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limit switches ?607 limit switches ?607 arct1b272e 200609-1yt please contact .......... specifications are subject to change without notice. printed in japan. automation controls business unit head office: 1048, kadoma, kadoma-shi, osaka 571-8686, japan telephone: +81-6-6908-1050 facsimile: +81-6-6908-5781 http://www.nais-e.com/ all rights reserved ? 2006 copyright matsushita electric works, ltd. matsushita electric works, ltd. these materials are printed on ecf pulp. these materials are printed with earth-friendly vegetable-based (soybean oil) ink. limit switches arct1b272e ?6.9 matsushita electric works, ltd. matsushita electric works, ltd.
52 a compact and accurate vertical limit switch. type with a lamp which makes main- tenance convenient; either a neon ac powered lamp or an led dc powered lamp. features 1. compact design approximately 1/3 of the az5 limit switches 2. au-clad contacts that can even use low level circuit and little chattering and bouncing the built-in switch has au-clad contacts with excellent contact reliability and uses a crossbar contact method, and more- over, has a dual cutoff circuit (1 form a 1 form b contact) with little chattering and bouncing due to computer-operated analysis. 3. easy wiring with full-open terminals when the cover is removed, the termi- nals are open as far as the flank, so the necessity to insert your fingers into a case to complete the wiring has been removed. moreover, the wiring space is large despite the compact size, and the terminals are spread in a tiered array, so that wiring work can be completed very easily. the cable can either be screwed in directly, or can use u-shaped and circu- lar pressure terminals. 4. mounting are possible to both front and back 5. type with a lamp that can be used with a wide range of voltages ?with neon lamp compatible with: 100 and 200v ac ; even at 100v ac, sufficient luminosity is achieved through the diamond-cut lens. also with a long lifespan of more than 20 thousand hours. ?with led lamp covers 6 to 48v dc and comes in three types, 6v dc , 12v dc , 24 to 48v dc uses two highly luminescent leds and in addition, sufficient luminosity is achieved through the diamond-cut lens. 6. lamp connection can be either spring type or lead wire type ?spring type (wiring unnecessary) (with neon or led lamp type) wiring is unnecessary because the lamp is directly connected to the terminals. by simply changing the direction of the lamp holder attachment, it is possible to dis- play both lights during inoperability and during operation (however, if both n.o. and n.c. loads are connected, only the inoperability lamp can be displayed.) construction permits lamp attach- ment method to be changed. ?lead wiring type (led lamp type only) because the wiring can be made parallel to the load, current leakage from the lamp can be reduced to 0. even with a slight leak, the electronic circuit incurring the leak can be used safely. 7. dust-proof, waterproof, oil resistant construction the main unit and the cover are sealed with rubber packing, and the cord runner is doubly sealed by the cord vent. the actuator is sealed by both a rubber cap and an o ring in all models. also, the lens and cover are formed simultaneous- ly with the lamp type, and moreover, a nameplate is affixed to the upper sur- face, thereby improving the already excellent waterproof capabilities. (note: applications directly involving the cord entrance and the locations which are always wet and oily, or submersion in water or oil, cannot be used.) typical applications ideal for general plant facilities such as engineering machinery, conveyer machinery, and assembly lines led lamp type is also compatible with low-voltage dc control circuits such as in pcs and computers. rohs directive compatibility information http://www.nais-e.com/ spring washer m4 attachment bolt m4 attachment nut cover terminal screw head block body cover attachment screw cord vent cable m5 attachment bolt spring washer standard type with lamps (roller arm) approx. 1/3 vl az5 type r operating lamp inoperability lamp (with shipping) inner construction compact size limit switches vl (az8) mini limit switches
53 product type 1. standard type actuator part no. push plunger az8111 2. with neon lamp actuator lamp rating lamp connection push plunger 100 to 200v ac part no. az811106 roller plunger az811206 cross roller plunger az812206 roller arm az810406 adjustable roller arm az810806 adjustable rod az810706 flexible rod az816606 spring wire az816906 spring type roller plunger az8112 cross roller plunger az8122 roller arm az8104 adjustable roller arm az8108 adjustable rod az8107 flexible rod az8166 spring wire az8169 note) when ordering an overseas-specified product,refer to the foreign standards given below. note) when ordering an overseas-specified product,refer to the foreign standards given below. notes) 1. led rating 6v dc type is available. when ordering, add suffix 162(spring type) or 662(lead wire type) to the standard part no. 2.the 24 to 48v dc rated lamp is recommended for pc input use. 3. the roller arm and adjustable roller arm are available with metal rollers on a custom-made basis. please inquire. 3. with led actuator push plunger az8111161 az811116 lamp rating 12v dc part no. 24 to 48v dc lamp connection spring type lead wire type 4. option application part no. vl limit conduit adapter vl, vl with lamp, vl-t az8801 roller plunger az8112161 az811216 cross roller plunger az8122161 az812216 roller arm az8104161 az810416 adjustable roller arm az8108161 az810816 adjustable rod az8107161 az810716 flexible rod az8166161 az816616 spring wire az8169161 az816916 push plunger az8111661 az811166 roller plunger az81122661 az811266 cross roller plunger az8122661 az812266 roller arm az8104661 az810466 adjustable roller arm az8108661 az810866 adjustable rod AZ8107661 az810766 flexible rod az8166661 az816666 spring wire az8169661 az816966 standard applicable product part no. ul file no. : e122222 ratings : 5a 250v ac pilot duty b300 product type : standard model, with neon lamp c-ul file no. : e122222 ratings : 5a 250v ac pilot duty b300 product type : standard model, with neon lamp t ? v file no. : j9551203 ratings : ac-15 2a/250v~ product type : standard model only order by standard part no. however, add 9 to the end of the part no. for the model with neon lamp. order by standard part no. foreign standards vl (az8)
