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In­duc­ti­ve Tech­no­lo­gy in Mi­nia­tu­re For­mat

Com­pact mi­nia­tu­re de­si­gns are an in­te­gral part of wenglorØs in­duc­ti­ve pro­duct fa­mi­ly – with both stan­dard and in­crea­sed swit­ching di­stan­ces. In­duc­ti­ve sen­sors with in­crea­sed swit­ching di­stan­ces im­press users with long ran­ges that ena­ble pre­ci­se so­lu­tions for ap­pli­ca­tions with large me­cha­ni­cal play. The new ge­ne­ra­tion in com­pact D3 hou­sing or M4 th­read for­mat – in stain­less steel and with ro­bu­st PUR cable with a length of 2 m or as a pig­tail va­riant – al­lo­ws in­stal­la­tion in sy­stems with very li­mi­ted space. Thanks to the PNP and NPN va­rian­ts, the sen­sors can be ea­si­ly in­te­gra­ted into exi­sting sy­stems. The bright LED di­splay ser­ves as a prac­ti­cal ad­just­ment aid and in­di­ca­tes chan­ges in the swit­ching di­stan­ce to an un­sa­fe wor­king di­stan­ce du­ring ope­ra­tion by fla­shing.

Ad­van­ta­ges

Small For­mat, High Per­for­man­ce

  • In­crea­sed swit­ching di­stan­ces of up to 1 mm for sim­pli­fied and fast in­stal­la­tion 
  • Stain­less steel V2A and PUR cable for long life in harsh am­bient con­di­tions
  • High level of pro­tec­tion again­st da­ma­ge due to grea­ter di­stan­ce to the ob­ject
  • De­gree of pro­tec­tion IP67 in the large tem­pe­ra­tu­re range –25 to +70 °C

In­te­gra­tion in Per­fec­tion

  • Flush moun­ting for high me­cha­ni­cal pro­tec­tion
  • PNP/NPN and NO/NC va­rian­ts for op­ti­mal in­te­gra­tion
  • High swit­ching fre­quen­cy of 3,000 Hz for fast ap­pli­ca­tions
  • Bright LED for easy in­stal­la­tion and early main­te­nan­ce

Ap­pli­ca­tion Va­rie­ty

Pre­sen­ce Check of Nail Pins in Pal­let Nail Ma­chi­nes

In the pro­duc­tion of woo­den pal­le­ts, au­to­ma­tic nai­ling ma­chi­nes are used to join the in­di­vi­dual woo­den parts. The nail pins are first fed into ma­ga­zi­nes and then fired into the wood with com­pres­sed air. A mi­nia­tu­re in­duc­ti­ve sen­sor is used to check whe­ther there is a metal pin in the di­spen­ser unit and whe­ther there is a suf­fi­cient sup­ply for the next shot. If the nail is pre­sent, it is fired into the wood. If it is not pre­sent, the sen­sor swit­ches off, the ma­chi­ne de­ce­le­ra­tes and is­sues a si­gnal for ma­nual in­ter­ven­tion. 

End Po­si­tion De­tec­tion of a Grip­per in a Crim­ping Ma­chi­ne

In the elec­tri­cal in­du­stry, wires and ca­bles are strip­ped fully au­to­ma­ti­cal­ly, pres­sed with an end piece and cut to the cor­rect length. A mi­nia­tu­re in­duc­ti­ve sen­sor is used to first check whe­ther the cable is pre­sent or not. Then ano­ther sen­sor checks whe­ther the grip­ping tool for hol­ding the cable is open or not. If it is clo­sed, the cable is fit­ted with an end slee­ve; if it opens and rea­ches the end po­si­tion, the sen­sor sends the si­gnal for the cable to con­ti­nue along the pro­duc­tion line. If the end po­si­tion is rea­ched in the next work step, the wire is pres­sed.

Po­si­tion Sen­sing of the Grip­per Jaws of a Robot Grip­per

In the au­to­mo­ti­ve in­du­stry, parts are grip­ped and moved by ro­bo­ts at high speed. The ro­bo­ts’ grip­pers have lit­tle space, which is why mi­nia­tu­re in­duc­ti­ve sen­sors are in­te­gra­ted. These de­tect whe­ther the grip­pers are open or clo­sed, en­su­ring that parts can be cor­rec­tly grip­ped and moved. The in­crea­sed swit­ching di­stan­ce of the sen­sor (1 mm) sim­pli­fies ad­just­ment and ena­bles flush moun­ting, so that the grip­per and sen­sor re­main pro­tec­ted from da­ma­ge. 

Con­veyor Speed Con­trol of a Drive Shaft

In the pac­ka­ging in­du­stry, pre-​packaged pro­duc­ts are trans­por­ted via chain con­veyor sy­stems. The drive force is tran­smit­ted from a shaft to a chain via a pi­nion. A mi­nia­tu­re in­duc­ti­ve sen­sor checks the ro­ta­tion speed in close range and in con­fi­ned spa­ces th­rou­gh ali­gn­ment with two holes in the chain wheel and fine ad­just­ment. The holes are de­tec­ted and a swit­ching si­gnal is out­put to the con­trol unit. The si­gnal is used to check the speed of the chain con­veyor and en­su­re con­stant for­ward drive. 

Pro­duct Over­view

For­mat Out­put
I03H001 Ø 3 mm PNP NO
I03H002 Ø 3 mm PNP NC
I03H003 Ø 3 mm NPN NO
I03H004 Ø 3 mm NPN NC
I03H005 Ø 3 mm PNP NO
I03H006 Ø 3 mm PNP NC
I03H007 Ø 3 mm NPN NO
I03H008 Ø 3 mm NPN NC
I04H001 M4 PNP NO
I04H002 M4 PNP NC
I04H003 M4 NPN NO
I04H004 M4 NPN NC
I04H005 M4 PNP NO
I04H006 M4 PNP NC
I04H007 M4 NPN NO
I04H008 M4 NPN NC

Pre­ci­sion with In­duc­tion

In­duc­ti­ve sen­sors are un­bea­ta­ble part­ners in the con­tac­tless de­tec­tion of me­tal­lic ob­jec­ts by elec­tro­ma­gne­tic in­duc­tion. Thanks to a wide range of de­si­gns and func­tio­nal prin­ci­ples, va­rious hou­sing ma­te­rials and high swit­ching di­stan­ces of up to 50 mm, wen­glor’s in­duc­ti­ve sen­sors can quic­kly and op­ti­mal­ly solve a wide range of ap­pli­ca­tions – even in harsh or hy­gie­nic in­du­strial en­vi­ron­men­ts. The sen­sors are wear-​free, wa­ter­proof and re­si­stant to dirt and vi­bra­tions.
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