TACHO-ENCODER – OPTOTACHO – STANDARD RANGE Range - 90mm / 200mm An engine, either thermical or electrical, is defined per its nominal rotation speed, most of the time RPM are used. Measuring this speed allows to optimize the engine speed rate: underspeed measure, overload detection or overspeed (race detection or transmission break, for example), reduction of the noise level, overheating, etc… On of the first speed rotary sensor in the industrial field was the tachogenerator – an electric motor used like a generator. The delivered analogue signal is proportional to the rotation speed. These devices have some disadvantages : the necessity to do regular maintenance of the brush - collector combination, the spark risk which is coming from this combination bans the use of tacho generator in explosive atmosphere and finally, the delivered voltage is wavy, this limits the precision of the system BEI IDEACOD proposes solutions without any contacts based on the incremental encoder technology. The analogue signal is get with the transformation of the signal frequency into proportional voltage or current. The pulses which comes from the optical reading insures a total immunity to perturbations and allows a use on the hardest applications. Moreover the opto-electronic reading principle insures an exceptional life time without any maintenance OPTO-TACHO Shaft Electronic Speed Connection 11: 11mm 12: 12mm 14: 14mm 30: 30mm Power supply: 2:5Vdc 3: 15 to 30Vdc Output: V1: 0...20 mA V2: 4...20 mA V3: -20mA ...+20mA Vm: 0...10Vdc Vp: -10V...+10Vdc Example : D10: 10 rpm C20: 200 rpm M30: 3000 rpm V6R: radial 12 pins CW M23 connector V3R020: radial 2m PUR cable VBR: terminal box, radial cable gland output 90mm NHM9 Solid : 11 12 3V1, 3V2, 3V3, 3Vm, 3Vp 2V1, 2V2, 2V3, 2Vm, 2Vp M60 max. V6R V3R020 VBR 90mm NHU9 Through : 30 3V1, 3V2, 3V3, 3Vm, 3Vp 2V1, 2V2, 2V3, 2Vm, 2Vp M36 max. V6R V3R020 200mm NHML Solid : 14 3V1, 3V2, 3V3, 3Vm, 3Vp 2V1, 2V2, 2V3, 2Vm, 2Vp M36 max. V3R V6R Reference example NHM9_ 11 // 3V2 // M36 // VBR TACHO-ENCODER Shaft Electronic Out Pulses Speed Connection 11: 11mm 12: 12mm 14: 14mm 30: 30mm Supply: 2: 5Vdc 3: 15-30Vdc Na: 0…10Vdc + RS422 Nc: 0…10Vdc + push-pull Nd: 0…20mA + RS422 Nf: 0…20mA + push-pull Ng: 4…20mA + RS422 Ni: 4…20mA + push-pull Nj: –10Vdc… +10Vdc+ RS422 Nl: –10Vdc… +10Vdc+ push-pull Nm: - 20mA…+20mA + RS422 No: - 20mA…+20mA + push-pull 9 : A, A/ B, B/ 0, 0/ 0 gated A&B Number of pulses per turn Example : D10: 10 rpm C20: 200 rpm M30: 3000 rpm N6R: radial 12 pins CW M23 connector N3R020: radial 2m PUR cable NBR: terminal box, radial cable gland output 90mm NHM9 Solid : 11 12 2Na, 2Nd, 2Ng, 2Nm 3Nc, 3Nf , 3Ni, 2Nj, 3Nl, 3No 9 10000 max M60 max. N6R N3R020 NBR 90mm NHU9 Through : 30 2Na, 2Nd, 2Ng, 2Nm 3Nc, 3Nf , 3Ni, 2Nj, 3Nl, 3No 9 10000 max M36 max. N6R N3R020 200mm NHML Solid : 14 2Na, 2Nd, 2Ng, 2Nm 3Nc, 3Nf , 3Ni, 2Nj, 3Nl, 3No 9 10000 max. M36 max. N3R N6R Reference example NHM9_ 11 // 3Ni 9 // 1024 M36 // NBR |