54 specifications 1. rating 1) standard type load rated control voltage resistive load (cos ] 1) inductive load (cos ] 0.4) 5a 125v ac 3a 5a 250v ac 2a 0.4a 125v dc 0.1a 2) types with neon lamp and with led types rated control voltage resistive load (cos ] 1) inductive load (cos ] 0.4) with neon lamp with led 125v ac 5a 3a 240v ac 5a 2a 24v dc 3a 2. characteristics 1 form a 1 form b in the free position contact arrangement 3. en60947-5-1 performance 4. operating characteristics item rated insulation voltage (ui) rated impulse withstand voltage (uimp) switching overvoltage rated enclosed thermal current (ithe) conditional short-circuit current short-circuit protection device protective construction pollution degree rating 250vac 2.5kv 2.5kv 5a 100a 10a fuse ip64 3 15m ? (by voltage drop 6 to 8v dc at rated current) initial contact resistance, max. gold clad silver alloy (cadmium free) contact material min. 100m ? initial insulation resistance (at 500v dc) 1,000vrms for 1 min between non-consecutive terminals 2,000vrms for 1 min between dead metal parts and each terminal 2,000vrms for 1 min between ground and each terminal initial breakdown voltage max. 98m/s 2 {10g} in the full operating position max. 294m/s 2 {30g} vibration resistance standard type: max. 55hz type with indicator: 10 to 50hz, double amplitude of 1.5mm 10 7 (at 120 cpm) shock resistance max. mechanical 3 10 5 (at rated resistive load) 5 10 6 (magnetic contactor fc-100 200v ac load) electrical min. 2 10 4 hours (neon lamp type) life of lamp 20 to +60 c 4 to +140 f /max. 95% ambient temperature/ambient humidity 120 cpm max. operating speed expected life (min. operations) characteristics actuator totaltravel (t.t.), min. mm inch overtravel (o.t.), min. mm inch movement differential (m.d.), max. mm inch pretravel (p.t.), max. mm inch r.f. (n {gf}) min. o.f. (n {gf}) max. 1.47 {150} 8.83 {900} 5.88 {600} 0.49 {50} 20 10 75 95 1.5 .059 0.7 .028 4 .028 5.5 .217 push plunger roller plunger cross roller plunger roller arm 7.84 {800}~3.35 {342} 0.49 {50}~0.21 {21} 20 10 75 95 adjustable roller arm 7.84 {800}~1.99 {203} 0.49 {50}~0.12 {12} 20 10 75 95 adjustable rod 0.88 {90} 30 (1.181) 20 ( .787 ) 50 ( 1.969 ) flexible rod spring wire *characteristics measured at bent condition: min. radius 100mm 3.937inch . notes) 1. keep the total travel values in the specified range. otherwise the actuator force may rise to several times the operat ing force, resulting in a mechanical failure or much shorter service life. 2. for the operating characteristics, refer to the technical information. protective construction iec vl mini limit switch vl mini limit switch (with lamp) ip60 ip64 5. protective construction types rated operating voltage operating voltage range internal resister 100 to 200v ac 80 to 240v ac 120k ? 6v dc 5 to 15v dc 2.4k ? 12v dc 9 to 28v dc 4.7k ? 24 to 48v dc 20 to 55v dc 15k ? neon lamp led 6.lamp rating data 1. life curve 200 30 0 100 load current , a 300 400 500 1000 life curve , resistive load ( ac 240vc cos =1 ) 510 no. of operating , million times 2. actual load life curve (relay coil load) various relay loads ( va ) vc-20 0 0.5 nk 3 hp 1.0 hc hg 5 500 1000 260 fc-35 50 fc-10 fc-100 700 no. of operating , million times wiring diagram output circuit terminal 12 11 n.c. n.c. vl 14 13 n.o. n.o. 12 14 11 13 note: the fc magnetic contactor series is 200v ac. the nk is 2 form c 24v dc type. vl (az8)
55 .803 .012 20.4 0.3 m4 arm fixing nut 38.1 25 15.1 30.3 15.1 18.5 ( roller can be rotated fixing screw m4 arm 18 dia. 7 ( with hexagonal m t p 0 2 r30 12.5 x a 40.2 0.8 45.2 0.8 operation indicator 28 21 0.2 56 0.3 2-m5 ( p=0.8 ) tapped mounting holes 7 2-m5 ( p=0.8 ) tapped mounting holes 10.2 .827 .008 1.102 2.205 .012 .402 2-m5 ( p=0.8 ) mounting holes 2-m5 ( p=0.8 ) 7 mounting holes .276 in depth .276 in depth 2.520 64 m3 6 0 +0.2 2-m3 23 2-4.1 mounting holes cover screw dia. cover screw .492 and locked in any position through 360 ) .594 .984 1.5 20.4 0.3 .803 .012 .594 1.193 .728 1.780 .031 1.583 .031 41.2 0.8 36.2 0.8 1.622 .031 1.425 .031 .728 18.5 64 2.520 .551 14 nylon roller .551 14 10.2 .402 7.5 0.2 .295 .008 7.5 0.2 .295 .008 holes ) .803 .012 20.4 0.3 pt 1.5max operation indicator 28 21 0.2 56 0.3 25 15.1 14 2-m5 ( p=0.8 ) tapped mounting holes 7 2-m5 ( p=0.8 ) tapped mounting holes 64 30.3 20.4 0.3 38 4 10.2 .827 .008 1.102 2.205 .012 .594 .984 2.520 .157 .402 .551 .402 10.2 .594 15.1 2-m5 ( p=0.8 ) mounting holes 2-m5 ( p=0.8 ) 7 mounting holes .157 4 1.193 .803 .012 .276 in depth .276 in depth 2.520 64 .551 14 14.8 .583 1.496 12.5 dia. 3.8 m3 6 0 +0.2 2-m3 23 2-4.1 stainless steel roller mounting holes cover screw dia. cover screw standard type with lamp 7.5 0.2 .295 .008 7.5 0.2 .295 .008 .803 .012 20.4 0.3 pt 1.5max operation indicator 28 21 0.2 56 0.3 25 15.1 14 2-m5 ( p=0.8 ) tapped mounting holes 7 2-m5 ( p=0.8 ) tapped mounting holes 64 30.3 20.4 0.3 38 4 10.2 .827 .008 1.102 2.205 .012 .594 .984 2.520 .157 .402 .551 .402 10.2 .594 15.1 2-m5 ( p=0.8 ) mounting holes 2-m5 ( p=0.8 ) 7 mounting holes .157 4 1.193 .803 .012 .276 in depth .276 in depth 2.520 64 .551 14 14.8 .583 1.496 m3 6 0 +0.2 2-m3 23 2-4.1 mounting holes cover screw dia. cover screw stainless steel roller 12.5 dia. 3.8 standard type with lamp 7.5 0.2 .295 .008 7.5 0.2 .295 .008 dimensions push plunger standard type az8111 20.4 0.3 .803 .012 operation indicator 7 m3 6 0 +0.2 2-m3 23 2-4.1 28 21 0.2 56 0.3 25 15.1 14 2-m5 ( p=0.8 ) tapped mounting holes 7 2-m5 ( p=0.8 ) tapped mounting holes 64 30.3 20.4 0.3 pt 1.5max 3 26.5 4 10.2 .827 .008 1.102 2.205 .012 1.043 .118 .594 .984 2.520 .157 .402 .551 .402 10.2 .594 15.1 2-m5 ( p=0.8 ) mounting holes 2-m5 ( p=0.8 ) 7 mounting holes .157 4 1.193 .803 .012 .276 dia. .276 in depth .276 in depth 2.520 64 .551 14 stainless steel plunger mounting holes cover screw dia. cover screw standard type with lamp 7.5 0.2 .295 .008 7.5 0.2 .295 .008 general tolerance: 0.4 .016 general tolerance: 0.4 .016 general tolerance: 0.4 .016 roller plunger standard type az8112 cross roller plunger standard type az8122 general tolerance: 0.4 .016 roller arm standard type az8104 weight: 156.5g standard type with lamp vl (az8) mm inch
56 adjustable rod standard type az8107 m ( 30-118 ) adjustable lenght of rod p 0 2 t ( 44.9 ) 25 rod fastening plate rod mounting metal 15.1 2.6 x a ( 44.9 ) 36.3 0.8 mounting holes 2-4.1 2.205 .012 56 0.3 cover screw 2-m3 23 1.102 .827 .008 21 0.2 28 cover screw operation indicator m3 6 dia. +0.2 0 12.5 .492 position through 360 ) and locked in any ( roller can be rotated m4 rod fastening plate in depth mounting holes 2-m5 ( p=0.8 ) mounting holes 2-m5 ( p=0.8 ) standard type with lamp 2-m5 ( p=0.8 ) tapped mounting holes .551 14 mounting holes 2-m5 ( p=0.8 ) tapped 64 2.520 18.5 .728 .276 7 in depth .803 .012 20.4 0.3 1.193 30.3 .594 15.1 14 .551 64 2.520 .728 18.5 7 .276 5.5 .217 .102 dia. rod 10.2 .402 10.2 .402 ( 1.768 ) 1.429 .031 1.429 .031 ( 1.768 ) ( 44.9 ) 36.3 0.8 20.4 0.3 .803 .012 .594 .984 fastening screw with m6 mounting rod hexagonal holes screw with hexagonal holes rod mounting metal ( 44.9 ) ( 1.768 )( 1.768 ) m6 mounting rod hexagonal holes fastening screw with 7.5 0.2 .295 .008 7.5 0.2 .295 .008 general tolerance: 0.4 .016 flexible rod type standard type az8166 weight: 112g adjustable lenght of arm ( 30-70 ) p 0 2 t x a m 28.5 0.8 47.7 0.8 33.5 0.8 42.7 0.8 ( 46.4 ) 25 arm fastening plate 15.1 mounting holes 2-4.1 2.205 .012 56 0.3 cover screw 2-m3 23 1.102 .827 .008 21 0.2 28 cover screw operation indicator m3 6 dia. +0.2 0 12.5 .492 position through 360 ) and locked in any ( roller can be rotated m4 arm fastening in depth mounting holes 2-m5 ( p=0.8 ) mounting holes 2-m5 ( p=0.8 ) standard type with lamp 2-m5 ( p=0.8 ) tapped mounting holes .551 14 mounting holes 2-m5 ( p=0.8 ) tapped 64 2.520 18.5 .728 .276 7 in depth .803 .012 20.4 0.3 1.193 30.3 .594 15.1 7 .276 10.2 .402 20.4 0.3 .803 .012 .594 .984 plate screw with m6 arm fastening hexagonal holes ( 46.4 ) ( 1.827 )( 1.827 ) 18 dia. 7 nylon roller plate screw with hexagonal holes mounting metal 18.5 .728 64 2.520 14 .551 2.0 .079 2.0 .079 .402 10.2 1.878 .031 1.319 .031 1.122 .031 1.681 .031 1.319 .031 28.5 0.8 1.878 .031 47.7 0.8 33.5 0.8 1.681 .031 42.7 0.8 1.122 .031 7.5 0.2 .295 .008 .295 .008 7.5 0.2 hexagonal holes m6 arm fastening plate screw with mounting metal general tolerance: 0.4 .016 (should be used with less than 50mm 1.969inch of t.t.) adjustable roller arm standard type az8108 .803 .012 20.4 0.3 pt 30 max 25 100 1.5 41.5 5.8 dia. mounting holes 2-4.1 2.205 .012 56 0.3 cover screw 2-m3 23 cover screw operation indicator m3 6 dia. +0.2 0 standard type .803 .012 20.4 0.3 1.193 30.3 .594 15.1 64 2.520 14 .551 .402 10.2 2-m5 ( p=0.8 ) mounting holes 2-m5 ( p=0.8 ) 7 .276 in depth mounting holes with lamp 3 dia. 4 .118 .228 .157 mounting holes 2-m5 ( p=0.8 ) tapped mounting holes in depth 2-m5 ( p=0.8 ) tapped 7 .276 .157 4 64 2.520 .551 14 .984 nylon rod .402 10.2 3 dia. .118 .228 5.8 dia. 1.102 28 .827 .008 21 0.2 1.634 3.937 .059 15.1 .594 7.5 0.2 .295 .008 7.5 0.2 .295 .008 nylon rod general tolerance: 0.4 .016 (length of arm can be adjustable within 30 to 70mm 1.181 to 2.756inch by 1mm .039inch pitch) vl (az8) mm inch
