NEXT GENERATION OF MINIATURE LOW-COST, HIGH RESOLUTION OPTICAL ENCODERS WITH INTEGRAL CONNECTOR INTERFACE

Duncan Electronics, a division of BEI Technologies, Inc., has developed a new compact optical incremental encoder based on their reliable Opto-ASIC technology. The new device features an integral 5 pin mating connector that mates with both AMPHENOL and MOLEX standard configurations. This combination allows designers greater flexibility in integrating a very high resolution, complete encoder solution into an extremely small package, ready for "plug 'n play" installation.

The 920 Series offers one of the industry’s smallest optical disc-reading caliper configurations, capable of accepting disc radii as small as 9.78mm with resolutions up to 2450 PPR (Pulses Per Revolution). This Opto-ASIC technology allows the unit to be very tolerant to mounting alignment issues, enabling them to be installed without tight tolerance constraints. This is important when considering the added costs of time-consuming alignment issues during assembly.

Phased-Array Opto-ASIC Technology Advantages
The combined advantages of highly miniaturized packaging and the success of Duncan's Opto-ASIC design, a phased array photo diode IC noted for its high tolerance to axial movement (+/- 0.010") and low power consumption (50mA max.), the 920 offers a leveraged value in its use in a myriad of new and emerging applications, including security systems, meter control and automation applications. This range of Opto-ASIC chips offers 5-volt TTL-compatible dual channel quadrature output with index options.

New Integrated Connector, Reduced Footprint
Designed to further reduce assembly time and lower interfacing costs, the 920 Series is featured with an integral 5-pin connector that mates with industry standard AMPHENOL and MOLEX connector configurations. The unit's overall footprint is only 1.25" x 1.05" x 0.39" (31.75mm x 26.67 x 9.9mm), including caliper, connector and PCB mounting board. The 920 can be specified for SMT or conventional fastener mounted installations.

Standard stainless steel code disks are available in a broad range of standard radii, with standard resolutions starting at 90 PPR (0.365"/9.78mm radii) and ranging up to 2540 PPR (requiring a .920"/23.37mm optical radius). This family of disks can also accommodate shaft diameters from 0.125" to 1.0". Not all resolutions are available in each diameter. BEI Duncan Electronics also offers a lower cost photographic film code disk capable of operation at 105 C and resolutions up to 2540 PPR.

"This new generation encoder offers high performance with very small space needs, where to the design engineer these attributes are rarely this compatible" stated John Pindroh, BEI Duncan Sales Manager. He further stated, "The joint efforts between core customers and our engineering group enabled us to balance these constraints, resulting in greater product flexibility and lower unit pricing."

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa...
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin...
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more