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| csm_a3c_ds_e_2_1 1 a3c pushbutton switch (lighted/non -lighted) (cylindrical 12-dia.) pushbutton switch series with cylindrical 20-mm 12-dia. body ? high-intensity unif orm surface lighting. ? round body enables easy hole making. ? miniature size with excelle nt feeling of operation. rohs compliant refer to safety precautions for all pushbutton switches and safety precautions on page 12. list of models appearance model rectangular models a3cj square models a3ca round models a3ct specifications: refer to page 8. dimensions: refer to page 10. accessories: refer to page 7. precautions for correct use and sa fety precautions: refer to page 12.
a3c 2 model number legend .............................................when placing your order, specify t he individual component part model numbers of the pushbutton, lamp (lighted models only) , and switch, as listed in the ordering tables below. for information on combinations, refer to ordering information on page 3. (1) (2) (3) (4) (5) (6) a3c j - 9 0 a 1 - 24e r (1) shape of pushbutton sym- bol shape j rectan- gular a square t round (6) color of pushbutton for led lamp for incandescent lamp for non- lighted models sym- bol color r red y yellow g green w white sym- bol color r red y yellow g green a blue w white sym- bol color r red y yellow g green w white a blue b black (3) switch specifications standard load microload ? standard load 0.5 a at 250 vac 1 a at 125 vac 1 a at 30 vdc ? microload 0.1 a at 125 vac 0.1 a at 30 vdc minimum applicable load 1 ma at 5 vdc momentary-action: self-resetting alternate-action: self-holding sym- bol operation amomentary 1a1b b alternate sym- bol operation emomentary 1a1b f alternate (4) lighted/non- lighted ? colored-illumina- tion models are also available. refer to page 4. "colored-illumi- nation" models operate in the way shown be- low: sym- bol type 0 non-lighted 1 illumination only (5) lighting method led lamp-lighted models incandescent lamp-lighted models non-lighted models no symbol sym- bol operating voltage 05e 5 vdc 12e 12 vdc 24e 24 vdc sym- bol operating voltage 06 5 vac/vdc 14 12 vac/vdc 28 24 vac/vdc white color the built-in led is colored. unlit lit (2) terminal type sym- bol type 0 solder terminal a3c 3 ordering information ordering as a set ................................ the model numbers used to order sets of units are given in the following tables. one set compri ses the pushbutton, lamp (lighted models only), and switch. lighted pushbutton s witches (spst-no+spst- nc solder terminals) note: 1. enter the desired color symbol for the pushbutton in the @ at the end of the model number. 2. there are also alternate-operation models that can be used for microloads. refer to the switch table on page 6. * black ("b") pushbuttons are only available for non-lighted models. operation standard load microload momentary operation (self-resetting) alternate operation (self-holding) momentary operation (self-resetting) pushbutton color symbol (color) shape lighting set set set rectangular (a3cj) led lamp a3cj-90a1-05e @ a3cj-90b1-05e @ a3cj-90e1-05e @ r: red y: yellow g: green w: white a3cj-90a1-12e @ a3cj-90b1-12e @ a3cj-90e1-12e @ a3cj-90a1-24e @ a3cj-90b1-24e @ a3cj-90e1-24e @ incandescent lamp a3cj-90a1-06 @ --- --- r: red y: yellow g: green w: white a: blue b: black * a3cj-90a1-14 @ a3cj-90a1-28 @ a3cj-90b1-28 @ non-lighted a3cj-90a0- @ a3cj-90b0- @ a3cj-90e0- @ square (a3ca) led lamp a3ca-90a1-05e @ a3ca-90b1-05e @ a3ca-90e1-05e @ r: red y: yellow g: green w: white a3ca-90a1-12e @ a3ca-90b1-12e @ a3ca-90e1-12e @ a3ca-90a1-24e @ a3ca-90b1-24e @ a3ca-90e1-24e @ incandescent lamp a3ca-90a1-06 @ --- --- r: red y: yellow g: green w: white a: blue b: black * a3ca-90a1-14 @ a3ca-90a1-28 @ a3ca-90b1-28 @ non-lighted a3ca-90a0- @ a3ca-90b0- @ a3ca-90e0- @ round (a3ct) led lamp a3ct-90a1-05e @ a3ct-90b1-05e @ a3ct-90e1-05e @ r: red y: yellow g: green w: white a3ct-90a1-12e @ a3ct-90b1-12e @ a3ct-90e1-12e @ a3ct-90a1-24e @ a3ct-90b1-24e @ a3ct-90e1-24e @ incandescent lamp a3ct-90a1-06 @ --- --- r: red y: yellow g: green w: white a: blue b: black * a3ct-90a1-14 @ a3ct-90a1-28 @ a3ct-90b1-28 @ non-lighted a3ct-90a0- @ a3ct-90b0- @ a3ct-90e0- @ rectangular models a3cj square models a3ca round models a3ct individual models: refer to pages 5 to 6. (the pushbutton, lamp, and switch can be ordered separately.) specifications: refer to page 8. dimensions: refer to page 