2-116 h panel mount optical encoders technical data heds-5700 series features ? two channel quadrature output with optional index pulse ? available with or without static drag for manual or mechanized operation ? high resolution C up to 512 cpr ? long rotational life, >1 million revolutions ? -20 to 85 c operating temperature range ? ttl quadrature output ? single 5 v supply ? available with color coded leads description the heds-5700 series is a family of low cost, high performance, optical incremental encoders with mounted shafts and bushings. the heds-5700 is available with tactile feedback for hand operated panel mount applications, or with a free spinning shaft for applica- tions requiring a pre-assembled encoder for position sensing. the encoder contains a collimated led light source and special detector circuit which allows for high resolution, excellent encod- ing performance, long rotational life, and increased reliability. the unit outputs two digital wave- forms which are 90 degrees out of phase to provide position and direction information. the heds-5740 series provides a third index channel. * package dimensions optional wiring color code table color white brown red black blue (three channel) output a b v cc gnd i *note: for the heds-5700, pin #2 is a no connect. for the heds-5740, pin #2 is channel i, the index output. thread 3/8-32 nut 3/8-32 x 7/16" 5965-5871e
2-117 electrical characteristics over recommended operating range, typical at 25 c parameter symbol min. typ. max. units notes supply current i cc 17 40 ma two channel 57 85 three channel high level output voltage v oh 2.4 v i oh = -40 m a max. low level output voltage v ol 0.4 v i ol = 3.2 ma note: if more source current is required, use a 3.2 k pullup resistor on each output. the heds-5700 is quickly and easily mounted to a front panel using the threaded bushing, or it can be directly coupled to a motor shaft (or gear train) for position sensing applications. applications the heds-5700 with the static drag option is best suited for applications requiring digital information from a manually operated knob. typical front panel applications include instruments, cad/cam systems, and audio/video control boards. the heds-5700 without static drag (free spinning) is best suited for low speed, mechanized absolute maximum ratings parameter symbol min. max. units notes storage temperature t s -40 +85 c operating temperature t a -20 +85 c vibration 20 g 20 hz - 2 khz supply voltage v cc -0.5 7 v output voltage v o -0.5 v cc v output current per channel i o -1 5 ma shaft load C axial 1 lb C radial 1 lb recommended operating conditions parameter symbol min. max. units notes temperature t -20 +85 c noncondensing atmosphere supply voltage v cc 4.5 5.5 v ripple <100 mv p-p rotational speed C drag 300 rpm C free spinning 2000 rpm operations. typical applications are copiers, x-y tables, and assembly line equipment.
2-118 mechanical characteristics parameter min. typ. max. units notes starting torque C static drag 0.47 oz in C free spinning 0.14 oz in dynamic drag C static drag 1.1 oz in 100 rpm C free spinning 0.70 oz in 2000 rpm rotational life C static drag 1 x 10 6 revolutions 1 lb load C free spinning 12 x 10 6 revolutions 4 oz radial load mounting torque of nut 13 lb in heds-57 shaft configuration 0 - 1/4" dia. with no flat 1 - 6 mm dia. with no flat 2 - 1/4" dia. with flat drag option 0 - free spining 1 - static drag resolutions (cycles per revolution) heds-570x 2 channel k - 96 cpr g - 360 cpr c - 100 cpr h - 400 cpr d - 192 cpr a - 500 cpr e - 200 cpr i - 512 cpr f - 256 cpr heds-574x three channel* f - 256 cpr a - 500 cpr g - 360 cpr i - 512 cpr outputs 0 - 2 channel 4 - 3 channel mechanical configuration 0 - pins 1 - 6" coded leads output waveforms ordering information 360 ?5.5 180 ?45 s1 s2 s3 s4 90 ?45 typical 90 ?45 ch a ch b ch i note:
all values are in electrical degrees, where 360?e = 1 cycle of resolution.
errors are worst case over one revolution.
ch b leads ch a for counterclockwise rotation.
ch a leads ch b for clockwise rotation. *please contact factory for other resolutions.
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