1 photoelectric sensor e3s-ls focusable sensors with built-in dc amplifiers pinpoint focusable and area focusable models eliminate background objects. ideal for precise detection of level/height, edges, small holes and openings, objects touching one another, objects inside transparent covers. ordering information sensing method sensing distance model npn output pnp output area focusable reflective 5 to 25 cm (continuously variable) e3s-ls20xe4 e3s-ls20xb4 pinpoint focusable reflective 3 to 10 cm (continuously variable) e3s-ls10xe4 e3s-ls10xb4 3 0.5 cm e3s-ls3c1d e3s-ls3rc4 --- application examples sensing of objects utilizing their difference in luster. sensing of objects traveling in contiguous succession. sensing of small holes, narrow openings, or unevenness. sensing of objects utilizing their difference in luster. sensing of objects traveling in contiguous succession. sensing of small holes, narrow openings, or evenness. pencils e3s-ls10x e3s-ls20x sensing distance supply voltage output 80 ma 100 ma 12 to 24 vdc 3 to 10 cm, 5 to 25 cm
e3s-ls e3s-ls 2 specifications ratings/characteristics item e3s-ls10x 4 e3s-ls20x 4 e3s-ls3c1d e3s-ls3rc4 power supply voltage 12 vdc ?10% to 24 vdc +10%, ripple (p-p): 10% max. 5 vdc ?10% to 24 vdc +10%, ripple (p-p): 10% max. 12 vdc ?10% to 24 vdc +10%, ripple (p-p): 10% max. current consumption 40 ma max. sensing distance 3 to 10 cm (variable with distance adjuster) 5 to 25 cm (variable with distance adjuster) 3 0.5 cm differential travel 0.5 mm max. at 3 cm 3 mm max. at 10 cm 5% max. --- standard objects 1 x 1 cm white mat paper 5 x 7.5 cm white mat paper 1 x 1 cm white mat paper control output dc solid-state load model with suffix -e4: 80 ma max. model with suffix -b4: 100 ma max. 30 ma max. 50 ma max. ou pu so dsae voltage output 1.1 v max. at 80 ma 2 v max. response time (on, off) 1 ms max. on: 3 ms off: 100 ms 1 ms max. sensitivity adjustable --- adjustable operation mode wire-selectable (refer to ?output circuit.?) --- wire-selectable (refer to ?output circuit.? ) indicators light indicator (red), stability indicator (green) operation indicator (red) light indicator (red) circuit protection short circuit mutual interference protection provided --- provided enclosure rating iec 144 ip67 ip40 nema 1, 3, 4x, 6, 12 --- housing material metal plastic light source red led infrared led red led ambient temperature operating: ?25 to 55 c operating: ?10 to 55 c
e3s-ls e3s-ls 3 engineering data excess gain ratio e3s-ls20xe4 e3s-ls10xe4 e3s-ls3rc4 excess gain ratio sensing distance (cm) excess gain ratio sensing distance (cm) excess gain ratio sensing distance (cm) peak receiver output at 3 cm peak receiver output at 5 cm peak receiver output at 10 cm note: 1. sensitivity adjustor: set to max. 2. this graph shows the relationship between the optical output and setting distance by adjusting the sensitivity adjustor so that the optical output will be maximum at a sensing distance of 3, 5, or 10 cm. operating level standard sensing object (white paper) standard sensing object (black carbon paper) operating voltage setting distance operating range e3s-ls20xe4 e3s-ls10xe4 e3s-ls3rc4 operating position y (mm) sensitivity e3s-ls20xe4 distance (cm) size of object (cm) operating position y (mm) operating position y (mm) distance: max. distance x (cm) distance: min. standard object (5 x 57.5 cm) (with minimum sensing distance) optical axis operating distance x standard object (1 1 cm) distance: 3 cm distance: 10 cm sensing object size: 10 x 10 mm setting distance (mm) short side long side white mat paper object sensed ratio of short side to long side = 2:3