57 .803 .012 20.4 0.3 51.5 pt 30 max stainless 1.2 dia. 25 100 1.5 mounting holes 2-4.1 2.205 .012 56 0.3 cover screw 2-m3 23 cover screw operation indicator m3 6 dia. +0.2 0 standard type .803 .012 20.4 0.3 7.5 0.2 .295 .008 1.193 30.3 .594 15.1 64 2.520 14 .551 .402 10.2 with lamp 4 .157 mounting holes 2-m5 ( p=0.8 ) tapped mounting holes in depth 2-m5 ( p=0.8 ) tapped 7 .276 .157 4 64 2.520 .551 14 .984 .402 10.2 1.102 28 .827 .008 21 0.2 3.937 .059 15.1 .594 7.5 0.2 .295 .008 2.028 steel wire .047 .047 stainless steel wire 1.2 dia. 2-m5 ( p=0.8 ) in depth mounting holes 7 .276 mounting holes 2-m5 ( p=0.8 ) spring wire standard type az8169 weight: 112g general tolerance: 0.4 .016 (should be used with less than 50mm 1.969inch of t.t.) vl (az8) option vl limit conduit adapter az8801 applicable wire electric wire name finished outside diameter vinyl cabtire cord (vctf) vinyl cabtire cable (vct) 8.7 to 11 dia. .343 to .433 dia. ( same as with the ( same as with the 28 21 ( front ) 23 14.8 ( side ) 27.8 18 56 part a t=7 max. .906 .709 13/64 .827 1.102 .583 1.094 .276 vl limit switch ) vl limit switch ) ( tighten up with no gap ) (a set of mounting hex. socket screws is supplied.) note: diagram shows adapter when installed to an az8104. mm inch
58 lamp lighting circuit 1. spring type 1) when connecting load to n.o. side: when the switch is at free position, the lamp is lit, and when the switch operates, the lamp turns off. (use the lamp holder in the same condition as when it was at the time of shipment.) 2) when connecting load to n.c. side: when connecting switch is at free posi- tion, the lamp turns off, and when the switch operates, the lamp is lit. (use the lamp holder, changing it direc- tion by 180 .) 3) when connecting loads to both n.o. and n.c. sides: same as in 1). (use the lamp holder in the same condi- tion as when it was at the time of ship- ment. in this case, it is impossible to use it, changing its direction by 180 .) (with led) 1) when giving indication on n.o. side and n.c. side, operation is same as that in the case of the spring type. however, when load is connected to both n.o. side and n.c. side, indication can be given on both n.c. side and n.o. side. 2) when the indication circuit is connect- ed with load in parallel: load performs the same operation as the indication circuit does. (when load operates, the lamp is lit, and when load is turned off, the lamp goes out.) more loads than for one circuit cannot be controlled. there is no leakage current. 2. lead wire type (only for types with led) built-in switch ac power source 13 11 neon lamp 14 n.c. 12 n.o. load resistor ~ 12 built-in switch dc power source 11 n.c. 14 n.o. 13 led load resistor + (with neon lamp) (with led) resistor neon lamp ac power source 12 14 built-in switch 13 11 n.c. n.o. load ~ load dc power source 12 built-in switch 11 n.c. load 14 n.o. 13 resistor led + (with neon lamp) (with led) built-in switch ac power source 13 14 11 n.c. 12 n.o. neon lamp load load resistor ~ load dc power source 12 built-in switch 11 n.c. load 14 n.o. 13 resistor led + (with neon lamp) dc power source built-in switch 11 12 n.o. 13 n.c. 14 led resistor load + mounting dimensions 1. surface mounting 1) when installation hole is tapped. depth of screw holes > 15mm .591inch washer mouting screw m4 .157 21 0.2 ( p=0.7 ) m4 .157 tap 2.205 .008 56 0.2 .827 .008 mounting screw washer mounting nut m4 .157 21 0.3 4-4.5 .177 dia. .827 .012 56 0.3 2.205 .012 washer t m5 .197 mounting screw 56 0.3 21 0.3 dia. .827 .012 2.205 .012 4-5.5 .217 2) through hole mounting thickness of panel < 5mm .197inch 2. rear mounting length of bolt < panel thickness t+7mm .276inch vl (az8) mm inch
59 1. over travel (o.t.) 1) when overtravel is too large, life is shortened due to possible damage to the mechanism. please use in the following appropriate range. 2. ambient conditions 1) because these switches are not of immersion protected construction, their use in water or oil should be avoided. also, locations where water or oil can normally impinge upon the switch or where there is an excessive accumula- tion of dust should be avoided. 2) the use of these switches under the following conditions should be avoided. if the following conditions should become necessary, we recommend consulting us first. use where there will be direct contact with organic solvents, strong acids or alkalis, or direct exposure to their vapors. use where inflammable or corrosive gases exist. 3) use within an ambient temperature of 20 to +60 c 4 to +140 f . (however, do not allow it to freeze.) 4) in order to maintain the reliability at a high level under practical conditions of use, the actual operating conditions should be checked for the benefit of the quality of the product. 5) if ot is too big, the life of limit switch will be shortened switching friction. use it with enough margin of ot. 70% of ot standard value will be good for use. 6) do not use the switch in a silicon atmosphere. case should be taken where organic silicon rubber, adhesive, sealing material, oil, grease or lead wire generates silicon. 7) when wiring, do not connect the lead wires directly to the terminals, but use the crimp terminals and tighten them to a torque of 0.39 to 0.59 n m {4 to 6 kg cm}. 8) avoid use in excessively dusty envi- ronments where actuator operation would be hindered. 9) when used outdoors (in places where there is exposure to direct sunlight or rain such as in multistory car parks) or in environments where ozone is generated, the influence of these environments may cause deterioration of the rubber materi- al. please consult us if you intend to use a switch in environments such as these. 10) do not store in places where organic gas might be generated or in places of high dust content or high humidity. 3. installation 1) tighten the three cover installation screws equally. tightening torque is 0.2 to 0.29 n m (2 to 3 kg cm). 2) avoid having extra cord length pushed into the cord vent. any extra length when wiring should be allowed to rest in its natural position. cautions wiring (unit: mm inch ) 1. insulation distance greater than 6.4 mm reinforced plastic with superior electrical insulation characteristics is used in the wiring and charging sections. despite its compactness, to maintain stable insula- tion performance, the insulation distance for each part is greater than 6.4 mm without using an insulation sheet. (complies with ul, csa, and vde.) 2. includes ground terminal 3. loose stop terminals used. washer spring ( 4 locations ) projection ( 8 locations ) groove ( 8 points ) screw terminal terminal n.c. use 16 n.o. use 32 .630 1.260 max. 10 max. 6.4 3.0 to 3.7 dia. .394 .118 to .146 max. 6.4 max. 6.4 3.0 to 3.7 dia. .118 to .146 3.0 to 3.7 dia. .118 to .146 .252 .252 .252 max. 10 .394 max. 14 max. 6.4 3.0 to 3.7 dia. .551 .118 to .146 max. 6.4 max. 14 .551 max. 10 .394 3.0 to 3.7 dia. .118 to .146 max. 6.4 3.0 to 3.7 dia. .118 to .146 .252 .252 .252 applicable fasten terminal grounding terminal with insulated grip fasten terminal applicable wire head block direction change (roller arm, adjustable roller arm, adjustable rod types) finished outside diameter conductor wire-strand round shape 6 dia. to 9 dia. flat shape max. 9.4 0.75mm 2 1.25mm 2 2.0mm 2 0.75mm 2 1.25mm 2 2-wire 3-wire 4-wire wire name vinyl cabtire cord (vctf) 0.75mm 2 2-wire vinyl cabtire cable (vct) 1.0 dia. to 1.2 dia. 1.6 dia. 2-wire 600v vinyl insulation sealed cable (vvf) applicable wire lock screw ( black ) actuator heads may be moved in 90 incre- ments to any of four directions, by removing one screw. types overtravel plunger (az8111, 8112, 8122) 1.5 to 2.0mm .059 to .079inch roller arm (az8104, 8107, 8108) 20 to 30 flexible rod (az8166, 8169) 15 to 20mm .591 to .787inch (at the top) vl (az8)
