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Network LED dimmer controls LED brightness over serial networks Industrial automation manufacturer Opto 22 has announced the Network LED Dimmer, a compact, solid-state, and networkable LED dimmer that uses pulse width modulation (PWM) to control LED brightness (0-100%) for 9-30 VDC constant voltage LED lighting assemblies such as lamps, bulbs, strips, ropes, and bars. Used alone or teamed with other Dimmers, the Network LED Dimmer is suitable for any application that requires variable light from LEDs. Lighting designers, facility engineers, and architects can use the Dimmer in applications such as stage or accent lighting, LED color mixing, path marking, backlighting, and facade or wall lighting. When connected to an RS-485 serial network, multiple Network LED Dimmers can be integrated into a lighting, automation, or building control system that supports DMX512-A, Modbus/ASCII, or Optomux network protocols. The compact Network LED Dimmer is also suited for vehicle and vessel applications, where energy efficiency and long life of low-voltage LED lighting is critical. The Dimmer includes a built-in test pushbutton for ramping LED intensity up and down, connectors for wiring a pushbutton for manual operation, and indicator lights to show serial communication and ramping operation. As with other Opto 22 products, the Network LED Dimmer has a QR code imprinted on the inside cover that makes current documentation and configuration information available immediately. Opto 22 www.opto22.com Photocouplers offer high-speed switching and integrated IGBT protection function Renesas Electronics has introduced two new photocouplers PS9332L and PS9332L2, with an integrated insulated-gate bipolar transistor (IGBT) protection function, for applications such as industrial machinery and solar power systems. The new PS9332L and PS9332L2 feature an integrated active Miller clamp circuit to prevent IGBT malfunction, world-top-class high-speed switching (20 percent faster than conventional products) among IGBT drive photocouplers with integrated IGBT protection function, compact 8-pin SDIP (shrink dual inline package), and guaranteed hightemperature operation. The photocouplers can be used for gate drive of IGBT devices used in inverter circuits for motor control. A photocoupler combines in a single package a light emitting diode (LED) on the input side, to convert an electrical signal into light, and a photo detector on the output side, to convert the light into an electrical signal. The input and output sides are electrically isolated from each other because the signal is conveyed between them in the form of light. Types of photocouplers include general-purpose photocouplers (transistor output) for applications such as power supply, and IGBT drive photocouplers, which are used for gate drive of IGBT devices in applications such as solar power generators or general-purpose inverters. Renesas Electronics Europe www.renesas.eu Male 90° SMT connectors with latch and PCB pegs Nicomatic has released latched male 90° SMT headers with latch and molded pegs which align and brace the PCB tails for trouble free assembly and use. These new headers are designed to enable 90° soldering on PCB. Two functions allow the right PCB integration thanks to PCB pegs made for plated or non-plated holes: a perfect placement on PCB and excellent PCB retention. Whilst the PCB pegs is usually sold as an option, Nicomatic has considered it as a standard product for the SMT 90° PCB integration of the header (solder process). The triangular shape of the pegs allows headers to hold well on PCBs. Even without soldering, if the engineer needs to check the component placement, he or she can take the PCB upside down without losing it. The new headers are available under P/Ns 1L-10-5Y1-XX-1-P (XX = from 02 to 20 ways) set in a variety of single row configurations with a 2.54mm pitch. The product is also 100% compatible with 2.54mm pitch Crimpflex female housings OL(H)xx, OM(H)xx and OJ(H)xx & 2SL discrete wire housings. It is manufactured of Glass filled plastic with a flammability rating of UL94V-0. In the standard series, contacts can be selected tin-plated, selectively gold-plated or fully gold-plated. Contact resistance is 20mΩ maximum with 3A of current rating per contact. Mechanical endurance is 500 operations with gold contacts. Nicomatic www.nicomatic.fr Configurable CAD models for Brushless DC motors Pittman Motors has introduced configurable 3D CAD model downloads for its entire offering of brushless DC motors. The 3D model system is an online system through the company’s website that allows an engineer to fully configure a motor with a wide variety of optional components, such as planetary and spur gearboxes, brakes, and encoders. The online 3D model system makes it very easy for an engineer to evaluate different part configurations in a virtual environment. A customer can configure a part by choosing such parameters as motor voltage, torque rating, gearbox ratio, and encoder resolution. After configuring a part as many times as necessary, the file can then be downloaded in the most commonly used CAD software file formats including Solid Works, CATIA, and Pro/E. The file also can be downloaded in a vendor-neutral format, such as an .IGS or .STP file. The system allows the creation of a fully dimensioned outline drawing generated directly from the configured CAD model. After a virtual configuration is created using the online 3D model system, a product engineer can work closely with Pittman applications engineers to create a more customized application-specific solution. Options include optimized motor windings, unique shaft configurations, various bearing systems, output devices such as pinions and pulleys, special lead wire assemblies, and various other features. Pittman Motors www.Pittman-Motors.com 48 Electronic Engineering Times Europe February 2013 www.electronics-eetimes.com


EETE FEBRUARY 2013
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