10. accessories: refer to page 7. a3c 4 ordering information illumination-only and colore d-illumination led models "illumination only" describes led models for which the screen color is the same whether the led is lit or not. example: red led "colored illumination" describes led model s for which the screen color is white when the led is not lit and changes to the colo r of the led lamp when the led is lit. example: red led ordering: with colored-illumination models, order the pushbu tton, lamp, and switch as shown in the following table. illuminated color pushbutton lamp (led) switch red ip40 a3c @ -500w enter one of the following sym- bols in @ . j: rectangular a: square t: round a16- @ dr enter one of the following symbols in @ . 5: 5 vdc 12: 12 vdc 24: 24 vdc refer to page 6. make the se- lection according to the shape of the pushbutton. yellow a16- @ dy green a16- @ dg cap (red) legend plate (milky white) reflective plunger led lamp (red) - - - lamp pushbutton not lit red lit red white cap (semi-transparent) legend plate (milky white) reflective plunger led lamp (red) - - - lamp pushbutton not lit white lit red a3c 5 ordering information ordering individually ............... pushbuttons, lamps, and switches can be ordered s eparately. combinations t hat are not available as sets can be created using individual units. also, store the parts as spares for maintenance and repairs. ordering: specify a model numbe r from the following page. led lamp operation unit lamps led lamp incandescent lamp switch non-lighted models operation unit switch ordering set combinations: refer to page 3. specifications: refer to page 8. dimensions: refer to page 10. accessories: refer to page 7. a3c 6 ordering information ordering individually ................pushbuttons, lamps, and switches c an be ordered separately. combinati ons that are not available as sets can be created using individual units. also, store the parts as spares for maintenance and repairs. pushbuttons led lamp note: the red, yellow, and white pushbuttons listed above can be used with either led lamp-lighted models or incandescent lamp-lighted models. incandescent lamp non-lighted models note: models other than black can also be used with incandescent lamps. lamps led lamp switches shape button color rectangular square round red a3cj-500r a3ca-500r a3ct-500r yellow a3cj-500y a3ca-500y a3ct-500y green a3cj-500gy a3ca-500gy a3ct-500gy white a3cj-500w a3ca-500w a3ct-500w shape button color rectangular square round red a3cj-500r a3ca-500r a3ct-500r yellow a3cj-500y a3ca-500y a3ct-500y green a3cj-500g a3ca-500g a3ct-500g white a3cj-500w a3ca-500w a3ct-500w blue a3cj-500a a3ca-500a a3ct-500a shape button color rectangular square round red a3cj-500r a3ca-500r a3ct-500r yellow a3cj-500y a3ca-500y a3ct-500y green a3cj-500g a3ca-500g a3ct-500g white a3cj-500w a3ca-500w a3ct-500w blue a3cj-500a a3ca-500a a3ct-500a black a3cj-501b a3ca-501b a3ct-501b color rated voltage red yellow green white 5 vdc a16-5dr a16-5dy a16-5dg a16-5dw 12 vdc a16-12dr a16-12dy a16-12dg a16-12dw 24 vdc a16-24dr a16-24dy a16-24dg a16-24dw sealing degree of protection: ip40 shape rectangular square round contact type switch action terminal standard load spst-no+ spst nc momentary solder a3cj-7011 a3ca-7011 a3ct-7011 alternate a3cj-7021 a3ca-7021 a3ct-7021 microload momentary solder a3cj-7111 a3ca-7111 a3ct-7111 alternate a3cj-7121 a3ca-7121 a3ct-7121 incandescent lamp rated voltage model 6 vac/dc a16-5 14 vac/dc a16-12 28 vac/dc a16-24 ordering set combinations: refer to page 3. specifications: refer to page 8. dimensions: refer to page 10. accessories: refer to page 7. a3c 7 ordering information accessories, repl acements, and tools accessories tools replacements name appearance classification model remarks socket wire-wrap terminal a3c-4101 cannot be used with insulation cover. pcb terminal a3c-4102 solder terminal A3C-4103 insulation cover --- a3c-3002 cannot be used with socket. switch guard for rectangular models a3cj-5050 cannot be used with dust cover. for square, round models a3ca-5050 dust cover for rectangular models a3cj-5060 cannot be used with switch guard. can be used with dust cover attached. name appearance classification model remarks tightening tool --- a3c-3004 the tightening torque is 0.20 to 0.39 nm. extractor --- a3pj-5080 --- name appearance classification model remarks legend plate for rectangular models a3cj-5201 one legend plate (milk-white) is supplied