Motion Control

Stepper Motor Driver

Lin Engineering (Morgan Hill, CA) offers the R1025 stepper motor driver that can be used with stepper motors ranging from NEMA 8 to NEMA 42. The driver is capable of output currents ranging from 0.8 to 10 amps peak while handling 12 to 80VDC of input voltage. With selectable step resolutions from full stepping to 256x microstepping, the driver is capable of stepping a typical 1.8 degree motor over 51,000 steps per revolution. It features a small footprint and accessible mounting holes. The driver includes three selectable damping modes, as well as onboard DIP switches, eliminating the need to connect it to a computer.

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DC Compressor

Designed for air seats, light-duty air suspension, and other mobile applications, the Thomas 135 Series DC WOB-L® compressor from Thomas Division, a Gardner Denver Company (Sheboygan, WI), is a compact, lightweight intermittent-duty pump. The compressor is 1.16 pounds and 3.6 × 1.66 × 4.34". Avail able in 12V or 24V, the compressor features an oil-less piston and cylinder, stain tless steel and silicone valves, and a built-in inlet filter. All models are balanced for low-vibration operation, and are dust- and moisture-resistant.

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DC Accelerometer

Measurement Specialties (Hampton, VA) has introduced a rugged, triaxial DC accelerometer for steady-state, low-g vibration measurements and high-g transient shock measurements. The piezoresistive, MEMSbased Model 3803A provides triaxial measurement under harsh operating conditions. Hermetically sealed in a welded, stainless steel housing, the IP65-rated sensor is used for testing applications in harsh, high-performance installations. The unit is offered in dynamic ranges from ±2 g’s to ±2,000 g’s, and is gas-damped to provide a wide frequency response across all three axes. The unit’s MEMS sensing elements include overrange stops for protection to shock levels greater than 5,000 g.

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Encoders

Heidenhain Corp. (Schaumburg, IL) offers the Leine & Linde DRIVE-CLiQ encoder platform for operation in harsh drive environments where they are exposed to vibration, shock, and mechanical loads. The encoder can be installed to the motor mechanics typically found in heavy-duty applications without any adaptation needed. DRIVE-CLiQ is Siemens’ communication protocol for motor feedback in a SINAMICS drive system. It is an Ethernet-based interface for connection of different kinds of components like motors, frequency converters, and encoders.

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Torque Transducers

HBM (Marlborough, MA) offers the T40B and T40FM torque transducers that include an integrated speed measurement system. They are designed to work in harsh environments such as those that contain humidity, condensation, dust, oil, and grease. The transducers take measurements based on the contactless sensing of an anisotropic magnetoresistive (AMR) sensor, so the transducer signal is more stable than that of an optical system. The transducer integrates both the magnetic technology and the speed measurement sensor.

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Linear Actuators

Zero-Max (Plymouth, MN) offers Roh’lix® linear actuators made from stainless steel for use where cleanliness is a priority. Used to convert rotary motion to linear travel, the actuators carry loads at speeds up to 70 inches per second, depending on size. Stainless steel components make the actuators suitable for food, drug, packaging, and similar applications where cleanliness and frequent system wash-downs are required.

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Linear Motor Stages

The PlanarDL-series stages from Aerotech (Pittsburgh, PA) are available in nine different travel and performance configuration applications ranging from high-accuracy surface profilometry to high-speed semiconductor and LED wafer scribing. The PlanarDL XY design allows for use in applications where straightness and flatness of motion are critical. Capable of achieving 1 m/s velocities and 1.5 g accelerations, the stages enable high-throughput and the company’s proprietary directdrive technology.

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