60 4. lamp holder 1) as shown in the photograph, wrench a minus-driver in the gap between the cover and the part of the indicator holder indicated by the arrow in the direction of insertion, and raise the lamp a little. 2) after removing the indicator holder, insert it in the reverse direction, and push it in until a snap is heard. 3) after changing the direction of the indicator holder, put the cover on it in such a way that the spring touches the top of the terminal screw. (unless the spring rests completely on the terminal screw, distortion of the spring, failure in lighting of the lamp or short circuit may result.) 5. spring type 1) when loads are connected to both n.o. and n.c. only the indicatin at non- operation time can be used. 2) take special care not to damage or deform the contact spring during change of indicator holder direction or during connection work. 3) in the case of vl limit switch with neon lamp, if the lamp is connected in series in a 100v circuit, the lamp ceases to be lighted. however, for a 200v circuit, up to 2 lamps can be connected in series. 6. lead type 1) when loads are connected to both n.o. and n.c. indication can be given on both n.o. and n.c. sides, but it is impos- sible to connect the indication circuit to the load in series and parallel. driver lamp holder cover spring vl (az8)
2 one-way roller lever roller lever hinge lever short long azh20 22 classification subminiature size compact size product name sl (az3) micro limit switches hl (azh) limit switches (die cast case) hl (azh) limit switches (die cast case) hl (azh) limit switches (plastic case) ml (az7) limit switches (standard) ml (az7) limit switches (epoxy-sealed terminal type) feature dust-proof type ip60 ip64 ip65 ip67 abrasion-proof type surge-proof type corrosion-proof type oil-resistant type neon led mechanical life (min.ope.) operating force (max.) (hinge lever type) available actuators terminals wiring mounting pitch (applicable screw) available standards page electrical ratings (load resistance) protective construction with lamps ?a limit switch with high-density mounting that improves stroke capacity through an o.t. absorption-type spring. ?led lamp type also available. rubber-cover type socket with cord type (with led lamps) [bifurcated type] 10a250v ac 10a125v ac 0.4a115v dc 10a250v ac 10a125v ac 0.4a115v dc 4a250v ac 4a125v ac 4a30v dc 0.1a 125v dc 10 7 10 7 10 7 10 7 10 7 10 7 10 5 0. 98n {100gf} 1. 96n {200gf} (short lever type) 2. 94n {300gf} ?rubber cover (solder and quick connect (#110) terminal) ?socket with cord cabtire code cross-angled wiring 28 14mm 1.102 .551inch (m4 screw) ul, csa p.13 p.18 p.18 p.18 p.33 p.33 ul, csa, t?v, ce ul, csa, t?v, ce ul, csa, t?v, ce ul, c-ul, t?v, ce 33mm 1.299inch (m4 screw) 33mm 1.299inch (m4 screw) 33mm 1.299inch (m4 screw) 25.4mm 1.000inch (m4 screw) 25.4mm 1.000inch (m4 screw) cabtire code cabtire code cabtire code cabtire cable cabtire cable screw terminal connector terminal screw terminal screw terminal vinyl cabtire cable (1m 3.281ft ) 2.45n {250gf} 3. 92n {400gf} 11.8n {1,200gf} (plunger type) 2.45n {250gf} 3.92n {400gf} 11.8n {1,200gf} (plunger type) 2.45n {250gf} 3. 92n {400gf} 1.47n {150gf}, 1.77n {180gf}, 1.96n {200gf}, 2.16n {220gf}, 2.35n {240gf}, 2.75n {280gf}, 5.88n {600gf} max. 1.47n {150gf}, 1.77n {180gf}, 1.96n {200gf}, 2.16n {220gf}, 2.35n {240gf}, 2.75n {280gf}, 5.88n {600gf} max. 5x10 5 5x10 5 5x10 5 2x10 5 2x10 5 [standard type] 5a125v ac 5a250v ac 5a8v dc 5a14v dc 5a30v dc 0.5a125v dc 0.25a250v dc [standard type] 5a125v ac 5a250v ac 5a8v dc 5a14v dc 5a30v dc 0.5a125v dc 0.25a250v dc [bifurcated type] 0.1a125v ac 0.1a8v dc 0.1a14v dc 0.1a30v dc [bifurcated type] 0.1a125v ac 0.1a8v dc 0.1a14v dc 0.1a30v dc without ledlamps 0.1a125v ac 0.1a8v dc 0.1a14v dc 0.1a30v dc with ledlamps 0.1a24v ac ?high sealability that satisfies iec ip67. ?wiring is screw-ter- minal type. ?bifurcated type also available. ?high sealability that satisfies iec ip67. ?less wiring, less installation connec- tor type. ?led lamp type also available. ?bifurcated type available. ?perfect for applica- tions that prioritize economy. ?switches installed with both economical and compact z-basic microswitches and limit switch protective construction. ?coil spring system provides long life. ?an ml compact limit switch with an epoxy-sealed case that completely encloses the terminal. appearance head code az3 azh23 azh10 12 az7 az7 selector chart note: excludes limit switch replacement parts actuators push plunger roller plunger cross-roller plunger roller arm adjustable roller arm adjustable rod fork spring wire flexible rod roller lever short long short long
3 ip60 ip64 ip65 ip67 neon led mechanical electrical classification product name feature life (min.ope.) operating force (max.) (hinge lever type) available actuators terminals wiring mounting pitch (applicable screw) available standards ratings (load resistance) protective construction with lamps appearance head code dust-proof type abrasion-proof type surge-proof type corrosion-proof type oil-resistant type page subminiature size vertical type compact size vertical type vertical type touch type ql (az4) micro limit switches dl (azd1) mini limit switches vl (az8) mini limit switches az5 limit switches vl-t mini touch limit switches input voltage 12-24v dc output current 150ma 6a250v ac 6a380v ac 5a24v dc 10 7 10 7 10 7 10 7 10 7 p.38 p.44 p.52 p.61 p.68 ul, csa ul, c-ul, t ? v, ce ul, c-ul, t ? v, ce ul 14 28mm .551 1.102inch (m4 screws) 22 (47mm) .866 1.850inch (m4 screws) 21 56mm .827 2.205inch (m4 screws) 30.2 58.7mm 1.189 2.311inch (m5 screws) cabtire code cabtire code cabtire cord cap tire cable cabtire cable (wiring type) cabtire cord cabtire cable 21 56mm 827 2.205inch (m4 screws) l socket (solderand quick connect (#110) terminal) socket with code screw terminal (conduit connec- tors: pf: 1/2, pg: 13.5 types) screw terminal screw terminal screw terminal 6.86n {700gf} (plunger type) 1.11n {113gf}, 4.41n {450gf} (arm type) 6.37n {650gf} 4.90n {500gf} 3.29n {400gf} 0.88n {90gf}, 5.88n {600gf}, 8. 