AEAT-601B incremental magnetic encoder data sheet description avago technologies incremental magnetic encoder pro- vides an integrated solution for angular detection within a complete 360 rotation. the use of magnetic technol- ogy for motion control and sensing activities eliminates mechancial contact and enables this device to be free from mechanical wear and tear. three-channel output provides an additional index channel for every full rota- tion or revolution of 360. an additional advantage is that the encoders upper rotational speed limit is typically only limited by the application's bearing speed. exploded view features resolution of 256 counts per revolution (cpr) contactless sensing technology wide temperature range from -40 to 125 c 3-channel output single 5v supply easy assembly and no signal adjustment required direct connectivity through cable output rohs compliant applications speed detection knob control rotary encoders
2 table 1. absolute maximum ratings [1, 2] parameter symbol limits units dc supply voltage at pin v dd = 5v v dd -0.3 to + 7 v input voltage v i -0.3 to v dd +0.3 v storage temperature t stg -40 to 125 c notes: 1. stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. this is stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this s peci?cation is not implied. 2. exposure to absolute maximum rating conditions for extended periods may a?ect reliability. table 2. recommended operating condition parameters symbols values units notes dc supply voltage at pin v dd = 5v v dd +4.5 / +5.5 v operating temperature t amb 40/125 c rotational speed : mechanical (max) 12000 rpm electrical (max) 7000 rpm notes: 1. under recommended mounting and tolerance, and mechanical shaft pla y, the incremental encoder's quadrature output (quater cyc le phase shift between channel-a and channel-b) is always maintained. the dynamic performance of the encoder output are depicted in the ?gures under encoding characteristic. 2. the magnetic incremental output has a ?xed hysteresis of 0.7 deg rees for all di?erent cpr options (equivalent to 2 quadratur e counts at 256 cpr or 0.5 quadrature count at 64 cpr). 3. the quadrature decoding of both the channel-a and channel-b would ensure that the incremental counts are maintained even whe n there is transition noise due to ?uctuation of the magnetic ?eld strength. table 3. dc characteristics dc characteristics over recommended operating range, typical at 25 c parameter symbol condition values units notes min typ. max v dd supply current i dd 16 20 ma output high voltage v oh v dd -0.5 v output low voltage v ol vss+0.4 v output current i o 4mav dd pin = 4.5v
3 table 4. encoding characteristics encoding characteristics over recommended operating range, typical at 25 c over speed range. parameter symbol typ. units index pulse width po 150 e AEAT-601B performance characteristics state error 0 10 20 30 40 50 60 70 80 90 100 0 2000 4000 6000 8000 e rpm cycle error 0 10 20 30 40 50 60 70 80 90 100 0 2000 4000 6000 8000 rpm duty error 0 10 20 30 40 50 60 70 80 0 2000 4000 6000 8000 rpm e e 256cpr 64cpr 256cpr 64cpr 256cpr 64cpr
4 mounting consideration # parameter unit values 1 maximum shaft axial play mm * 0.08 2 maximum shaft tir mm * 0.05 3 maximum mechanical speed rpm 12,000 4 shaft diameter mm 6 +0 / -0.01 5 moment inertia g-cm2 0.104 6 shaft length mm 8.5 1.0 7 mounting screw size mm m2 x 0.4 x 8 (socket head cap screw, head ?3.8 0.18mm) 8 recommended screw torque lb.inch 0.6 9 encoder base plate thickness mm 2 10 bolt circle mm * 0.13 * recommended to follow these limits for optimum performance figure 1. package and recommended mounting dimension figure 2. accessories - heds-8934, a set of optional centering and gap setting jigs (available for purchase separately) package dimensions optional - base gap setting plate (refer to application note for details) optional - centering jig (refer to application note for details) wire 1 50 mm 23.0 mm 1 9.0 mm mounting base
for product information and a complete list of distributors, please go to our web site: www.avagotech.com avago, avago technologies, and the a logo are trademarks of avago technologies in the united states and other countries. data subject to change. copyright ? 2005-2009 avago technologies. all rights reserved. av02-2176en - december 15, 2009 output waveform figure 3. incremental output waveform electrical connections figure 4. electrical connections ordering information: AEAT-601B-f06 256cpr, 3 channel incremental, 6mm hub size heds-8934 alignment tools set note: resolution options of 32,64 and 128cpr is also available. contact factory for these options. pin symbol color 1 5v yellow 2 gnd red 3 ch a brown 4 ch b orange 5 index black note: channel-b leads channel-a at 90 e at clockwise direction (top view of the encoder) and channel-a leads channel-b at 90 e at anti-clockwise direction. b a i s1 s2 s3 s4 p c 360 e i po key: s - state p - pulse c - cycle i - index gnd (red) a (brown) b (orange) index (black) 5v (yellow) top - 1 front - 1 right - 1 23.0 19.0 pig tail 6.0 26awg 150 10
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