Encoder

The AI25 hazardous series AI25 encoder from Dynapar (Gurnee, IL) is suited for Class 1 Division 2 applications where a Zone 1 or Division 1 encoder may have previously been specified.

It features both BiSS and SSI communication protocols and is available in both shafted and hub-shafted mounting designs. It features a compact form factor with pre-certified 30’ PLTC cable assembly and up to 34 bits of total resolution (22-bit ST and 12-bit multi-turn).

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Positioning Stage

H2W Technologies (Santa Clarita, CA) introduced the VMS06-008-LB-01 high-acceleration, voice-coil-driven positioning stage with a sliding contact bearing system.

An electromagnetic circuit design allows a minimal cross-section of 1.20” (30.5 mm) by 1.00” (25.4 mm).

The stage has a 0.60” (15.2 mm) stroke and generates 1.12 lbs. (5.0 N) of continuous force and 3.36 lbs. (15 N) of peak force.

Each axis is guided by sliding contact bushing assemblies. It includes a one-micron resolution magnetic linear encoder.

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Motor/Actuator

Curtiss-Wright Industrial Division (Christ-church, UK) released the Exlar® GTX100 integrated motor/actuator that incorporates inverted roller screw technology. High power density and compact form factor make it a suitable replacement for hydraulic cylinders.

The actuators feature continuous force ratings up to 15,392 N (3,460 lbf), speeds up to 953 mm/sec (37.5 in/sec), and standard stroke lengths from 150 mm (5.9”) to 300 mm (11.8”).

Other features include integration into most leading motion control architectures.

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Guide/Encoder

THK (Schaumburg, IL) offers the Type SHS-LE that integrates a THK Type SHS LM guide with a THK linear encoder (linear position sensor). In the Caged Ball LM Guide, each row of balls is arranged at a contact angle of 45°, enabling it to be used in all directions. The guide features THK Caged Technology that employs a synthetic resin cage with a patented curvature that cradles each ball and separates it from the next. The spaces between the rolling elements act as a lubrication system.

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Incremental Encoders

CUI Motion Group (Tualatin, OR) introduced the AMT13 series of incremental encoders that supports motor shaft sizes from 9 to 15.875 mm (5/8”).

The encoders offer 22 programmable resolutions from 48 to 4096 PPR, CMOS voltage or differential line driver outputs, and low current consumption of 16 mA at 5 V.

Available in radial or axial orientations, the encoders are housed in a 42.3 × 42.3 × 13.5 mm package and offer an operating temperature range from -40 to +125 °C.

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Position Sensors

Novotechnik U.S. (Southborough, MA) introduced the TM1 Series of magnetostrictive linear hydraulic and pneumatic position sensors. A magnetic ring-shaped marker is affixed to a moving cylinder and moves up and down the sensor rod without contact. Stroke lengths are from 50 to 2,000 mm in 25-mm steps. Both plug-in and screw-type flange models are available. Other features include absolute linearity of “0.04% F.S. (min. 0.3 mm) and repeatability of "±0.1 mm. Output options include 4 to 20 mA current as well as voltage output of 0.25 to 4.75 V, 0.5 to 4.5 V, or 0.1 to 10 V.

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Motors

Allied Motion Technologies (Amherst, NY) released KinetiMax™ high-power-density motors. The outer-rotor brush-less motors are designed for high-torque, low-cogging applications. The motors are available in compact stator-rotors sets in six frame sizes with three stack lengths per size and three windings per stack length. The motors also feature a large stator bore that allows cabling to easily pass through for applications such as robotic joints.

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Inductive Angle Encoder

The Zettlex IncOder™ inductive angle encoder from Celera Motion (Bedford, MA) uses non-contact, inductive technology for precision angle measurement. The encoder features a stator and a rotor, each shaped like a flat ring. The large bore accommodates through-shafts, slip rings, optical fibers, pipes, or cables. The stator contains the electronics to receive power and generate an output signal. The encoder does not require special couplings and the rotor and stator can be screwed to the host product. Hardanodized aluminum alloy housings and monolithic constructions are used throughout.

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Slip Ring Motor

Siemens (Munich, Germany) announced the Simotics HV M slip ring motor with a power range up to 4.5 MW. The motor is designed and dimensioned for applications with high load inertia and low starting current requirements. In high-torque applications, the motor reduces the mechanical stress on the complete installed equipment. The motor design is based on a modular platform concept, with lower weight but increased housing rigidity. Service openings all around allow easy access to the interior.

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Gearboxes

The IronHorse® HBR series of helical bevel gearboxes from AutomationDirect (Cumming, GA) combines the helical gearset with a bevel gearset to create an output that is perpendicular to the input. The gearboxes are hollow shaft output and accept double or single shafts. The universally interchangeable design provides flexible installation with C-face and TC-face inputs, perpendicular output, and six mounting positions. Five gearbox sizes support 56C up to 254/6TC NEMA motor frames. Six ratios are available from 10:1 to 120:1.

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Inertial Measurement Systems

Silicon Sensing Systems (Devon, UK) offers the all-silicon RMU30 and IMU20 inertial measurement systems for space applications. The RMU30 combines below one-watt power consumption with performance comparable to much larger and higher-consumption fiber-optic-based gyro systems. The 3-axis microelectromechanical systems (MEMS) device incorporates three sensor heads. The IMU20 industrial-grade IMU can withstand extremely high-shock environments and combines three gyros with MEMS capacitive accelerometers.

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Motion Design Magazine

This article first appeared in the February, 2020 issue of Motion Design Magazine.

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