the e20 series was developed to provide high precision angular position signals at an affordable price. the design consists of a patented glass disc and hub assembly, focused infrared light source, a proprietary monolithic photodetector array, and signal conditioning electronics. the models e202 and e203 encoders offer 7406 open collector outputs yielding temperature stability and the ability to transmit signals long distances with high noise immunity. the model e206, with its 26ls31 line driver output is available for applications where rs422 compatibility is needed. reliability is assured through the use of a single led source and collimating lens. hybrid electronic circuitry and common substrate arrays further enhance long-term operation and temperature stability. proven design and bei experience make the models e202, e203 and e206 bargains for the robotic, process control, instrumentation and related markets. standard features line counts up to 2540 ppr open collector differential 7406 buffer driver in the e202 and e203 rs422 compatible 26ls31 differential line driver in the e206 index pulse 3 mounting configurations focused ir/led 100 khz frequency response 2-year warranty e20 series enclosed incremental rotary optical encoder 1.66 (47) strain relief 8 pin header .125 (3.2) .12 (3) .11 (2.8) .50 (15) .2497 (6,34) +0000 -0003 +000 -002 .687 (17.45) 1.875 (47.6) #4-40 thds. x .20 dp on 1.00 dia. b.c. (25.4) 2.05 (52.3) .18 (4.5) 2.06 sq. 52.3 .125 dia 4 plcs. (3.2) .875 typ. (22.2) figure 1 servo mount figure 2 flange mount (dimensions not shown, same as figure 1) all dimensions in inches .xx = .02 .xxx = .005 15771 red hill avenue tustin, ca 92780-7303 (714) 258-7500 fax: (714) 258-4629 email: sales@beiduncan.com www.beiduncan.com iso9001 certified/qs9000 compliant e20 data sheet 1/11/2001 10:07 am page 1
e20 series enclosed incremental rotary optical encoder specifications subject to change without notice. printed in u.s.a. be0025-e20-1001 mechanical dimensions see figures 1 and 2 weight 4 oz. shaft size 0.2497 +0.0000 -0.0003 shaft load axial 4 lbs., radial 8 lbs. torque, starting less than 0.4 oz. in. running less than 0.2 oz. in. inertia 1.8 x 10 -4 oz. in./sec 2 electrical code incremental pulses per revolution see ?rdering information supply voltage +5v 5% @ 135ma max. output format dual channel quadrature with complements. index with complements available. output type (e202, e203) ttl buffer/driver (7406) output voltage 1k ohm pull-up resistor 5.5v min. breakdown sink current 40ma output type (e206) ttl differential line driver (26ls31 or equiv.) should be terminated into a line receiver (26ls32, or equivalent circuit) frequency response data & index 100 khz environmental temperature less than 1800 ppr operating 0 to +70? storage -25 to +90? 1800 ppr or greater operating 0 to +55? storage -25 to +90? termination options header 8 pin single row pc board header (molex 22-23-2081 or equivalent) mating connector included molex 22-01 3087 or equivalent with crimp terminals for 22-30 awg wire terminal board 1/16" circuit board, 2 rows of 8 holes, 0.40 dia. plated through on 0.10 centers for 22-30 awg wire performance specifications figure 3 pinout table 1 e20 x - xxxx - x - x basic model no. output format 2 = quadrature w/complements 3 = quadrature w/index & complements (7406 buffer drive) 6 = quadrature w/index & complements (26ls31 line driver) pulses per revolution (ppr) see table 1 mounting and termination 1 = servo mount w/header 2 = servo mount w/terminal board 3 = flange mount w/header 4 = flange mount w/terminal board options 0 = open collector (e202 & e203 only) 1 = 1k pull-up resistor (e202 & e203 only) ordering information 87654321 a a z - index z- index +5v gnd b b example: e202-1000-1-1 5 10 20 80 100 120 200 250 256 300 360 500 510 512 625 640 720 1000 1024 1140 1386 1500 1600 1800 2000 2048 2400 2500 2514 2540 360 e nom. 180 e nom. 90 e nom. a a b b 90 e to 450 e index index index cw rotation of shaft e202 outputs a & b only e203 outputs a, b & index only e206 outputs as shown figure 4 15771 red hill avenue tustin, ca 92780-7303 (714) 258-7500 fax: (714) 258-4629 email: sales@beiduncan.com www.beiduncan.com e20 data sheet 1/11/2001 10:07 am page 2
|