83n {900gf}, 19.16n {2,000gf} 1.39n {142gf} 26.67n {2,720gf} 3x10 5 1.5x10 5 3x10 5 5x10 5 5a250v ac [standard type] 5a250v ac 5a125v ac 0.4a125v dc [with lamp type] [neon lamp type] 5a 240v ac 5a 125v ac [led lamp type] 3a 24v dc [standard type] 10a125v ac 6a250v ac 2a500v ac 0.8a125v dc [with lamp type] [neon lamp type] 10a 125v ac 6a 240v ac [led lamp type] 6a 24v dc l socket type socket with cord type a subminiature, highly accu- rate limit switch with built-in environment-proof functions. cord extraction can be changed in four directions, due to the dedicated l socket. led lamp can also be attached. excellent safety even if the contact point is welded, due to the forced contact opening mechanism. block mount system makes parts replacement easy. conforms to din stan- dards. in addition to the characteristics of stand mounted limit switches, is com- pact, easily instal- lable, highly reli- able, lightweight, and economical. built-in dedicated circuit breaker (1 form a 1 form b). different types of actuator avail- able. operate just by touching lightly. comes with sen- sitivity adjustment function and indi- cates operations. vl type touch limit switch az4 azd1 az8 az5 az84 door switch compact magnelimit magnelimit 1) 2) 5a (2a) 125v ac 5a (2a) 250v ac 5a (2a) 30vdc 5a 125v ac 5a 250v ac 5a 30vdc 10 5 10 5 p.72 p.74 ul, c-ul ul, c-ul, ce cabtire cord cabtire cord 30mm 1.181inch (m3) 52mm 2.047inch (m4) tab #110 terminal lead wire screw terminal 3.43n {350gf} 5x10 4 5x10 4 secured by magnet built-in switch detection dual-role switch in one unit. safe design prevents operator making errors. secured by magnet built-in switch detection dual-role switch in one unit. construction possi- ble with 100v ac power. azc3 azc1 free attachment other listed products product name ps hall sensors appearance an9 detector distance 2.5mm .098inch feature page magnetic detector type subminiature sensor perfect for slide table limiting economical price with operating display lamp attached. p.76 notes: 1) excludes exposed part of terminals, externally mounted components, and magnet catches. 2) figures in parentheses ( ) indicate rated current of water-resistant type.
4 type classification push plunger type small medium large excellent excellent high-level accuracy gives firm detection for position fixing, etc., by using perpendicular movement. roller plunger type (includes cross roller plunger) small medium large excellent excellent operating range can be widened by mounting accessory actuators like cams, dogs, cylinders, etc. high-level detection for position fixing. roller arm type small to large large medium good to excellent excellent the stroke in the direction of revolution is large at between 45 and 90 and the lever angle can be set at will to within 360 for easy use. wide angle type (large o.t.) available. can be used for wide-range position fixing. adjustable roller arm type small to large large medium good to excellent good lever length can be altered to allow rough operation detection using the roller lever characteristics. adjustable rod type large large medium good good wide range of operations, and convenient for uneven mountings. lightest operation among the revolving operation type of limit switches. rod length is adjustable, and bending is also easy. fork large medium medium good excellent if operated up to 55 position, revolves automatically to retain 90 position. two dog operation enables recovery operation through single dog, or for any- thing that has caused the roller position to slip. spring wire and flexible rod medium large small possible possible excluding the thread direction, direction can be adjusted up to 360? operating power is the lowest of the limit switches, and is effective in detecting when direction and conditions are uneven. in order to absorb the movements after operation in the actu- ator part, work slippage tolerances are also large. hinge lever type large medium small possible possible using a low speed, low torque cam, the lever can assume various shapes suited to the operation. the lever is very sturdy. roller lever type large medium small possible possible suited to high speed cams through the attachment of a hinge roller lever. one way roller lever type medium medium medium possible possible operation is possible with both hinge lever type and one way operation, but the roller will break if operat- ed in the opposite direction, rendering the unit inop- erable. can be used to prevent opposite direction movement. roller lever type medium medium medium possible possible the roller position can be changed. pretravel (p.t.) overtravel (o.t.) operating force (o.f.) accuracy vibration shock characteristics a ctuator selection
5 standard glossary fixed rating values the values that guarantee the stan- dards for the limit switch characteris- tics and functions. for example, the rated current and rated voltage, which are preset conditions (load type, current, voltage, frequency, etc.) operating object the mechanism and mountings that operate the limit switch actuator. used for mechanical operators such as cams and dogs. detective object the unit other than mechanical mountings that operate the limit switch. products, parts, jigs, etc. reaction spring (movable spring) the mechanical part that switches the limit switch contact is called either the reaction spring or the moveable spring. contact when the counter-spring revolves, power is switched on and off through the contact between metal parts contact gap the effective clearance between the fixed contact and the moveable con- tact. also called breaking distance. contact arrangement the construction of the electrical input/output circuit depending on use. for example, the following two applications: contact type used in opposition to a semiconduc- tor switch that has switching charac- teristics. fulfills switch functions through a mechanical on/off con- tact. terminal mold after wiring, the connecting part is molding by epoxy resin for water- proof, oil-resistant and dust-proof capabilities. construction actuator this part directly detects movement of the dog, cam, and so forth in the operating unit, and transmits external force to the changeover mechanism, thereby engaging the moveable con- tact and operating the switch. headblock an independent part of the actuator mechanism of the limit switch. wiring vent (cord vent) the seal on the wiring at the mouth of the wiring vent. also called the conduit vent for the screw hole used in the wiring. terminals the part of the wiring work in the wiring that forms the circuit for elec- trical input and output. operating char- a cteristics operating force (o.f.) the force required to cause contact snap-action. it is expressed in terms of force applied to the actuator. release force (r.f.) the force to be applied to the actua- tor, at the moment contact snaps back from the operated position to unoperated position. pretravel (p.t.) distance of the actuator movement from free position to operating posi- tion. overtravel (o.t.) the distance which the actuator is permitted to travel after actuation without any damage to the switching mechanism. total travel (t.t.) the distance which the actuator is permitted to travel from free position without any damage to the switching mechanism. movement differential (m.d.) the distance from operating to release position of the actuator. operating position (o.p.) the position of the actuator when the traveling contact snaps to the fixed contact. release position (r.p.) the position of the actuator when the traveling contact snaps back from the operating position to its original position. free position (f.p.) position of the actuator when no force is applied to it. technical information [1 form c ( single pole double throw ) ] f [1 form z ( double break double make ) ] com f n.o. n.c. n.c. n.c. n.o. n.o. cord vent front view reset spring pushbutton roller cam reset spring plunger roller arm head block pushbutton cam roller actuator vl limit switch r.t. o.f. f.p. o.t.t.f. m.d. standard position o.p. p.t. r.p. t.t. r.p. o.t. m.d. o. p. operating position r.p. r.f. o. p. operating position p.t. p.t. free position o.t. m.d. note: f.p. , o.p. , and r.p. are expressed as distances from the standard position.
