tel: 805 - 968 - 0782 /800 - 350 - 2727 | fax: 805 - 968 - 3154 /800 - 960 - 2726 | 7230 hollister ave., goleta, ca 93117- 2807 | www.beiied.com specificati on no. 02122 - 001 rev11 - 10 bei sensors mx21 insta - mount ? series ? modular incremental rotary optical encoder by the time you have read this first sentence, you could have installed bei?s model mx21 insta - mount? modular o ptical encoder. in addition to its quick and easy installation, the mx21 is designed to operate with jitter - free output signals without tight controls on shaft endplay, runout, or perpendicularity. the new insta - mount? encoder is capable of operating with in a temperature range of - 10to +70c, requiring less than 30 milliamps of l.e.d. current, without degradation of output signals and is short circuit protected. the mx21 is perfectly suited for motor manufacturers and other high volume oems. bei?s inst a - mount? series encoder offers 5v ttl compatible quadrature outputs with index and complements as options. axial shaft movements during operation, o f0.010", will not adversely affect the output signals. shaft runouts of 0.005" tir can also be absorbed b y this device without affecting output signal performance. mechanical specifications dimensions: see figure 1 weight: 2.1 oz. (approx.) moment of inertia: 2.6 x 10 - 5 oz in sec 2 bore size: see ?ordering options? motor interface mount holes: #4 - 40 or m3 x 0.5 @ 180 on 1.812? dia. b.c. mount har dware: 2 sockethead cap screws perpendicularity shaft to mount \ : 0.002? tir shaft runout: 0.005? max (each 0.0001 degrades accuracy by 0.5 arc minutes) shaft endplay dynamic or static: 0.010? shaft finish: 16 micro inches or better. end must be chamfer ed or rounded shaft tolerance: nominal - 0.0002?/ - 0.0007? shaft length: 0.56? minimum remove (remove cover button for motor through - shafts) electrical specifications code: incremental pulses per revolutions (ppr): see ?ordering options?) ind ex pulse options ungated index (u) (no index on mx212) gated index (g) supply voltage: 5 volts 5% @ 80ma max. output format: dual channel quadrature & index (mx212 & 213) (no index on mx212) (mx216) dual channel quad & index w/ comps output type: (mx212 &213): square wave ttl. 16ma sink 500a source. short circuit protected (mx216): ttl differential line driver (26ls31 or equiv.) should be terminated into a line receiver (26ls32, or equivalent circuit) frequency response: see graph: fig 3 rise time: 1.0 sec. max. environmental specifications temperature: operating: - 10c to +70c storage: - 40c to +125c termination specifications ribbon: 28 awg flat ribbon cable with 10 position connector berg p/n 65863 - 165 or eq uiv. mates with berg p/n65863 - 165 or equiv) (mating connector not provided) round cable: 28awg 8 conductor shielded cable *note: see pinout tables, back page. mx21 series enco der ordering options: for assistance, call 800.350.2727 use this diagram, working from left to right to construct your model number (example: mx213 - 38- 512- g- r18 ) x xxx mx2 1 xxxx x output format: 2= quadrature 3= quadrature w / index 6 = quadrature w / index & complements index option *for output formats 3 and 6 only g= gated to data a & b u= ungated electrical termination: cxx = round shielded cable rxx = ribbon cable with 10 pin soc ket header (xx = length of cable in inches; 18 inches standard) xx bore size: 25 = .25? 38 = .375? 6m = 6mm 8m = 8mm, 10m = 10mm pulses per revolution (ppr): 200, 400, 500, 512, 1000, 1024
tel: 805 - 968 - 0782 /800 - 350 - 2727 | fax: 805 - 968 - 3154 /800 - 960 - 2726 | 7230 hollister ave., goleta, ca 93117- 2807 | www.beiied.com specificati on no. 02122 - 001 rev11 - 10 preparation: 1. inspect motor interface per mx21 data sheet or specification drawing. 2. motor shaft must be free of burrs & other surface defects. installation: 1. motor shaft should not be rotating during initial encoder installa tion. 2. hold encoder perpendicular to motor shaft. guide the encoder onto the motor shaft, pushing encoder straight on until it is flush against the mount surface. do not rock side to side. 3. install two #4 - 40 mount screws. do not fully tighten at this point . (note: a thread sealant should be applied to the screw threads) 4. rotate the motor shaft (300 rpm, minimum). press the air - gap button until it bottoms to the top of the encoder momentarily, then release. caution: do not press air - gap button while motor shaft is stationary. button should only be pressed for one or two seconds while shaft is rotating. 5. tighten mounting screws fully. (recommended torque is 30 to 40 ounce inches.) 6. this completes the mechanical installation. proceed with electrical connecti ons as indicated on product data sheet or specification drawing. removal: 1. motor shaft may be stationary or rotating up to 1000 rpm during encoder removal. 2. remove two mounting screws. 3. grasp encoder firmly and pull straight off of the motor shaft. do not ro ck side to side. dimensions bei sensors output waveform mx21 insta - mount ? series ? modular incremental rotary optical encoder figure 3 terminations ccw rotation of shaft mx212 outputs a & b only mx213 outputs a, b & i ndex only mx216 outputs as shown 360 e nom 180e nom 90e nom a a b b index index index gated to a&b 90 e to 450e index ungated installation instructions these commodities, technology or softw are if exported from the united states must be in accordance with the bureau of industry, and security, export administration regulations. diversion contrary to u.s law is prohibited.
tel: 805 - 968 - 0782 /800 - 350 - 2727 | fax: 805 - 968 - 3154 /800 - 960 - 2726 | 7230 hollister ave., goleta, ca 93117- 2807 | www.beiied.com specificati on no. 02122 - 001 rev11 - 10 color codes red +5v black ground white a green b orange index blue wht/blk b red/blk index bei sensors mx21 insta - mount ? series ? modular incremental rotary optical encoder
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