per standard switch. for square models a3ca-5201 for round models a3ct-5201 specifications: refer to page 8. dimensions: refer to page 10. a3c 8 approved standard ratings ul (file no. e41515), csa (file no. lr45258) standard load: 0.5 a at 250 vac 1 a at 125 vac 1 a at 30 vdc microload: 0.1 a at 125 vac 0.1 a at 30 vdc note: certification has been obtained for the switch unit. for detailed information on individual products that have received certification, consult your supplier. ccc (gb14048.5) standard load: 0.5 a at 250 vac microload: 0.1 a at 250 vac ratings note: the above ratings are for testing under the following conditions: 1) load: resistive load 2) mounting conditions: no vibrations or shock 3) temperature: 20 c 2 c 4) operation frequency: 20 operations/minute * the minimum permissible load is 1 ma, 5 vdc. led lamp incandescent lamp characteristics *1. with alternate-operation models, one operation cycle consists of set and reset operations. *2. the figure given above for the dielectr ic strength between lamp terminals is for when there is no led lamp or incandescent lamp mounted. *3. no malfunction for more than 1s. operating characteristics * alternate operation models only. contact form model item ac resistive load dc resistive load standard load 0.5 a at 250 vac 1 a at 125 vac 1 a at 30 vdc microload * 0.1 a at 125 vac 0.1 a at 30 vdc rated voltage rated current operating voltage internal limiting resistance 5 vdc 30 ma 5 vdc 5% 33 12 vdc 15 ma 12 vdc 5% 270 24 vdc 10 ma 24 vdc 5% 1,600 rated voltage rated current operating voltage 6 vac/dc 60 ma 5 vac/dc 14 vac/dc 40 ma 12 vac/dc 28 vac/dc 24 ma 24 vac/dc operat- ing fre- quency mechanical momentary-action models: 120 operations/minute max. alternate-action models: 60 operations/minute max. * 1 electrical 20 operations/minute max. contact resis- tance standard load 50m max. microload 100m max. insulation resistance 100 m min. (at 500 vdc) dielectric strength between terminals of same polarity 1,000 vac, 50/60 hz for 1 min between terminals of different polarity 2,000 vac, 50/60 hz for 1 min between each terminal and ground 2,000 vac, 50/60 hz for 1 min between lamp terminals 1,000 vac, 50/60 hz for 1 min * 2 vibration resis- tance malfunction 10 to 55 hz, 1.5-mm double amplitude * 3 shock resis- tance destruction 500 m/s 2 malfunction 150 m/s 2 * 3 durability mechanical momentary-operation models: 1,000,000 operations min. alternate-operation models: 100,000 operations min. * 1 electrical 100,000 operations min. weight approx. 5 g a3c 9 nomenclature model structure display unit structure type specifications (1) shape of pushbutton rectangular square round (a3cj) (a3ca) (a3ct) ------ (2) led lamp-lighted models: red, yellow, green, white incandescent lamp-lighted models: red, yellow, green, white, blue non-lighted models: red, yellow, green, white, blue, black ------ (3) led lamp incandescent lamp (4) standard load 0.5 a at 250 vac 1 a at 125 vac 1 a at 30 vdc microload 0.1 a at 125 vac 0.1 a at 30 vdc minimum applicable load: 1 ma at 5 vdc note: the a3cj model is shown here as a re p resentative exam p le. pushbutton switch lamp (2) color of pushbutton (1) shape of pushbutton (4) switch specifications (3) type of lamp color cap legend plate reflective plunger a3c 10 dimensions (unit: mm) terminal connections panel cutout (top view) ? if the panel is to be finished (e.g., coated), make sure that the panel meets the specified dimensions after the coating. rectangular models/a3cj square models/a3ca round models/a3ct terminal spst-no + spst-nc lighted and non-lighted models solder terminal accessories used rectangular/a3cj square/a3ca, round/a3ct switch only note: recommended panel thickness: 1.0 to 3.2 mm. note: recommended panel thickness: 1.0 to 3.2 mm. with switch guard with dust cover ---------- 0.6 m12 1 20 1 6 9.5 9.5 26.5 15.7 11.8 18 14 0.6 m12 1 20 9.5 9.5 6 26.5 11.8 11.8 14 14 0.6 m12 1 20 9.5 9.5 6 26.5 11.8 dia. 14 dia. 0.6 t0.4 6.5 1.6 lamp terminal t0.3 no no nc l+ l- nc 2 0.8 0.8 terminal hole terminal arrangement (bottom view) 19 min. 7.5 0.1 2 dia. (lock hole) 5.5 0.1 15 min. 12 dia. +0.2 0 12 dia. +0.2 0 15 min. 22.5 min. 7.5 0.1 2 dia. 5.5 0.1 19 min. 12 dia. +0.2 0 19 min. 19 min. 12 dia. +0.2 0 23.5 min. 7.5 0.1 2 dia. 5.5 0.1 19.5 min. 12 dia. +0.2 0 a3c 11 dimensions (unit: mm) accessory mounting dimensions dimensions with socket mounted (the diagrams below show the external dimensions for rectangular models as representative models.) switch guard wire-wrap terminal/a3c-4101 pcb termina l/a3c-4102 solder terminal/A3C-4103 dust cover a3cj-5060 legend plate note: 1. the thickness is 0.8 mm. 2. since the legend plate is made of polycarbonate, use alcohol-based paints such as melanin, phthalic acid, or acrylic paint when marking the legend. insulation cover a3c-3002 13.9 dia. 16.7 33.6 15.8 1 3.55 3.55 1 7 3.55 13.9 dia. 16.7 33.6 3.5 0.3 1.6 0.6 1 six, 0.8 dia. 9.7 0.1 5.1 0.1 7.4 0.1 pcb cutout (bottom view) 16.7 33 .6 5 3 .2 3 .2 0. 