6 en60947-5-1 en standard same as iec947-5-1 utilization categories the following examples express the classification of switches by category of use. rated impulse withstand voltage (uimp) the peak impulse current value which enables the switch to resist without insulation breakdown. rated enclosed thermal current (ithe) the current value that enables cur- rent to flow without exceeding the specified maximum temperature in the recharging contact switch. if the pins are made of brass, the maxi- mum temperature limit is 65? 149? . conditional short circuit current the current the switch can resist until the short circuit protection device is activated. short circuit protection device a device that protects the switch from short circuits through a circuit break (breakers, fuses, etc.) switching overvoltage the surge momentarily generated when a circuit is closed. must be lower than the uimp value. pollution degree expresses in levels the environment in which the switch is used. the four levels are shown below. limit switches come under contami- nation level 3. glossary relating to the en60947-5-1 rated operational voltage (ue) the maximum rated voltage for switch operation. this must never exceed the maximum ratings insula- tion voltage (ui). rated operational current (ie) the maximum rated current for switch operation. rated insulation voltage (ui) the maximum rated current value which guards the switch? insulation functions, forming the parameters for the resistance values and the mount- ing distance. current type category contents ac ac-15 controls electromagnetic loads in excess of 72va (volt amperes.) dc dc-12 controls resistance loads and semiconductor loads. pollution degree contents 1 no contamination or, even if conta- mination is present, only non-con- ducting contamination is generated. 2 normally, only non-conducting cont- amination is generated, but there remains the possibility of temporary conducting contamination when the circuit is formed. 3 conducting contamination is gener- ated, or else dry non-conducting contamination is generated by cir- cuits which can be anticipated. 4 permanent conducting contamina- tion is generated by dust, rain, snow, and other conductors. technical information
7 protection against spray no damage incurred when sprayed with a jet of water for 3 minutes from all directions, as per the diagram on the left. protection level and test methods protection level level protection level and test methods protection level level protective construction expresses the degree of protective construction that guards the level of functionability of the switch against ingress of solid objects, water, and oil. the standards are iec529 (iec: international electrotechnical commission) standards. iec standards determine the level of protection against both water and solid objects, but not against oil. protection against both water and solid objects protective construction 0 no particular protection 4 protection against solid objects exceeding 1mm .039inch in size. a hard wire 1mm dia. .039 inch dia. across cannot penetrate the inside. 5 protection against dust the unit is left for 8 hours in an atmosphere in which 2kg of talcum powder per 1m 3 is floating. no damage incurred from talcum powder penetrating the inside. 6 dust-proof protection againt dust (dust does not penetrate) the unit is left for 8 hours in an atmosphere in which 2kg of talcum powder per 1m 3 is floating. the talcum powder does not penetrate the inside. 3 rain-proof protection against rain fall no damage incurred when sprayed with water continuously for 10 minutes at angles of up to 60 from the perpendicular. 4 foam-proof protection against flying foam no damage incurred when sprayed with water continuously for 10 minutes at angles of up to 180 from the perpendicular across a wide area. 5 spray-proof 6 water proof protection against waves water does not invade the interior when sprayed with a jet of water for 3 minutes from all directions, as per the diagram on the left. 7 corrosion- proof protection against corrosion while immersed in water water does not invade the interior during immersion for 30 minutes at a depth of 1m 3.281ft. . protection against water protection against solid objects ip- note: 1. all of the tests cited above were conducted with the cord vent (conduit vent) tightly shut. 2. the above protective constructions are based on iec standard but major differences may arise due to length of use and operat ing environment. this should be thoroughly discussed and verified. 3. when the corrosion-proof model is immersed in water for 30 minutes or more, verify that no water has penetrated the inside b efore use. 3m 9.843ft. nozzle radius 6.3mm .248inch water pressure 30kp 3m 9.843ft. nozzle radius 12.5mm .492inch water pressure 100kp 1m 3.281ft. 1.0 .039 dia.
