cui .com date 05/04/2011 page 1 of 6 series: AMT303 description: modular encoder electrical parameter conditions/description min nom max units power supply 4.5 5 5.5 v current consumption 8 10 ma commutation output signals u, v, w phase commutation pole 2, 4, 6, 8, 10, 12, 20 (software programmable) incremental output signals a, b, z (AMT303) a, a, b, b, z, z (AMT303ld) incremental output waveform square wave incremental output resolutions 96, 192, 200, 250, 384, 400, 500, 512, 800, 1000, 1024 ppr index one pulse per 360 deg. incremental output current output voltage - sourcing to +5 v at -32 ma output voltage - sinking to ground at -32 ma 3.8 0.55 v v mechanical parameter conditions/description min nom max units output range 360 deg. mounting options a) 2 x m1.6 on 16 mm (0.63) bolt circle b) 2 x #4 on 19.05 mm (0.75) bolt circle c) 2 x m1.6 or m2 on 20 mm (0.787) bolt circle d) 3 x m1.6 or m2 on 20.9 mm (0.823) bolt circle with washers in option b holes e) 3 x m1.6 or m2 on 22 mm (0.866) bolt circle f) 4 x m1.6 or m2 on 25.4 mm (1) bolt circle environme ntal parameter conditions/description min nom max units operating temperature -40 125 c humidity 85 % vibration 1.5 mm, 3 directions, 2 hours 10 55 hz fe atures ? u, v, w commutation lines ? small size 37 mm ?line count up to 1024 ppr ? optional line driver output (303ld) ?single pulse index ? capacitive asic technology ?modular locking hub design for ease of installation ?2, 4, 6, 8, 10, 12, or 20 pole motors ? 6 programmable functions ? one touch commutation signal alignment rohs ? ?
series: AMT303 modular encoder description: date 05/04/2011 page 2 of 6 cui inc cui .com pa r t number key for customers that prefer a specifc AMT303 confguration, please reference the custom confguration key below. AMT303 - xx - xxxx - xxxx - xx - xx resolution (ppr): 0096 0500 0192 0512 0200 0800 0250 1000 0400 1024 sleeve bore diameter: 2000 = 2 mm 3000 = 3 mm 3175 = 3.175 mm (1/8) 4000 = 4 mm 4760 = 4.76 mm (3/16) 5000 = 5 mm 6000 = 6 mm 6350 = 6.35 mm (1/4) 8000 = 8 mm base number AMT303 kit s in order to provide maximum fexibility for our customers, the AMT303 series is provided in kit form standard. this allows the user to implement the encoder into a range of applications using one sku#, reducing engineering and inventory costs. (4.76mm) 3mm 4m mm m 2 m m 5 3/16 inch 1/4 inch (6.35mm) (3.175mm) 6mm 8mm 1/8 inch snow e u l b y k s t h g i l e g n a r o 1 e l p r u p 0 6 y a r g 1 w o l l e y 1 d e rg reen 1 blue sleeves adapter shaft base tool a top cover tool c output signals: blank = a, b, z, u, v, w ld = line driver a, a, b, b, z, z, u, v, w motor poles: 02 10 04 12 06 20 08 direction: blank = ccw cw = clockwise amt 303xx- v output signals: blank = a, b, z, u, v, w signals ld = line driver a, a, b, b, z, z, u, v, w signals ordering guide
series: AMT303 modular encoder description: date 05/04/2011 page 3 of 6 cui inc cui .com pinout connector 1 14 13 12 11 10 9 8 7 6 5 4 3 2 1 function AMT303ld AMT303 z a b 5 v+ gn d gnd_c zero set u w v -b -a -z n/a z a b 5 v+ gn d gnd_c zero set u w v n/a n/a n/a n/a # b 9 14 8 scale 4 : 1 13 2 12 5 10 7 4 3 11 6 detail b 1 encoder interf ac e demo board cable (cable available without demo board connector) encoder side demo board side 10 conducto r 1.27 mm pitc h 28 awg (304.8) 1' 0.25" samtec isdf-07-d
series: AMT303 modular encoder description: date 05/04/2011 page 4 of 6 cui inc cui .com 0.55 r2.1 00 .083 25.48 1.003 1.70 0.067 (2 plcs) 16.00 0.630 0.116 (2 plcs) 2.00 0.079 (4 plcs) 22.00 0.866 21.45 0.844 20.90 0.823 19.05 0.750 2.95 12.60 0.496 15.33 0.604 a (3 plcs) 10.93 0.430 37.39 1.472 10.34 0.407 15.30 0.602 r 0.610 15.49 28.581 .125 specified 0.05mm unless otherwise tolerance : detail a scale 4 : 1 mechanical dra wing AMT303ld comm wwyy us patent no. 6892590 scale 5:1 18.60mm r1.20mm 5.30mm AMT303 comm wwyy us patent no. 6892590 scale 5:1 18.60mm r1.20mm 5.30mm
series: AMT303 modular encoder description: date 05/04/2011 page 5 of 6 cui inc cui .com encoder oper ational mode initialization mode: C at power up the encoder goes through an initiation and stabilization procedure. this includes microprocessor stabilization and the program for combining coarse and fine channel of the encoder for getting the absolute start position. this takes less than 0.1 seconds. t racking mode: C mcu 12 bit position register is updated from fine asic every 48 s. C the commutation program in the mcu has a compensation for the average delay caused by the update rate, leaving a remaining jitter of less than 24 s rms. ?the communication jitter expressed in electrical degrees will be proportional speed and does not reach 6 deg rms until the speed reaches the following values: commu tation alignment and setting the zero point we strongly recommend the use of the AMT303 series demo board to set commutation zero. it greatly simplifes and expedites the process. the demo board also allows setting of resolution, # of motor poles, direction of quadrature increment, and commutation angle offset (when required). if you do not have or cannot obtain a demo board, use the following procedure to align the AMT303xx commutation angle with your motor: 1. mount the AMT303 series encoder to the motor. 2. put the motor in a locked rotor condition. this is usually done by applying +v to phase a and ground to phase b. consult your motor manufacturer if you are not certain how to lock the rotor for commutation alignment. 3. with the motor in a locked rotor position, pull pin# 2 (zero set) low to write the rotor position into non-volatile memory in the encoder. 4. power cycle the encoder, i.e., remove power from it. the commutation position is now permanently aligned with the motor rotor zero position and will use this offset at initialization every time at startup. note: the procedure is based on the standard wye motor phase connection confguration. if your motor uses other than the wye phase connection, you must acquire the AMT303 series demo board to program the required offset to align encoder commutation signal zero with motor zero position. AMT303 series demo board instructions can be found here. pole count 4 6 8 10 12 20 speed limit rpm 17,361 11,574 8,681 6,944 5,787 3,472
series: AMT303 modular encoder description: date 05/04/2011 page 6 of 6 cui inc cui offers a two (1) year limited warranty. complete warranty information is listed on our website. cui reserves the right to make changes to the product at any time without notice. information provided by cui is believed to be accurate and reliable. however, no responsibility is assumed by cui for its use, nor for any infringements of patents or other rights of third parties which may result from its use. cui products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. headquarters 20050 sw 112th ave. tualatin, or 97062 800.275.4899 fax 503.612.2383 cui .com techsupport@cui.com rev. description date 1.0 initial release 05/04/2011 the revision history provided is for informational purposes only and is believed to be accurate. revision his to ry
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