Motion Control

Rotary Actuator

Oriental Motor (Torrance, CA) has introduced the DGII Series hollow rotary actuator that uses an AR Series closed loop motor. In addition to the pulse input type package, a built-in controller (stored data) type package with I/O, Modbus, or EtherCAT (via a gateway converter) communications is also available. Both types come with a 3-m (9.8-ft.) cable. The actuator offers reduced power consumption and heat output, and the large-diameter hollow hole (through-hole) helps to reduce the complexity of wiring and piping.

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Slotless Motor

Koford Engineering (Winchester, OH) offers a 6,300-rpm, hollow shaft, 48-mm-diameter, slotless, 2-pole motor with a shaft bore size of .400". The motor is designed for low temperature rise and low operating current (.06 amps at 12v for 6,300 rpm). The cogless design results in smooth rotation. Applications include optics, filter, beam choppers, and any application where access through the center of the motor is required. Matching sensorless drives are also available.

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Servo Controller

PI (Physik Instrumente) LP (Auburn, MA) offers the C-884 4-axis digital servo controller for motorized linear translation stages and rotary positioners with very high accuracy and repeatability. The high-speed encoder interface allows the use of direct-metrology linear and angular scales with resolutions down to the nanometer and microrad realm and below. The controller is equipped with a dual-core architecture for fast servo handling and command interpretation. Software tools are provided, including PIMikroMove software that does not require writing code.

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Actuator

BEI Kimco Magnetics (Vista, CA) has released the Moving Magnet voice coil actuator series. When combined with smart drive electronics, the actuator can be controlled for speed and desired output force. Moving magnet actuators are designed for applications that require moderate speed and controllable, gentle stop points including remotely controlled circuit breakers, medical hand tools, and other delicate instrumentation. Unlike standard voice coil actuators where the magnet assembly is intended to remain fixed while the coil assembly moves, these actuators are designed to use a stationary coil.

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Linear Motors

Applimotion (Loomis, CA) offers LARC (Linear Arc) motors for large-diameter applications greater than 1 meter in diameter. The modular nature of the motors allows them to integrate with large assemblies for scanning, imaging, and metrology applications where size requirements take priority over high-torque requirements. LARC motors come in modular pieces and bolt into any large-diameter servo motor application. The motors operate from standard brushless motor amplifiers from 24 to 30V. They work with encoders, resolvers, or magnetic encoders for directdrive applications. The motors offer a low-profile design to fit into tight spaces. Hermetically sealed magnet tracks and coil assemblies are available for vacuum or special environments.

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Position Switches

AutomationDirect (Cumming, GA) offers the NITRA® line of position switches for pneumatic cylinders, including round, dovetail, t-slot, square, and D-shaped. Additional dovetail accessories are available to accommodate larger dovetail slots. The solid-state electronic switches are available in normally open, 3-wire DC PNP and NPN configurations, and can be purchased with an M8 wiring connector or 3-meter integral cable with wire leads. Mounting bands with adapters for round body cylinders are available ranging from 1/8" to 4" sizes.

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Rotary Position Sensor

Piher Sensors & Controls (Chicago, IL) has introduced the MTS-360 Mechanical Mount rotary position sensor with integral PCB. Designed with the sensor directly mounted onto a PCB, the package allows engineers to install a rotary sensor without designing a printed circuit board for the sensor. The assembly is available with either 6-pin (dual output) or 3-pin (single output) Molex 90119 Series mating connectors. The assembly can be secured with three standard M3 screws.

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Vibration Isolator

Minus K Technology (Inglewood, CA) has released the CM-1 compact, high-capacity, low-frequency, negative-stiffness isolator designed to support heavy payloads while reducing low-frequency vibrations. The isolator comes in several capacity ranges to match vibration-sensitive instruments such as SPMs, micro-hardness testers, profilers, interferometers, electron microscopes, or other imaging systems, for weight loads from 50 to 800 pounds. The isolator delivers a vertical natural frequency of 1/2 Hz or less, which can be achieved over the entire load range. Horizontal natural frequency is load-dependent. The unit is completely passive, using no air or electricity, and can be combined into multi-isolator systems to support heavy payloads. They can be placed on pedestals to bring them to an appropriate height to retrofit existing air tables.

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Rotary Position Sensors

Bourns (Riverside, CA) has introduced the Bourns® Model AMS22U and Model AMM20B non-contacting rotary position sensors for rugged environments. They utilize magnetic Hall Effect (HE) technology, and are designed for pneumatic control valve position feedback, actuator motor position feedback, lift/shuttle suspension systems, and tilt control feedback. The Bourns® Model AMS22U is a single-turn, non-contacting rotary position sensor that offers a rotational life of up to 100 million cycles, and features a 1/8" shaft supported by dual ball bearings and a factory-programmable electrical angle from 10 to 360 degrees. The Bourns® Model AMM20B is a multi-turn, noncontacting rotary position sensor that features a rotational life of up to 50 million cycles. It features a slim profile for space-constrained applications, 12-bit resolution, and a factoryprogrammable electrical angle from 1080 to 3600 degrees.

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Controllers

The Simatic S7-1500 controllers from Siemens Industry (Chicago, IL) feature integrated motion control, security, and safety functions, as well as a color display. The controllers feature a backplane bus with a high baud rate and efficient transmission protocol, and have have two built-in, standard Profinet interfaces. The largest controller in the line has an additional Profinet interface onboard with a separate IP address, allowing network isolation to integrate into the corporate network.

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