3 7 1.6 1 3 .9 di a . 4.7 2 0.5 0. 8 terminal hole dimensions guard (transparent) holder (black) 13.5 18 1 24.5 18 9 21.5 torsion spring rectangular a3cj-5050 guard (transparent) holder (black) 13.5 18 24.5 18 9 18 torsion spring square/round a3ca-5050 cover b (transparent) cover a (black) 13.8 18 24.5 1 22.5 18.5 9.6 10.1 10.1 10.1 10.1 di a . 0. 8 14 rectangular square round 1 3 .9 di a . 1 8 33 .6 a3c 12 safety precautions refer to safety precautions for all pushbutton switches . do not apply a voltage higher than the maximum rated operating voltage between the lamp terminals, as there is a risk that the incandescent lamp or led lamp will be damaged, and the pushbutton will be ejected. when replacing the incandescent lamp, first turn off the power supply, and then wait 10 minutes before performing replacement, as the lamp is still hot immediately after the power is turned off, so there is a risk of burns. mounting ? to prevent electric shoc k or a fire, always make sure that the power is turned off before mounting, removing, or wiring the switch, or performing maintenance. ? do not tighten the mounting ring excessively using pliers or a similar tool. excessive tightening may damage the mounting ring. (tightening torque: 0.20 to 0.39 n m {20 gf to 40 gf}) wiring ? when wiring, use wires of a size appropriate for the applied voltage and carry current. perform solderi ng correctly under the conditions given below. using the switch with the wires soldered incorrectly may cause the terminals to become abnormally hot and cause a fire. 1. soldering iron tip temperature: 350 c max. within 3 seconds. 2. dip soldering: at 350 c within 3 seconds. wait for one minute after solderi ng before exerting any external force on the solder. ? use a non-corrosive rosin liquid for the flux. ? perform wiring so that the wire sheaths do not come into contact with the switch. if this is unavoidabl e, use wires that can withstand temperatures of 100 c min. ? after wiring to the switch has been completed, ensure an appropriate insulation distance. operating environment ? do not use in locations that are s ubject to dust, oil, or metal filings as these may penetrate the interior of the switch and cause malfunction. using microloads ? using a standard load switch for opening and closing a microload circuit may cause wear on the cont acts. use the switch within the operating range. (refer to the diagram below.) even when using microload models within the operatin g range shown below, if inrush current occurs when the contact is opened or closed, it may cause the contact surface to become rough, and so decrease life expectancy. therefore, insert a contact protection circuit where necessary. the minimum applicable load is the n-level reference value. this value indicates the malfunction reference level for the reliability level of 60% ( 60) (conforming to jis c5003). the equation, 60 = 0.5 x 10 ? 6 /times indicates that the estimated malfunction rate is less than 1/2,000,000 with a reliability level of 60%. led ? resistance to limit the led current is provided internally and so an external resistance is not required. caution precautions for correct use rated voltage internal limiting resistance 5 vdc 33 12 vdc 270 24 vdc 1,600 microload area standard load area invalid area 0.1 1 10 100 1,000 100ma 150ma 1ma 5 12 24 30 0.15ma 26ma 100ma current (ma) 0 voltage (v) a3c 13 application mounting and replacing the pushbutton (1) mounting direction for the pushbutton/display and lamp lighted pushbutton switch ? insert the lamp (incandescent lamp or led lamp) into the pushbutton so that the lamp guide fits into the wider gap between the projections on the pushbutton. indicator ? with indicators, the lamp is inserted facing the opposite direction (i.e., at 180 ) to that for lighted pushbutton switches. note: push the projections on the lamp into the grooves on the pushbutton/ display. the lamp for lighted pushbutton switches moves, but the lamp for indicators is fixed. (2) mounting direction for the pushbutton/display and switch ? insert the pushbutton/display into the switch so that the lamp guide is aligned with the non-proj ecting part of the switch. ? apply a pressure between 9.8 and 24.5 n. note: 1. the mounting direction for indicators is 180 to that for lighted pushbutton switches. be sure to insert the legend plate and other parts with the correct orientation. 