features 3.3 and 5 vdc voltage supply option direction/step output (tachmometer) bushing or servo mount non-contacting magnetic technology small size cmos and ttl compatible resolution from 64-512 ppr long life high operating speed highly repeatable sealed option magnetic technology ems22d - non-contacting direction/step encoder *rohs directive 2002/95/ec jan 27 2003 including annex. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. *rohs compliant electrical characteristics resolution .................................................................................................................... ....................................................................................... 64 to 512 ppr insulation resistance (500 vdc) ............................................................................................... ....................................................................... 1,000 megohms electrical travel ............................................................................................................. ........................................................................................... continuous supply voltage ................................................................................................................ ....................................................... 5.0 vdc 10 %, 3.3 vdc 10 % supply current ................................................................................................................ ................................................................................ 20 ma maximum output voltage low output level ......................................................................................................... ........................................................................ vss+0.4 v maximum high output level ........................................................................................................ ..........................................................................vdd-0.5 v minimum output current with 4.5 vdc supply voltage .............................................................................................. ........................................................................ 4 ma maximum with 3.0 vdc supply voltage .............................................................................................. ........................................................................ 2 ma maximum rise/fall time (incremental output) ........................................................................................... .....................................................................500 ns maximum shaft rpm (ball bearing) ............................................................................................................................... .......................................... 10,000 rpm maximum hysteresis .................................................................................................................... ........................................................................................................ 0.7 accuracy nominal .................................................................................................................. ....................................................................................... 0.7 or better worst case ............................................................................................................... .................................................................................................... 1.4 output transition noise ....................................................................................................... ........................................................................... 0.12 rms max. environmental characteristics operating temperature range ................................................................................................... ..................................... -40 oc to +125 oc (-40 f to +257 f) storage temperature range ..................................................................................................... ......................................-55 c to +125 c (-67 f to +257 f) humidity ...................................................................................................................... ............................................ mil-std-202, method 103b, condition b vibration ..................................................................................................................... .........................................................................................................15 g shock ......................................................................................................................... .........................................................................................................50 g rotational life s bushing (@1,000 rpm) ............................................................................................................................... ...................................100,000,000 revolutions t & w bushings (@1,000 rpm with 250 g side load) ......................................................................... ................................................ 50,000,000 revolutions ip rating ..................................................................................................................... ........................................................................................................ ip 65 mechanical characteristics mechanical angle .............................................................................................................. ..............................................................................360 continuous torque starting ................................................................................................................. ...................................................................43 21 g-cm (0.6 0.3 oz-in.) running .................................................................................................................. .................................................................29 14 g-cm (0.4 0.2 oz-in.) mounting torque ............................................................................................................... .........................................................................203 n-cm (18 lb.-in.) shaft end play ................................................................................................................ ......................................................0.30 mm (0.012 ?) t.i.r. maximum shaft radial play ............................................................................................................. .....................................................0.12 mm (0.005 ?) t.i.r. maximum weight ........................................................................................................................ ...................................................................................... 11 gms. (0.4 oz.) terminals ..................................................................................................................... ....................................................................axial, radial or ribbon cable soldering condition manual soldering ......................................................................................................... .......... 96.5sn/3.0ag/0.5cu solid wire or no-clean rosin cored wire 370 c (700 f) max. for 3 seconds wave soldering ........................................................................................................... ................................. 96.5sn/3.0ag/0.5cu solder with no-clean ? ux 260 c (500 f) max. for 10 seconds wash processes ........................................................................................................... ........................................................................... not recommended marking ....................................................................................................................... ........... manufacturer?s trademark, name, part number, and date code. hardware ..................................................................one lockwasher and one mounting nut supplied with ea ch encoder, except on servo mount versions. pin con guration output type pin 1 pin 2 pin 3 pin 4 pin 5 pin 6 direction/step pulse direction gnd index vcc* cs** * can be 5 or 3.3 vdc depending on the version. ** active low chip select pin; if not used connect pin 6 to gnd.
