MODEL H20 INCREMENTAL ENCODER Product Description The H20 is an extremely rugged encoder designed to economically fill the resolution range up to 4096 cycles per turn. This compact unit features a shock resistant disc, heavy duty bearings, and EMI shielding. The H20 conforms to NEMA 4 and 13 requirements. The H20 is also available in a hub shaft style with a flexmount for easy mounting directly to small motors. Typical applications of the H20 include machine control, process control, agricultural machinery, textile equipment, robotics, food processing, and metering. SPECIFICATIONS Mechanical Specifications Shaft Diameter 1/4 thru 3/8 and metric versions. Hollow shaft, hub shaft or thru-shaft versions available. Flats On Shaft 0.75 long X 0.03 deep Shaft Loading Up to 40 lbs. axial and 40 lbs. radial Shaft Runout .001 T.I.R. maximum 1.0 in-oz maximum without shaft seal 2.5 in-oz maximum with shaft seal Starting Torque at 25C 4.0 in-oz thru-shaft Bearings 52100 bearing steel Shaft Material 303 stainless steel Bearing Housing Die cast aluminum with iridite finish stainless steel (special feature) Die cast aluminum with protective finish (For MS or CS terminations), otherwise d rawn aluminum with protective finish Cover stainless-steel (special feature) 9 Bearing Life 1.5 X 10 revs at rated load (10,000 hrs at 2500 RPM) Maximum RPM 8,000 RPM (see frequency response, below) -4 2 Moment of Inertia 2.0 X 10 oz-in-sec Weight 9 oz. typical Page 1 www.sensata.com Copyright 2018 Sensata Technologies, Inc. Specification No. 02055-001 Rev. 02/18Electrical Specifications Code Incremental 2 channels in quadrature, 1/2 cycle index gated with negative B channel as standard. Output Format Ungated index when OC is specified as the output device 1 to 4096 (see table A) Cycles per Shaft Turn For resolutions above 1024 contact BEI for interpolation options Supply Voltage 5 to 28 VDC available Current Requirements 100 mA typical + output load, 250 mA (max) (see note 5) 28V/V: Line Driver, 528 VDC in, V = V out in Voltage/Output 28V/5: Line Driver, 528 VDC in, V = 5 VDC out 28V/OC: Open Collector, 5 28 VDC in, OC out Reverse, overvoltage and output short circuit Protection Level (see note 5) 100 KHz (up to 1024 cpt 400KHz with interpolation option (see note 7)) Frequency Response see Table 1, following pages Output Terminations Note: Contact factory for other electrical options Environmental Specifications NEMA 4 & 13 (IP66) when ordered with shaft seal (on units with an MS connector) and a cable gland Enclosure Rating (on units with cable termination) Operating, 0 to 70C Temperature extended temperature testing available (see note 8) Storage, -25 to 90C unless extended temperature option called out Shock 50 gs at 11msec duration Vibration 5 to 2000 Hz 20 gs Humidity 98% RH without consideration Notes and Tables: All notes and tables referred to in the text can be found in the pages that follow. Page 2 www.sensata.com Copyright 2018 Sensata Technologies, Inc.