8 vmax (m/s) cautions for use pay attention to the following points when designing the dog for limit switch operation. 1. make the dog faceplate as smooth as possible. 2. adjust both the dog angle and the set arm angle as below, depending on the operating speed. 3. the depth (h) of the dog effects the lifespan of the limit switch. therefore, set the depth to a maximum of 80% of the total travel (t.t.) 4. the relationship between the speed of the dog (v = m/s) and the tip angle ( ) is as follows: 1) v & 0.2m/s 3) 0.5m/s ! v & 2m/s because the arm jiggle is as a mini- mum at a comparative speed such as v & 0.5m/s, setting both the dog angle so that it travels perpendicularly and the arm angle to 45 is optimum. if overriding the dog, set the arm per- pendicularly, so that =45? if the dog angle is reduced, the tolerable speed is increased. 5) roller plunger type design of operating dog and operating speed when v & 0.2m/s, set the arm to per- pendicular and set the arm rise angle to between 45 and 90? if the dog rise angle is reduced, the maximum tolera- ble speed is increased. as a rule, = 45 is optimum. 2) v & 0.5m/s the maximum tolerable speed can be extended by further reducing the dog rise angle from 45 when 0.5m/s ! v & 2m/s. it is necessary to set the arm so that the dog? cutting surfaces are always parallel ( o = 90 ) 4) overriding the dog (v & 0.2m/s) h v = 45 to 90 f o h v f h v = 45 o = 45 h h 45 0.2 60 0.1 60 to 90 0.05 vmax (m/s) even if overriding the dog, set the for- wards and rearwards motion exactly the same, and avoid any settings that make the actuator accelerate rapidly from the dog. 5. operation speed 1) when the operation (acting and reverting) speed is exceedingly slow, switching of the contacts will become unstable and this could cause prob- lems such as failure to make contact and welding. as a guide, the speed should be at least 1mm/s. 2) when the operation (acting and reverting) speed is exceedingly fast, be careful because the violent motion could cause breakage and with increased frequency, contact switching will not be able to keep up. as a guide, the switching frequency should be within 20 times per minute. 20 0.5 30 0.25 h (0.5 to 0.7) t.t. (0.6 to 0.8) t.t. vmax (m/s) 45 0.2 60 0.1 60 to 90 0.05 vmax (m/s) 40 0.7 35 0.9 30 1.3 25 2.0
9 1. the on/off circuit for the guidance load may suffer contact damage due to surges or inrushes when the power is turned either on or off. consequently, insertion of a protective circuit as per the following diagram is recommended, in order to protect the contacts. 2. do not connect either irregular poles or power sources to a switch contact. power connection examples (irregular pole connection) 3. avoid circuits where power may find a way between the contact points (as this may cause welding.) protection circuit circuit cautions for use (1) r must be a minimum of 10 ? ; (2) when using ac power: q impossible when r impedance is large. w possible when c, r impedance is suffi- ciently small com- pared with r imped- ance. can be used with both ac and dc as appro- priate. r ~ r c: 0.1 f limit switch contact limit switch contact (1) dedicated dc use. (2) ac is impossible limit switch contact can be used with both ac and dc as appro- priate. limit switch contact c r r c r r diode r varistor znr r example of unsuitable power connec- tion (abnormal power connection) no good load l load load connected to same pole good load l load load l ac dc risk of ac and dc being mixed. no good load l 4. using electronic switch circuits (low power, low current) 1) bouncing and chattering are gener- ated due to collision between the con- tacts when the limit switch is switching between them, and this sometimes causes such problems as white noises and error pulses in both the electronic circuit and the reverberation equip- ment. 2) if the generation of bouncing and chattering becomes a problem, it is necessary to consider installing a cr circuit or other absorption circuit given the circuit design. 3) this is particularly necessary when high contact reliability is needed, and is unsuitable for silver contact switch- es. switches with gold contacts pos- sess excellent performance. l 100v 200v no good ~ ~ cautions for use
cautions for use 10 1) do not attempt to physically alter any part of the switch itself, such as the actuator, or switch attachment vent, as this may cause alterations to both characteristics and performance, and damage the insulation. 2) do not pour any lubricants such as oil or grease onto the moving parts of the actuator, as there is a possibility that this will cause a malfunction due to seepage into the inside, and impair the motion. silicon-based grease in particular affects the contact points badly. 3) if the switches are not to be used for an extended period of time, their con- tact reliability may be reduced due to oxidation of the contact points. because accidents may result from the impaired conductivity, always imple- ment a check beforehand. 4) prolonged continuous use of the switch hastens deterioration of the parts (especially the seal rubber) and may cause a malfunction in the release. for this reason, always imple- ment a check beforehand. 5) usage in the vicinity of either the switch operating position (o.p.) or the release position (r.p.) results in unsta- ble contacts. if using the nc contact point, set the actuator to return to the free position (f.p.) also, is using the no contact point, hold the ratings val- ues down to 70 to 100% for the over- travel (o.t.) 6) if the actuator is forced beyond its total travel (t.t.), the internal mecha- nism may be damaged. always use within the t.t. 7) do not apply unreasonable force to the actuator, as this may result in dam- age and impaired movement. 8) the switch, if dropped, may break due to excessive vibration and impact. therefore, please use extra caution when transporting and installing. 9) condensation inside the switch may occur if there are rapid ambient tem- perature changes when the switch is in a high temperature and humidity. since this occurs easily during marine transport, be extra cautious of what the environment will be when shipping. condensation is the phenomenon in which water vapor condenses into switch-adhering water droplets when the temperature rapidly drops in a high-temperature, high-humidity atmosphere or when the switch is quickly moved from a low temperature location to a place of high temperature and high humidity. it is the cause of insulation deterioration and of rust. 10) be careful of freezing in tempera- tures below 0?. freezing is the phe- nomenon in which moisture adhering to the switch from condensation or when in unusually high-humidity envi- ronments freezes onto the switch when the temperature drops below the freezing point. please extra caution because freezing can lock moving parts, cause operational delays, or interfere with conductivity when there is ice between the contacts. 11) in low-temperature, low-humidity conditions, plastic becomes brittle and the rubber and grease harden, which may lead to malfunction. 12) long term storage (including dur- ing transport) in high temperature or high humidity environments or where the atmosphere contains organic or sulfide gas, will cause sulfide or oxide membrane to form on the contact sur- faces. this in turn will cause unstable or failed contacting that may lead to functional malfunction. please verify the atmosphere when storing and transporting. 13) packaging should be designed to reduce as much as possible the poten- tial influence of humidity, organic gas, and sulfide gas, etc. 14) please avoid sudden changes in temperature. this is a cause of switch deformation and encourages the seal structure to breathe, which may lead to seal failure and operational malfunc- tion. 15) if installing a thermoplastic resin case, the use of a spring washer tight- ened directly against the case will cause the case to collapse and become damaged. therefore, please add a flat washer before tightening. also, be careful not to install if the case is being twisted. 16) for the purpose of improving quali- ty, materials and internal structure may be changed without notice. 17) when used outdoors (in places where there is exposure to direct sun- light or rain such as in multistory car parks) or in ambient temperature envi- ronments where ozone is generated, the influence of these environments may cause deterioration of the rubber material. please consult us if you intend to use a switch in such environ- ments. cautions for use precautions relating to the installation environment avoid using in silicon environments such as organic silicon-based rubber, solvents, sealants, oil, grease, or wiring.
11 explanation improved design poor design r improvement examples @ problem ?dog adjustment is difficult. solution ?separate each one until the dog can be adjusted. @ problem ?the dog axis is too long, and slips out during operation. ?for this reason, the limit switch operating position slips. solution ?firmly fix the dog plate to the base. r @ problem ?the detector sinks, applying force to the limit switch. ?the limit switch o.t. cannot be set. solution ?relieve the pressure using an additional actuator, and the o.t. can also be set. r @ problem ?the area around the actuator coil is easily damaged. ?friction generated during opera- tion. solution ?relieve the friction by installing an additional actuator. ?change the type of limit switch. r @ problem ?workers keep bumping the actua- tor. solution ?fit a protective cover to the side of the limit switch. r @ problem ?because the cord vent for the limit switch faces upwards, water droplets and so forth can easily penetrate the interior. ?the cord is constantly moving and thus easily damaged. solution ?fix the limit switch position on the stationary board. ?fit a protective cover, so that water and oil cannot come into direct con- tact with the limit switch. r @ problem ?the cord is not fixed, and gets pulled during work. ?dog adjustment is ineffective. solution ?change the limit switch position, and fix the cord. ?attach an adjustment mechanism to the dog. r @ problem ?the limit switch is near a high-tem- perature area. ?dog adjustment is ineffective, and the dog keeps bumping the lever. solution ?move the limit switch further away. ?make dog adjustment possible, and change the shape of the unit. r dog axle conveyer printer detector conveyer detector rotation axle rotation axle limit protective cover high temperature high temperature
12 explanation improved design poor design r @ problem ?the detector is scratched. limit attachment adjustments are difficult ?the actuator is damaged. ?specimen transfer is impeded. solution ?fix the limit position to behind the dumper to solve the above prob- lems. @ problem ?the transfer path of the detector is not fixed, and it keeps bumping the actuator. ?the operating position is unstable. ?the actuator is damaged. solution ?stabilize the operating position by fitting an additional actuator. ? make limit switch adjustment possible. r @ problem ?stroke adjustment ineffective. ?release the limit switch position, and ensure that the dog does not bump the lever. solution ?make dog adjustment possible. ?change the limit switch position, and sure that the dog does not bump the lever. r @ problem ?the cam shape is unsuitable (especially during release and strike release.) ?direction of limit switch attachment is unsuitable. solution ?render the cam shape smooth. ?change the limit switch position. r conveyer detector dumper conveyer detector conveyer detector rotation axle dog improvement examples
table of recommended substitute products for discontinued products 77 ml (az7) limit switches ml (az7) limit switches ml (az7) limit switches ml (az7) limit switches az2 series limit switches slitted type limit switches (az6) new slitted type limit switches (az66) az1 series limit switches page recommended substitute products products to be discontinued p.33 p.33 p.33 p.33 you cannot use this nut for panel installation. products to be discontinued recommended substitute products installation please note that installation method and operation characteristics are different. az1 ??? az7 ??? az7 ??? az7 ??? az7 ??? az2 ??? az6 ??? az66 ??? please note that installation method and operation characteristics are different. please note that installation method and operation characteristics are different. please note that installation method and operation characteristics are different.