2. if the terminals of the lamp become bent, it may be impossible to fit them into the lamp terminal holes. ensure that the terminals are straight when they are inserted. 3. take particular care about the mounting direction with the round models (a3ct). (3) removing the pushbutton/display hold the recessed portions on the cap of the pushbutton and pull. note: do not use tools such as pliers to remove the pushbutton as this may damage the cap. panel mounting ? insert the switch from the front of the panel. mount the mounting nut from the terminal end of the switch and tighten it. ? there are projections on the terminal end of the switch which may, depending on the orientation, block the nut. in this case, turn the nut until it is possible to mount it. tighten the nut to a torque between 0.20 and 0.39 nm. ? if soldering is used, mount the mounting nut first. lead wires and mounds of solder may make it impossible to mount the nut after soldering. socket mounting ? after securing the switch to the panel using the mounting nut, insert the socket into the switch. ? align the positioning holes of the so cket with the projections of the switch before inserting the socket. mounting the in sulation cover ? after securing the switch to the panel using the mounting nut, pass the lead wires through the holes in the insulation cover and then perform wiring. hold the insulation cover so that the cylindrical hole is facing the switch, and insert the lead wires from the end with the barriers. ? after wiring is completed, mount the insulation cover by pushing it into the switch. projection s led/l a mp g u ide led/l a mp g u ide groove of the display projection of the led/lamp led/lamp guide projection of the switch rece ss mounting nut panel panel projection of the switch positioning hole of the socket insulation cover attached to switch switch terminal a3c 14 mounting the dust cover 1. the dust cover separates into 2 parts: the cap and the mounting frame. 2. insert the switch into the mounting frame. (align the lock projection with the recess on the mounting frame.) 3. insert the switch in the state described in step 2 into the panel. (align the lock protrusion on the mounting frame with the hole in the panel.) 4. mount the mounting nut from the back of the panel and tighten it. 5. insert the cap into the mounting frame. ensure that the entire perimeter of the cap is properly inserted into the mounting frame by pressing down on the cap from different directions. mounting the switch guard 1. insert the switch into the switch guard. 2. insert the switch into the panel in the state described in step 1. 3. mount the mounting nut from the back of the panel and tighten it. cap (transparent) mounting frame mounting nut panel lock protrusions switch mounting nut panel holder (black) guard (transparent) ? applic a tion ex a mple s provided in thi s doc u ment a re for reference only. in a ct ua l a pplic a tion s , confirm e qu ipment f u nction s a nd sa fety b efore us ing the prod u ct. ? con su lt yo u r omron repre s ent a tive b efore us ing the prod u ct u nder condition s which a re not de s cri b ed in the m a n ua l or a pplying the prod u ct to n u cle a r control s y s tem s , r a ilro a d s y s tem s , a vi a tion s y s tem s , vehicle s , com bus tion s y s tem s , medic a l e qu ipment, a m us ement m a chine s , sa fety e qu ipment, a nd other s y s tem s or e qu ipment th a t m a y h a ve a s erio us infl u ence on live s a nd property if us ed improperly. m a ke su re th a t the r a ting s a nd perform a nce ch a r a cteri s tic s of the prod u ct provide a m a rgin of sa fety for the s y s tem or e qu ipment, a nd b e su re to provide the s y s tem or e qu ipment with do ub le sa fety mech a ni s m s . omron corporation electronic and mechanical component s company contact: www.omron.com/ecb cat. no. a0 3 0-e1-05 0 8 12(0207)(o) note: do not u s e thi s document to operate the unit. |
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