features 3.3 and 5 vdc voltage supply option quadrature, absolute, pwm and direction/ step output options bushing or servo mount non-contacting magnetic technology small size cmos and ttl compatible resolution from 32-512 ppr and 1024 states long life high operating speed highly repeatable sealed option ems22 - non-contacting rotary magnetic 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 .................................................................................................................... ............................................................ 32 to 512 ppr and 1024 states 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 linearity ..................................................................................................................... ...................................................................................................... 0.35 % accuracy nominal .................................................................................................................. ....................................................................................... 0.5 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 a/b quadrature a b gnd index vcc* cs** direction/step pulse direction gnd index vcc* cs** pwm pwm signal gnd gnd gnd vcc* cs** absolute digital input clock gnd digital output vcc* cs** * can be 5 or 3.3 vdc depending on the version. ** active low chip select pin.
speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications ems22 - non-contacting rotary magnetic encoder output type waveforms and variant tables applications material handling equipment brushless dc motor commutation robotics automotive industrial automation petroleum re nery medical of ce equipment audio and broadcast equipment quadrature output ppr 3.3 vcc 5.0 vcc index 1 index 3 256 xx 256 xx 256 xx 256 xx 128 xx 128 xx 128 xx 128 xx 64 xx 64 xx 64 xx 64 xx 32 xx 32 xx 32 xx 32 xx a b z index 3 = 3 lsb 360 ppr = 1 cycle index 1 = 1 lsb edge separation csn clk d0 t csn t clkfe t d0 tristate t clk/2 0 15 07 status bits angular position data parity bit t d0 valid t d0 active d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 s1 s2 s3 s4 s5 p1 d9 absolute output data content description d9:d0 absolute angular position data s1 end of offset compensation algorithm s2 cordic over? ow indicating an error in cordic part s3 linearity alarm s4 increase in magnitude s5 decrease in magnitude p1 even parity for detecting bits 1-15 transmission error
pwm output direction/step output parameter symbol type unit note pwm frequency fpwm 0.9756 khz signal period: 1025 s min pulse with pwmin 1 s position 0 angle 0 max pulse with pwmax 1024 s position 1023 angle 359.65 analog output using an external low pass filter vcc 0 v 0 360 0 deg (pos 0) 359.65 deg (pos 1023) 1 1025 pw max 5 % pw min 5 % 1/f pwm 5 % angle 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 index 3 = 3 lsb cw ccw z lsb direction r c v in v out ems22 - non-contacting rotary magnetic encoder output type waveforms and variant tables (continued) speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications
speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications 3312 - 2 mm smd trimming potentiometer 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. ems22 - non-contacting rotary magnetic 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 3312 - 2 mm smd trimming potentiometer bourns ems22 22 mm non-contacting rotary magnetic encoder ems22s51-b28-lq3 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 q a p d description quadrature cw absolute cw pwm 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 1 2 3 4 5 6 ppr/ states*** 32 64 128 256 512 1024*** avail. with output types q q, d q, d q, d d a, p 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 0 1 3 available with output types (code) a, p q, d q, d description no index 1 pulse 3 pulses 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 lon g . consult factory for other len g ths. ems22 - non-contacting rotary magnetic encoder how to order rev. 01/09 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
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