 x 15 mm) x size of target (mm) phenolic resin plate t = 6 mm grounded mild steel t = 1 mm detecting distance ? ungrounded mild steel t = 1 mm 30 25 20 15 10 5 0
e2k-c 6 e2k-c sensors unit: mm (inch) e2k-c25m ?? dimensions note: cable may be extended to 200 m (656 ft). operation indicator (led) cap screw for sensitivity adjustment cable: 2 m (6.56 ft.) length 6 (0.24) 0.15 (0.006) 82 (3.23) 31 (1.22) 34 (1.34) dia. 20 (0.79) residual load voltage characteristics note: when the current rating of the load is less than 10 ma, false operation may occur. this is normal, and the problem can be cured by installing a bleeder resistor in parallel with the load. use the formulas given here to calculate the power rating and value of the resistor. ac switching types e2k-c25my ? 100 vac 200 vac load load voltage (v) 1 5 10 50 100 200 load voltage (v) residual load voltage load 1 5 10 50 100 200 ac 100v on off 200 150 100 50 0 100 90 80 70 60 50 40 30 20 10 0 load current (ma) load current (ma) residual load voltage residual output voltage off ac 200v residual output voltage on 1 0.5 0.1 0.05 0.01 dc switching types e2k-c25m ?? 24vdc load voltage (v) 0 50 100 150 200 250 p : power rating of bleeder resistor i : load current (ma) v s : supply voltage (v) r(k ? ) p (mw) < = > v s 2 r v s 10 ?i load current (ma) off (v 1 ) on (v 2 ) 24 vdc leakage current characteristics ac switching types e2k-c25my ? leakage current (ma) 3.0 2.5 2.0 1.5 1.0 0.5 0 off state 0 80 100 120 140 160 180 200 220 240 260 supply voltage (v)
e2k-c 7 e2k-c precautions when mounting the sensor, be sure to provide the minimum distance shown in the diagram. this prevents the sensor from being affected by metallic objects other than the target. also, when using the supplied mounting bracket, be sure to allow a distance of 20 mm or more between the detecting face and the mounting bracket. 43 (1.69) mounting bracket sensor mounting hole two 5.5 (0.22) dia. mounting holes effects of surrounding metals mutual interference to prevent mutual interference, be sure to space the two sensors at a distance greater than that shown in the dia- grams. two m4 sensor clamping screws 6.3 (0.25) 6 (0.24) e2k-c proximity sensor 45 (1.77) two elliptic holes for bracket mounting 23.5 (0.93) 15 (0.59) 42 (1.65) 5.2 (0.20) 55 (2.16) 51 (2.01) 14 (0.55) 45 (1.77) 58 (2.28) 30 (1.18) 35 (1.38) y92e-a34 (supplied with sensor) r2.6 (0.102) 35 (1.38) 2 (0.08) unit: mm (inch) detecting face to ground metal surrounding conductive object 80 (3.15) mm min. 20 (0.79) mm min. surrounding conductive object 80 (3.15) mm min. 80 (3.15) mm min. 80 (3.15) mm min. opposed mounting 100 (3.94) mm min. parallel mounting 100 (3.94) mm min.
e2k-c 8 e2k-c sensitivity adjustment no type (e2k-c25m ? 1) remove protective rubber plug to gain access to sensitivity adjustment screw. use the screwdriver provided with each sensor to turn the sensitivity adjustment screw. 1) remove any targets from in front of the sensor. turn the sensitivity adjustment screw clockwise until the sensor turns on and the indicator illuminates. 2) place a target in front of the sensor. turn the sensitivity adjustment screw counterclockwise until the sensor turns off and the indicator goes out. note the number of revolutions between off and on positions. 3) if the number of revolutions is greater than one and a half, the sensor will provide stable output. if the number of revolutions is less than one and a half, increase or decrease the distance between the target and the sensing face as necessary to allow at least one and a half revolu- tions between the on and off positions. 4) now turn the sensitivity adjustment screw clockwise to the midpoint between the on and off points. 5) if the distance between the target and the sensor is not constant, perform the first adjustment operation (#1) when the target is at the closest position to the sensor. then perform the second adjustment operation (#2) when the target is at the farthest position from the sensor. sensitivity adjustment stop when the sensor turns on sensitivity adjustment stop when the sensor turns off stable operation if the difference is more than 1.5 turns 1 2 on point nc type (e2k-c25m ? 2) the sensitivity adjustment procedure for nc type proximity sensors is the same as for no type sensors, with the exception that on and off operations of the proximity sensor and on and off points in the adjustment procedure are exactly reversed. using metal conduit if a high voltage of power line runs near the proximity sensor cable, be sure to wire the sensor cable through a metal conduit to protect the sensor from malfunctioning or damage. surge protection the proximity sensor is provided with a surge suppressor circuit. however, if any large surge generating source (i.e., motor, welding machine, etc.) exists in the vicinity of the proximity sensor, insert a surge suppressor (such as a varistor) into the surge generating source. 1 1 2 set at midpoint between on and off points on point off point
e2k-c e2k-c omron electronics llc omron canada, inc. one east commerce drive 885 milner avenue schaumburg, il 60173 scarborough, ontario m1b 5v8 1-800-55-omron 416-286-6465 cat. no. cedsax4 11/01 specifications subject to change without notice. printed in the u.s.a. omron on-line global - http://www.omron.com usa - http://www.omron.com/oei canada - http://www.omron.com/oci
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