ARCUS TECHNOLOGY/RENISHAW

The ARCUS DMX-K-SA-11 stepper motor is an all-in-one microstep motor with driver, controller, and encoder integrated into the motor’s back cap, minimizing external electronics and wiring. The motor uses Renishaw’s OnAxis AM256 magnetic encoder chip for real-time position verification. The small package size of the magnetic chip encoder allows the motor to stay within the 1.1-in.-square form factor of the NEMA 11 standard. The integrated DMX-K-SA-11 is a 16-microstep driver that is capable of full, 1/2, 1/4, or 1/16 microsteps in three different stack sizes. It was developed as an alternative to typical step motors that run open loop with sensors to detect position values after the move. The DMX-K-SA-11 was designed for applications that require a position verification signal from the motor. By incorporating the Renishaw AM256 magnetic encoder chip into the back cap, ARCUS was able to add this capability with no change in size or add-on external components or encoders. Renishaw’s AM256 8-bit chip encoder is a solid-state, compact magnetic solution for noncontact angular position encoding over 360 degrees, providing incremental, parallel, serial SSI, and analog sinusoidal output options.

For more information, visit: www.arcus-technology.com or www.renishaw.com

BISON GEAR & ENGINEERING

The VWDIR134 DC gearmotors are 90 V parallel-shaft, permanent-magnet brushed DC gearmotors with continuous torque ratings from 30 to 500 in-lbs. (3.4 to 56.5 N-m), available with 1/10 or 1/11 HP (74.6 W or 67.8 W). The compact, integral gear reducers feature hardened steel helical and spur gearing for efficiency and durability, with ratios ranging from 10:1 to 266:1 and corresponding fixed-output speeds from 152 RPM to 6 RPM. The gearmotors feature built-in face mounting, compatible with Von Weise Genesis mounts, and offer overhung load (OHL) capability of 300 lbs. (136.4 kg.). For added versatility, these gearmotors also accept the new Bison TightDrive speed control option that enables machine builders to put the control, power and gearmotor more conveniently at the point of use, while saving installation time and reducing costs.

For more information, visit: www.bisongear.com

BODINE ELECTRIC CO.

A selection of low-voltage products includes 12 V permanent magnet DC (PMDC) gearmotors, motors, and DC motor speed-control for continuous duty OEM applications. These compact and cost-efficient products provide the predictable performance required for low-voltage, battery-powered, remote-location, or solar applications. The 12 V PMDC gearmotors and motors are available in both 24 A- and 33 A-frame motor sizes. They can be built in combination with most of Bodine’s parallel-shaft, hollow-shaft, or right-angle gearheads, with gearmotor output speeds from 5.6 RPM to 660 RPM. Horsepower extends from 1/50 HP to 1/8 HP (93 W), and the motors are able to generate up to 310 lb-in (35 Nm) of torque. Higher output ratings are possible for intermittent duty applications. Custom models are available with encoders installed, special output shafts, cords, and customer-specific mounting configurations. The WPM–12 VDC speed control is ideal for low-voltage applications that require basic, single-direction speed control. The pulse-width-modulation (PWM) speed control provides cool motor operation, long brush life, lower audible noise, and a wide speed range.

For more information, visit: www.Bodine-Electric.com

LCR ELECTRONICS

Digital PWM (pulse-width modulation) motor controls incorporate H-bridge circuitry with high-speed switching to produce precise speed and torque control, bi-directional operation, and overload protection. They are available in battery-powered and AC-line powered versions. The high-voltage EC104 and the low-voltage EC106, with control methods for either two or four quadrant operation, are adaptable to many different DC brush, shaded-pole and PSC motor applications. Onboard potentiometer and switch input options are provided for easy human interface. For applications requiring uni-directional DC brush motor operation, the controls can also be simplified to eliminate unneeded components and keep costs low. Other factory-installed options are parking brake, coast, open-loop control (coarse control without feedback) or closed-loop control (+/-2 percent RPM using feedback), and soft start to extend motor life. Both the EC104 and EC106 boards can operate as a single-phase, variable-frequency drive to adjust motor speed, making them ideal for use with AC motors with high starting loads and in-rush limitations.

For more information, visit: www.lcr-inc.com

LSI/CSI

Three high-performance stepper motor controller ICs (LS8297, LS8297CT, and LS8397) can serve as less expensive replacements for the L297 in all applications, while providing additional features not available in the L297. The three devices offer half-step and full-step sequences in both normal drive and wave drive modes similar to the L297. In addition the LS8297CT and the LS8397 offer correction for the torque-ripple. A power saving holding-torque mode is also available in LS8397 for maintaining the drivers at a reduced power level when the motor is not turning. Four phase outputs and two inhibit outputs are provided for driving external H-bridge drivers, allowing for the selection of a standard driver, such as the popular L298 or an application specific custom driver. An external reference voltage, in conjunction with the winding current sense voltages, regulate the PWM duty cycles of the driver outputs. One of two decay modes, fast-decay and slow-decay, can be selected to suit the characteristics of the motor winding.

For more information, visit: www.lsicsi.com

MAXON PRECISION MOTORS

The EC 9.2 flat motor has an outer-rotating rotor, enabling the drive to offer high nominal torque, smooth running, and minimal size, making it ideal for space-constrained applications. The motor has dimensions of 10 mm x 12.5 mm, yet offers a nominal torque of up to 0.83 mNm and a stall torque of up to 1.29 mNm. The outer diameter includes a protective cover that protects against contact and also serves as a mounting aid during installation. The motor is equipped with an 8-pole neodymium permanent magnet and preloaded ball bearings with an option for sintered sleeve bearings. The motor is available in Hall sensor and sensorless versions. When employed in combination with planetary gearheads, generally less reduction stages must be calculated due to the motor’s high nominal torque.

For more information, visit: www.maxonmotor.com

PORTESCAP

The Athlonix high power density, brush DC motors are high-efficiency endurance motors designed to deliver unrivaled speed-to-torque performance in a compact, lightweight package (15 g to 53 g depending on frame size) with output power up to 9 W. The motors feature an energy-efficient coreless design with an optimized self-supporting coil and magnetic circuit that delivers maximized power density and sustained endurance over the life of the motor. They are available in 12 mm, 16 mm, and 22 mm frame sizes. The proprietary self-supporting coil yields maximized magnetic flux and turn-density for a given diameter. The optimized coil design leads to a low motor-regulation factor with energy efficiency approaching 90 percent, depending on the motor load conditions. With such high efficiency, users benefit from increased performance over the life of the motor. Additionally, less power-draw helps facilitate reduced cost-of-ownership with increased value-in-use for the end user.

For more information, visit: www.portescap.com

SCHNEIDER ELECTRIC

The Altivar 12 is a variable-speed AC drive that delivers flexibility, performance, and energy efficiency in a compact, easy-to-use design. The drive offers exceptional starting and stopping motor performance, which eliminates the need to oversize the drive or add dynamic braking in most applications. It has an intuitive user interface that simplifies programming and reduces start-up time and contains a new generation of components that are designed to provide a 10-year service life or more even under less-than-ideal operating conditions (based on MTBF data). In addition, the drive has a small, attractively designed product exterior that is suitable for consumer machines. The design can handle a wide range of power disturbances, enabling it to continue running despite minor transient voltage sags and surges, promoting system reliability. Potential applications include HVAC, foodservice equipment, pool and spa pumps, fitness equipment, and medical devices.

For more information, visit: www.schneider-electric.us