RE20F optical encoders features compact, dia.: 20 mm low torque, low inertia rohs compliant part number designation RE20F - 100 - 100 series name output phase 1 a only 2 a & b (100 p/r only) resolution (p/r) 100, 300 resolution item output phases part number list of part numbers 100 (p/r) 300 (p/r) 100 (p/r) RE20F-100-100 RE20F-300-100 RE20F-100-200 a only a & b t verify the above part numbers when placing orders. starting torque inertia shaft loading (when mounting) radial axial net weight operating temp. range storage temp. range protection grade item output phases photo-sensor maximum current output wave form output phases 1 3
resolution phase difference of outputs a & b maximum frequency response output signal output signal amplitude variation light source standard specifications 45 ma maximum (at 25 c) a only a & b quasi-sinusoidal a a, b 100, 300 100 90 45 12 khz 150 mvp-p minimum 1 vp-p minimum 40 % maximum led electrical characteristics mechanical characteristics 0.05 mnm {0.5 gfcm} maximum 0.2 gcm 2 maximum 1.96 n {200 gf} maximum 4.9 n {500 gf} maximum approx. 15 g environmental characteristics 0 ~ 50 c ? 20 ~ 80 c ip40 t t t y measured at cp1 in the fig.a of measurement circuit on the following page. t y one phase only : measured at cp2 in the fig.a of measurement circuit on the following page. rohs compliant
16 0.1 epoxy awg26 2 C m 2 d = 3.5 min. 8.5 0.5 13.4 3 m a x. 20 80 min. 2 C 0.01 0 cw ccw output a output b 1/2t 1/2t 1/4t 1/8t t vibration power off power off power off power on power off power on power off power off shock high temperature exposure low temperature exposure humidity thermal shock outline dimensions unless otherwise specified, tolerance: 0.4 (unit: mm) output RE20F test item reliability test the output wave form and starting torque shall satisfy the standard specifications after the following tests. test conditions amplitude : 1.52 mm or 98.1 m/s 2 (10 g) whichever is smaller. 10 ~ 500 hz excursion 5 min/cycle, 1 hour each for x, y, z, directions. 1 time each in 6 directions (x, y, z) at 490 m/s 2 (50 g), 11 ms. 80 c 96 h (to be measured after leaving samples for 1 h at normal temperature and humidity after the test.) 50 c 96 h ? 20 c 96 h 0 c 96 h c relative humidity ? y i (to be measured after wiping out moisture and leaving samples for 1 h at normal temperature and humidity after the test.) to be done 10 cycles with the following condition (to be measured after leaving samples for 1 h at normal temperature and humidity after the test.) c iz ? c i RE20F optical encoders
led anode (elect.wire: green) phot-tr. collector (elect.wire: red) phot-tr. emitter (elect.wire: white) led cathode (elect.wire: black) led anode (elect.wire: green) phot-tr. collector (elect.wire: red) phot-tr. emitter (elect.wire: white) phot-tr. emitter (elect.wire: brown) led cathode (elect.wire: black) (green) (red) (white) (brown) (black) 82 +5 v output a output b 0 v 2 k max. 2 k max. +5 v 120 cp1 3 k 0.003 f 4.7 k 1/2 vcc 0.1 f 10 k cp2 220 k amp. +5 v output a output b 0 v comp. r 2 k (green) (red) b (brown) (black) a (white) 82 1.8 k 560 2 k circuit identical to output a ratings led photo-sensor maximum current 45 ma 4 v 75 mw ? 1.4 mw/c reverse voltage power dissipation (p d ) temp. derating of p d (25 ~ 60 c) collector current 20 ma 20 v 5 v 75 mw ? 1.0 mw/c collector to emitter voltage (forward) collector to emitter voltage (reverse) collector dissipation (p d ) temp. derating of p d (25 ~ 60 c) (at 25 c) (at 25 c) internal circuit measurement circuit frequency characteristics: 3 khz (at constant speed) RE20F optical encoders external schematics fig. a
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