Agilent HEDR-542x Miniature Reflective Optical Encoder Product Brief Features and Benefits • PWE <15 degrees SWE <30 degrees – Accurate system control • Small footprint – Saves space on PCB; can be used in small motor system where space is a constraint Introduction Agilent’s optical encoders are used in a variety of motion control applications to provide position, velocity and direction sensing. About the Products The HEDR-542x is an easy-tomount, high-performance, reliable, two-channel encoder. The HEDR-542x offers a resolution of 200 counts per revolution, featuring typically less than 15 electrical degrees pulse width error (PWE) and less than 30 electrical degrees for combined phase and state width error. • Cost effective solution – Value added at low cost The HEDR-542x is ideal for equipment using small and miniaturized motors, operating within the 0oC to +85oC temperature range, and operating from a 5-volt supply. Product Mechanism HEDR-542x encoders translate the rotary motion of a shaft into a two-channel digital quadrature output. The light emitted from a LED is focused onto a reflective codewheel. As the shaft moves, the codewheel rotates, reflecting light from an alternating bright and dark pattern. The transitions are detected by a photodetector IC. • Several mounting options are available – Press fit, set screw and mounting ears to suit design and size of motors • Easy assembly – Shortens assembly time Typical Applications • Vending machines • Volumetric dispenser • Card readers (automated teller machines) • Robotics • Security camera controls • Paper feed control (office automation) Agilent Miniaturized Reflective Optical Kit Encoder Product Selection Part Number Resolution Shaft Size Connector Hub HEDR-5420-ES201 200 CPR 0.08" (2 mm) Axial Set screw with mounting ears HEDR-5420-ES202 200 CPR 0.12" (3 mm) Axial Set screw with mounting ears HEDR-5420-ES203 200 CPR 0.13" (3.30 mm) Axial Set screw with mounting ears HEDR-5420-ES211 200 CPR 0.16" (4 mm) Axial Set screw with mounting ears HEDR-5420-ES214 200 CPR 0.20" (5 mm) Axial Set screw with mounting ears HEDR-5421-EP111 200 CPR 0.16" (4 mm) Right Angle Press fit without mounting ears Schematics of Typical Applications of HEDR-542x HEDR-542x BELT CANS MOTOR ROLLER ROLLER CARD DOOR BELT Figure 2. Encoder Used in a Banking Autoteller Machine. (drawing not to scale) MOTOR BALL SCREW MOVING PART WITH SENSOR CARD READER HEDR-542x Figure 1. Encoder Used in a Vending Machine. (drawing not to scale) HEDR-542x LEAD SCREW GEARED MOTOR www.agilent.com/semiconductors For product information and a complete list of distributors, please go to our web site. SYRINGE For technical assistance call: Americas/Canada: +1 (800) 235-0312 or (408) 654-8675 Europe: +49 (0) 6441 92460 China: 10800 650 0017 Hong Kong: (+65) 271 2451 India, Australia, New Zealand: (+65) 271 2394 Japan: (+81 3) 3335-8152(Domestic/International), or 0120-61-1280(Domestic Only) Korea: (+65) 271 2194 Malaysia, Singapore: (+65) 271 2054 Taiwan: (+65) 271 2654 Data subject to change. Copyright © 2002 Agilent Technologies, Inc. Obsoletes 5988-4974EN January 9, 2002 5988-5388EN Figure 3. Encoder Used in a Volumetric Dispenser Machine. (drawing not to scale)