Motion Control

Motor Protection Circuit Breakers

The Series 330 motor protection circuit breakers from c3controls (Beaver, PA) are available with thermal and magnetic trip elements providing overload and short circuit protection, and magnetic trip element only for short circuit protection. Both units come in universal rating and markings (A, kW, and HP), as well as third-party certification markings. They meet UL and CSA standards requirements as Manual Motor Controllers for use as Motor Disconnects, and meet National Electrical Code requirements for use in multi-motor applications. Also included are visible trip indicators for fast identification of which device tripped in a control panel where multiple motor protection breakers are installed.

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DC/DC Converter

Texas Instruments (Dallas, TX) has announced the DCP010507DB, a 1-W isolated, unregulated DC/DC converter, supporting an operating temperature range of -40 °C to 100 °C. The module provides thermal shutdown and short-circuit protection, and device-to-device synchronization control for applications with multiple converters.

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Non-Contact Transducer

Balluff (Florence, KY) offers the Micropulse™ BIW transducer that uses a patented, pulsed-inductive technology. It features a wear-free, non-contact design that can be used where linear pots are used, such as plastic injection molding machines, blow molding machines, stamping presses, and hydraulic motion bases. The transducer is available with an analog 0 to 10V or -10 to +10V output. It has a >20 kHz update rate, non-linearity of ±0.02%, and resolution to 5 microns. It is available in stroke lengths from 75 to 750 mm.

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Accelerometers

Wilcoxon Research (Gaithersburg, MD) has introduced the 788A accelerometers that feature a sensitivity of 100 mV/g. The accelerometer is a single-axis sensor with an acceleration range of +50 g. High-frequency response measurements up to 10 kHz identify faults and improper machine operation. Typical noise is 4 mg at 100 Hz. The unit operates at temperatures between -50 and 120 °C. Applications include vibration monitoring of fans, motors, pumps, blowers, compressors, chillers, gearboxes, and mixers.

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Brushless DC Drive

Performance Motion Devices (Lincoln, MA) has announced the ION™ brushless DC drive, a network-connected motion control drive. The fully enclosed compact module provides network connectivity, power amplification, and motion control, and is available for brushless DC, DC brush, and microstepping motors. The module provides CANbus and serial communications, and accepts commands over the network to control trajectory generation, position loop, and current loop. The brushless DC ION controls a three-phase brushless motor using field-oriented control or sinusoidal commutation, and operates at 40 kHz with an output capability of 500 W.

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Accelerometers

The LCM 100 accelerometer from Jewel Instruments (Manchester, NH) is designed for industrial, commercial, and aerospace applications. It is engineered with micro-machined components. The 0.5G to 4.0G device meets the needs of applications requiring 500G shock resistance and up to 500 Hz bandwidth. It is suitable for use in automotive performance testing, seismic monitoring, and machine tool control and flight-testing applications.

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Piezo Motor

New Scale Technologies (Victor, NY) offers the SQL Series SQUIGGLE piezo motor that measures 2.4 × 2.4mm and features a metal/ceramic composite construction. The motor holds position when power is turned off, conserving battery life. Standard models are available in 2.4-mm and 3.4-mm sizes, with customizable shaft lengths and travel ranges. The motor features resolution better than 100 nm, speed up to 10 mm/s, and an ultrasonic design that consumes less power than miniature electromagnetic motors.

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