direction/step output ppr 3.3 vcc 5.0 vcc index 1 index 3 512 xx 512 xx 512 xx 512 xx 256 xx 256 xx 256 xx 256 xx 128 xx 128 xx 128 xx 128 xx 64 xx 64 xx 64 xx 64 xx index 1 = 1 lsb t dir valid 500 ns index 3 = 3 lsb cw ccw z lsb direction speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. ems22d - non-contacting direction/step encoder output type waveform and variant table applications material handling equipment brushless dc motor commutation robotics automotive industrial automation petroleum re nery medical of ce equipment audio and broadcast equipment microprocessor chip select hardware sample encoder 1 a b a cs1 b
9.53 (.375) 20.88 .25 (.822 .010) 9.53 (.375) 9.53 (.375) 20.88 .25 (.822 .010) 22.23 .25 (.875 .010) 13.89 .38 (.547 .015) 15.88 .25 (.625 .010) 1.57 (.062) 13.89 .38 (.547 .015) 13.89 .38 (.547 .015) 1.57 (.062) 1.57 (.062) 1.57 (.062) 1.57 (.062) .51 .03 (.020 .001) 2.01 (.079) 5 plcs. 6 plcs. 6 plcs. 4.00 (.157) 4.00 (.157) 4.00 (.157) 2.79 (.110) .51 .03 (.020 .001) 10.29 (.405) dia. dia. 10.29 (.405) dia. 21.21 .25 (.835 .010) 3.17 +.00/-.01 (.1247 +.0000/-.0003) dia. 6.34 (0.249) 15.88 .25 (.625 .010) .51 .03 (.020 .001) 2.01 (.079) 5 plcs. 6 plcs. 6 plcs. 2.79 (.110) .51 .03 (.020 .001) 21.21 .25 (.835 .010) 15.88 .25 (.625 .010) .51 .03 (.020 .001) 2.01 (.079) 5 plcs. 6 plcs. 6 plcs. 2.74 (.108) .51 .03 (.020 .001) 21.21 .25 (.835 .010) 19.05 (.75) dia. dia. 3.17 +.00/-.01 (.1247 +.0000/-.0003) 22.23 (.875) dia. ems22d - non-contacting direction/step encoder dimensional drawings dimensions: mm (inches) consult factory for options not shown, including: wire lead or cable options special shaft/bushing sizes and features connectors special performance characteristics non-standard resolutions pcb mounting bracket shaft style d (bushing t) shaft style b (bushing s) shaft style d (bushing w) speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications.
bourns ems22 22 mm non-contacting direction/step encoder ems22d51-b28-ls5 shaft length designator* code 16 20 28 25 description 1/2 " long 5/8 " long 7/8 " long 25 mm long (available with d bushing only) voltage supply code 3 5 description 3.3 vdc 5 vdc output type code d description direction/step terminal configuration** code l m w description axial, multi- purpose pin rear ribbons cable with connector rear ribbons cable - no connector resolution code 2 3 4 5 ppr 64 128 256 512 shaft style code b c d r m available with bushings (code) s s t, w d d description 1/4 " dia., plain end 1/4 " dia., flatted end 1/8 " dia., plain end 6 mm dia., slotted end 6 mm dia., flatted end index channel code 1 3 description 1 lsb 3 lsb bushing designator code s t w d description 3/8 " d x 3/8 " l threaded (single ball bearing) 3/8 " d x 3/8 " l threaded (dual ball bearing) servo mount 7/8 " d (dual ball bearing) 9 mm d x 7.94 mm l threaded (single ball bearing) * shaft length measured from mounting surface. ** standard ribbon cable is 10 inches long. consult factory for other lengths. ems22d - non-contacting direction/step encoder how to order rev. 11/09 asia-paci c: tel +886-2 25624117 fax +886-2 25624116 europe: tel +41-41 7685555 fax +41-41 7685510 the americas: tel +1-951 781-5500 fax +1-951 781-5700 www.bourns.com speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications.
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