Products

Variable Frequency Drives

AC Technology, a member of the Lenze Group (Uxbridge, MA), has introduced the SMVector drive, featuring a power range of up to 20 Hp. Four modes (v/Hz, enhanced V/Hz, vector speed, and torque), high starting torque, auto-tuning, low-speed control, and dynamic speed regulation are provided. The unit’s input voltage ranges from 120 VAC 1-phase to 600 VAC, 3-phase. The drive also includes an Electronic Programming Module, which is the drive’s memory in a removable chip, allowing users to program multiple drives quickly.

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Servo Converters

The KE/KW series of digital intelligent servo converters from AMK Drives and Controls (Richmond, VA) is comprised of infeed and modules in the power range up to 60 kVA. A compact system, the unit measures 170 × 320 × 160 mm. Using coldplate cooling, power losses in the control cabinet are reduced by placing the unit on a cooled backplane. Up to 32 synchronous servo axes can be controlled for each infeed module, allowing freedom to position the modules.

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High Resolution Actuators

PI L.P. (Auburn, MA) introduced NEXLINE®, a high-force, sub-nanometer resolution linear actuator for telescopic precision. Based on the PiesoWalk® drive principle, the all-ceramic, high stiffness actuators provide pushing/holding forces to 600 N and a resolution better than 0.1 nanometer. They can be run in analog mode for active vibration cancellation and dithering and can operate in magenetic fields or in vacuums. Standard NEXLINE® actuators up to 20 mm are available, although custom and OEM units are feasible.

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Linear Guide Systems

LM76 (E. Longmeadow, MA) offers the Speed Guides™, two series of high-speed, compact linear guide systems. The Speed Demon OSG type and Speed Demon SG type linear guide systems are ideal for used in X, Y, or Z axes, and are designed for speeds up to 10 m/sec., accelerations to 50 m/sec.2, and loads up to 5600 N. The OSG systems are available in five rail and block sizes. Rails feature pre-drilled mounting holes, dual RC60 steel shafting in lengths up to 4 meters, and can be cut to size. Each OSG block features 4 dual-contact roller bearings with two bearings on eccentric mounts. Running straightness is ±0.02 mm regardless of system length. Integral felt wipers, high angular dual contact bearings, and corrosion resistant materials permit installation in a broad range of adverse environments. Shafting options include RC60, 440C, and chrome plating.

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Cable Assemblies

W.L. Gore & Associates (Elkton, MD) has introduced Gore™ Eye-Opener® DensiShield cable assemblies to transmit high-speed differential signals while reducing size and weight. A short cable exit and lightweight cable allow a tighter fit between the chassis panel and door. The high-speed cable incorporates ultra-low-dielectric materials.

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Motion Control ICs

Performance Motion Devices (Lincoln, MA) released the Magellan™ family of motion control ICs. They provide smooth stop, abrupt stop, and system disable, and are available for DC brush, brushless DC, microstepping, and step motors. A hardware trace buffer can store four performance-related values chosen from over 28 recordable variables. Selectable variables include position servo lag, motor output, servo integral, and commutation angle, among others. Collected data can be analyzed to determine increases in machine wear or vibration, or whether other user-defined or performance-related conditions have occurred. Magellan’s automatic machine monitoring system handles conditions such as motion error, positive and negative limit switches, position breakpoints, and commutation monitoring. Other features include a programmable PID filter with velocity and acceleration feed forward, 32-bit position error, dual biquad filters, and multi-chip synchronization.

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Rail System

From LEE Controls (Piscataway, NJ) and designed for automated production lines, CNC machines, power transmission, and other linear motion applications, the SBC Profile Rail System incorporates linear guide rails and blocks and is available in two ranges for high load capacity and two ranges for ultra-high-load applications. Rail lengths up to 4000 mm are available. A seal protects the ball bearings within the guide block and lubrication can be provided through a grease fitting. Available accessories include side grease fitting for obstructed applications, bellows to prevent dust and debris from impairing travel, and scrapers to remove contaminants from high-temperature machining operations.

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