e3s-ls e3s-ls 4 operation output circuits e3s-ls10x -e4 type (npn output) -b4 type (pnp output) main circuit +v output brown black blue light- on dark- on blue black brown 0 v +v brown black blue blue black brown 0 v output 2.2 ? light- on dark- on main circuit e3s-ls20x -e4 type (npn output) -b4 type (pnp output) +v output brown black blue light- on dark- on blue black brown 0 v +v brown black blue light- on dark- on blue black brown 0 v output 2.2 ? main circuit main circuit e3s-ls3c1d e3s-ls3rc4 light-on dark-on z brown black operation indicator (red) photoelectric sensor main circuit z: zener diode (v 2 = 30 v) blue brown black out blue pink photoelectric sensor main circuit incident indicator (red) brown black out photoelectric sensor main circuit incident indicator (red) blue pink +v out 0 v +v 0 v +v 0 v
e3s-ls e3s-ls 5 timing chart e3s-ls10x -e4 type (npn output) -b4 type (pnp output) light light indicator output transistor load (relay, etc.) output voltage (logic, etc.) incident interrupted on off operates releases h l on off light-on dark-on light light indicator output transistor load (relay, etc.) incident interrupted on off operates releases on off light-on dark-on e3s-ls20x -e4 type (npn output) -b4 type (pnp output) light light indicator output transistor load (relay, etc.) output voltage (logic, etc.) incident interrupted on off operates releases h l on off light-on dark-on light light indicator output transistor load (relay, etc.) incident interrupted on off operates releases on off light-on dark-on e3s-ls3c1d e3s-ls3rc4 sensing object yes no indicator on off on off timer setting output transistor (load) 3 ms max. < t (see note) t (see note) note: timer setting t = 0.1 to 1 s (between brown and black lines) light light indicator output transistor load (relay, etc.) incident interrupted on off operates releases on off light-on dark-on
e3s-ls e3s-ls 6 dimensions note: all units are in millimeters unless otherwise indicated. e3s-ls10x 4 e3s-ls20x 4 cord: 4-mm dia., 18/0.12, 3-conductor standard length: 2 m weight: approx. 225 g note: a mounting bracket can be attached to side a. sensitivity adjustor distance adjustor 8 dia. indicator emitter receiver two, m4 slotted hexagonal bolts lens (14 x 47) (a) (see note) optical axis two 4.4 dia. holes two, m 4 holes 20 mounting holes e3s-ls3c1d e3s-ls3rc4 cord: 4-mm dia., 18/0.12, 3-conductor standard length: 2 m weight: approx. 60 g indicator e3s-ls3c1d timer volume e3s-ls3rc4 sensitivity adjustor 8 dia. optical axis optical axis two, m3 holes
e3s-ls e3s-ls 7 precautions sensing distance adjustment e3s-ls10xe4 adjustment method 1. set the pointer of the sensitivity adjuster to the center of its revolution range. 2. turn the distance adjuster fully counterclockwise to the ?s? position. 3. set the sensing object in position. 4. turn the distance adjuster gradually clockwise to a point where both the light and st ability indicators light. fix the distance adjuster at that point. 5. adjust sensitivity. distance adjuster object sensed background object e3s-ls20xe4 adjustment method 1 when the quantity of light reflected from the object is greater than that from the background object, adjust the sensing distance in the following sequence: 1. set the pointer of the sensitivity adjuster to the center of its revolution range. 2. turn the distance adjuster fully counterclockwise to the ?s? position. 3. set the sensing object in position. 4. turn the distance adjuster gradually clockwise to a point where both the light and st ability indicators light. fix the distance adjuster at that point. 5. adjust sensitivity. distance adjuster object sensed background object adjustment method 2 when the quantity of light reflected from the object is greater than that from the background object, adjust the sensing distance in the following sequence: 1. set the pointer of the sensitivity adjuster to the center of its revolution range. 2. turn the distance adjuster fully counterclockwise to the ?l? position. 3. remove the sending object. 4. turn the distance adjuster gradually clockwise to a point where both the light and st ability indicators light. fix the distance adjuster at that point. 5. adjust sensitivity.
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