78 foreign standards overview 1. international standards iec standard international electrotechnical commission by promoting international cooperation toward all problems and related issues regarding standardization in the electrical and electronic technology ?lds, the iec, a non-governmental organization, was started in october, 1908, for the purpose of realizing mutual understanding on an international level. to this end, the iec standard was enacted for the purpose of promoting international standardization. 2. north america ul (underwiters laboratories inc.) this is a non-pro? testing organization formed in 1894 by a coalition of u.s. ?e insurance ?ms, which tests and approves industrial products (?ished products). when electrical products are marketed in the u.s., ul approval is mandated in many states, by state law and city ordinances. in order to obtain ul approval, the principal parts contained in industrial products must also be ul- approved parts. ul approval is divided into two general types. one is called ?isting (fig. 1), and applies to industrial products (?ished products). under this type of approval, products must be approved unconditionally. the other type is called ?ecognition (fig. 2), and is a conditional approval which applies to parts and materials. csa (canadian standards association) this was established in 1919 as a non-pro?, non- governmental organization aimed at promoting standards. it sets standards for industrial products, parts, and materials, and has the authority to judge electrical products to determine whether they conform to those standards. the csa is the ultimate authority in the eyes of both the government and the people in terms of credibility and respect. almost all states and provinces in canada require csa approval by law, in order to sell electrical products. as a result, electrical products exported from japan to canada are not approved under canadian laws unless they have received csa approval and display the csa mark. approval is called ?erti?ation? and products and parts which have been approved are called ?erti?d equipment? and display the mark shown in fig. 3. the mark shown in fig. 4 is called the ?omponent acceptance mark, and indicates conditional approval which is applicable to parts. the c-ul mark shown in fig. 5 (?ished products) and fig. 6 (parts) indicates that the product has been tested and approved in ul laboratories, based on ul and csa standards, through mutual approval activities. 3. europe en standard european standards/norme europeennee (france)/europaishe norm (germany) abbreviation for european standards. a uni?d standard enacted by cen/cenelec (european standards committee/european electrical standards committee). eu and efta member nations employ the content of the en standards into their own national standards and are obligated to abolish those national standards that do not agree with the en standards. (1) germany vde (verband deutscher elektrotechniker) the vde laboratory was established mainly by the german electric technology alliance, which was formed in 1893. it carries out safety experiments and passes approval for electrical devices and parts. although vde certi?ation is not enforced under german law, punishment is severe should electrical shock or ?e occur; therefore, it is, in fact, like an enforcement. t?v (technischer ?berwachungs-verein) t?v is a civilian, non-pro?, independent organization that has its roots in the german boiler surveillance association, which was started in 1875 for the purpose of preventing boiler accidents. a major characteristic of t?v is that it exists as a combination of 14 independent organizations (t?v rheinland, t?v bayern, etc.) throughout germany. t?v carries out inspection on a wide variety of industrial devices and equipment, and has been entrusted to handle electrical products, as well, by the government. t?v inspection and certi?ation is based mainly on the vde standard. t?v certi?ation can be obtained from any of the 14 t?vs throughout germany and has the same effectiveness as obtaining vde certi?ation. listing mark fig. 1 recognition mark fig. 2 certification fig. 3 fig. 5 fig. 6 component acceptance fig. 4 vde t?v rheinland
79 limit switches product name sl limit switches ul recognized file no. approved ratings file no. approved ratings file no. approved ratings e122222 4a 250v ac lr55880 4a 250v ac hl limit switches ml limit switches dies-cast case standard load type e122222 e122222 5a 250v ac pilot duty b300 lr55880 e122222 (c-ul) 5a 250v ac pilot duty b300 j9650514 j9650515 j9551204 dc-12 1a 30v- die-cast case low level load type (includes connector type) 0.1a 30v dc 0.1a 30v dc dc-12 0.1a 30v- plastic case standard load type 5a 250v ac pilot duty b300 5a 250v ac pilot duty b300 ac-15 2a 250v~ dc-12 1a 30v- plastic case low level load type 0.1a 30v dc 0.1a 30v dc dc-12 0.1a 30v- standard type 10a 250v ac 10a 250v ac ac-15 2a 250v~ epoxy-sealed terminal type with lamp ql limit switches e122222 lr55880 5a 250v ac 5a 250v ac vl limit switches standard type e122222 e122222 (c-ul) j9551203 5a 250v ac pilot duty b300 5a 250v ac pilot duty b300 e122222 e122222 (c-ul) 6a 380v ac pilot duty a300 6a 380v ac pilot duty a300 ac-15 2a 250v~ with neon lamp dl limit switches j9551205 ac-15 2a 250v~ e99838 e43149 e43149 (c-ul) e43149 (c-ul) 10a 1/2hp 125v ac 6a 1/2hp 250v ac 5a 250v ac 2a 250v ac 5a 250v ac 2a 250v ac vertical limit switches compact magnelimit standard type water-resistant type e122222 e122222 (c-ul) 5a 250v ac pilot duty b300 5a 250v ac pilot duty b300 magnelimit csa certified t?v approval safety standards recognition limit switches conforming to en/iec standards the limit switches shown below conform to both en and iec standards, and may dis- play the ce markings. file no. approving body suitable standard product name j9650514/j9650515 t?v en60947-5-1 hl j9551204 t?v en60947-5-1 ml j9551203 t?v en60947-5-1 vl j9551205 t?v en60947-5-1 dl en60947-5-1 magnelimit product classification limit switches note: refer to the page for each individual product for detailed approval conditions and approved types. moreover, the hl limit switch alone does not display the ce mark as standard. if the ce mark is necessary, add (ce) to the end of the part no. when ordering. what are en standards? an abbreviation of norme europeenne (in french), and called european standards in english. approval is by vote among the cen/cenelec member countries, and is a unified standards lim- ited to eu member countries, but the contents conform to the international iso/iec standards. if the relevant en standard does not exist, it is necessary to obtain approval based on the relevant iec standard or, if the relevant iec standard does not exist, the relevant standard from each country, such as vde, bs, semko, and so forth. ce markings and ec directives the world? largest single market, the european community (ec) was born on 1 january 1993 (changing its name to eu in november 1993. it is now always expressed as eu, apart from ec direc- tives.) eu member country products have always had their quality and safety guaranteed according to the individual standards of each member country. however, the standards of each country being different prevented the free flow of goods within the eu. for this reason, in order to eliminate non-tariff barriers due to these standards, and to maximize the merits of eu unification, the ec direc- tives were issued concomitant to the birth of the eu. the en standards were established as universal eu standards in order to facili- tate eu directives. these standards were merged with the international iec standards and henceforth reflect the standards in all countries. also, the ce markings show that products conform to ec directives, and guarantee the free flow of products within the ec. appropriate ec directives for control equipment products the main ec directives that are to do with machinery and electrical equipment are the machinery directive, the emc directive, the low voltage directive, and the telecom directive. although these directives have already been issued, the date of their enactment is different for each one. the machinery directive was 1 january 1995. the emc directive was 1 january 1996, and the low voltage direc- tive was enacted from 1 january 1997. the telecom directive was established by the separate ctr (common technology references.) ce markings overview

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