Rotary Position Sensors

Novotechnik, U.S. (Southborough, MA) announced industrial and redundant channel industrial versions of the SP 2800 Series rotary position sensors. The industrial version is offered in standard electrical ranges of 0° to 100, 308 or 345°, and custom ranges. It is sealed against dust, dirt, and water ingress to IP 65, and repeatability is to ≤0.03°. Independent linearity is ≤±0.3 % for 308 and 345° models. Operating temperature range is 0 to 120 °C with temporary one-hour operation at 150 °C. A two-channel electrically redundant version is available as well. Common specifications include life of >50 million operations, and mechanical range of 0 to 360° continuously. Maximum vibration is 20 g from 5 to 2,000 Hz.

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Pneumatic Cylinders

The CCL-IC series of compact pneumatic ISO cylinders from Aventics Corp. (Lexington, KY) is used in limited installation spaces requiring increased hygiene requirements. With nine bore sizes from 16 to 100 mm and maximum strokes to 500 mm, the cylinders feature smooth surfaces and light weight to ISO 21287 standards. The universal mounting concept allows installation without additional mounting accessories. The profile tube, head, and cap are made of anodized aluminum, with screws and piston rod made of stainless steel. Single and double acting, single or double rod end, and internally or externally threaded rod versions are available.

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Right-Angle Gearbox

The WPSFN right-angle planetary gearbox from Neugart (Charlotte, NC) features standard flange interface, integrated hollow shaft, spiral bevel gearing, and minimal installation height. The flange output shaft provides high torsional stiffness in turntables and other components requiring high precision and fast, cyclic operation. The gearbox incorporates a spiral bevel and helical gearing planetary stage, and operates with low vibration and backlash. It is EN ISO 9409-1-compliant, enabling the gearbox to be connected to turntables, linear units, and couplings.

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Compliance Compensator

ATI Industrial Automation (Apex, NC) offers the U1-050 Universal Compliance Compensator for use in tasks such as automated assembly, bin picking, loading and unloading machines, and robotic finishing. The unit complies in many directions to overcome misalignment between the tool and the workpiece. The patented mechanism is suited for high-endurance applications, and offers simultaneous X-Y lateral compliance, X-Y-Z axis rotation, and Z compression. The pressurized internal reset piston returns the device to a repeatable center. Stiffness can be tuned for specific payloads by varying the pneumatic pressure. It can be configured for either a PNP or NPN compliance sensor, and has an option for environmental protection.

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Electric Actuator

Curtiss-Wright's Sensors & Controls Division (Gilbert, AZ) announced the FTP215 Exlar® brand electric actuator, a high-force electric rod-style press actuator that offers forces up to 36 tf, making it a suitable replacement for hydraulic cylinders. The actuator is based on planetary roller screw technology, and features continuous force ratings to 36 tf (metric), 40 tf (short), speeds to 351 mm/sec (13.8”/sec), and stroke lengths from 150 mm (6”) to 600 mm (2”). Other features include IP65S (min.) environmental protection, pulley design for simplified motor installation and belt tensioning/maintenance, and a rigid circular front mounting flange that simplifies installation.

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Rotary Encoders

The PE18 ProxEncoder® non-contact rotary encoders from Joral LLC (Mukwonago, WI) are modeled in a threaded proximity switch housing. The 18-mm true non-contact encoders detect on-axis rotation with up to 0.5” (12 mm) air gap between the application and sensor. The encoders are encapsulated for an IP69k configuration that survives destructive conditions. Available in common communications including analog, quadrature, and CAN J1939, the units feature 0.10” (2.5 mm) axial misalignment, 30° planar tilt, and MIL-STD 202 rating for shock and vibration resistance. Available housings are anodized aluminum and stainless steel.

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Linear and Rotary Shafts

AutomationDirect (Cumming, GA) introduced SureMotion® linear shafts with surface finish of 10 RMS. Available in C1060 medium-carbon steel or 440C stainless steel, all shafts are heat-treated for additional hardness. Carbon and stainless steel shafts are available in 12, 24, and 36” lengths, and 0.5, 0.75, and 1.0” diameters. Hard-anodized aluminum supports offer shaft holding and are available in standard-height 6061 T6 black, and low-profile 6061 T6 gray aluminum designs. The removable-top design allows removal of the shaft while maintaining alignment with connected equipment during servicing. Alloy-steel fasteners are included. Hardened rotary shafts provide a surface finish of 10 RMS; models are available in diameters up to ¾” and precut lengths up to 36”. The 303 stainless steel grooved rotary shafts are available in 3” to 12” lengths, and are hardened and grooved for retaining rings with spacings to fit typical bearings.

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Stepper and Servo Motors

Applied Motion Products (Watsonville, CA) introduced a range of UL-Listed and CSA-Certified stepper motors and servo motors. The stepper motors include both single- and double-shaft versions in NEMA frame sizes 17 through 34, with torque values from 31 to 1,841 oz-in. The motors are designed to work with Applied Motion stepper drives. The servo motors include J Series models in frame sizes 40 mm through 80 mm. Units feature a 10,000-count incremental commutating encoder and an IP65 rating for the motor body.

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Signal Conditioner

The NT-C-5000 smart LVDT signal conditioner module from NewTek Sensor Solutions (Pennsauken, NJ) features built-in null indicators and front panel pushbuttons to set zero and full-scale output. Designed to work with AC-LVDTs and inductive half-bridge LVRTs, the module offers a choice of four excitation frequencies and eight analog outputs, operates LVDT sensors over a 40-dB dynamic range of AC output, indicates most common system failures, and incorporates a 2-wire RS-485 digital communications port. Other features include color-coded plug-in screw terminal connectors, auto-mastering failsafe excitation syncing for multiple units, self-diagnostics for LVDT failure or disconnect, and digital communications via RS-485 2-wire multi-drop bus.

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Motor Controller

Nanotec (Feldkirchen, Germany) offers the NP5 plug-in motor controller suitable for brushless DC motors and stepper motors. A PCI Express connector allows for easy integration into a customer-specific board. The controller can control motors with a rated current of up to 6 A via FOC, Hall sensors, or sensorless control. In addition to position, speed, and torque control, operating modes with cyclical set value specification are also available for interpolated multi-axis operation. The controller can be connected to a higher-level controller via SPI, EtherCAT, Modbus RTU, or CANopen. In addition, the controller can be programmed so that time-critical subtasks can be executed directly in the controller, independently of the fieldbus communication. The controller is equipped with 6 digital inputs and outputs, 2 A/D converters, 2 encoder inputs, and one brake output.

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Rod-Style Actuators

Tolomatic (Hamel, MN) offers the RSX, RSA, and ERD electric rod-style actuators with stroke lengths up to 1.5 m (60”) for converting motion control applications with hydraulic or pneumatic cylinders to electric linear motion. Designed for high-duty-cycle performance in demanding applications, the actuators utilize planetary roller screws in a compact package. The RSX features 1.5-m stroke length; the RSA and ERD have 1.5 m and 1.2 m, respectively. The RSX utilizes a tie-rod design, provides forces up to 30,000 lbf, and is suited for hydraulic replacement applications. The RSA HT is available in four sizes with forces up to 13,039 lbf. The stainless steel, hygienic electric actuator, rated IP60k for applications in the food and beverage market, is available with forces up to 7,868 lbf.

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Mini Vacuum Pump

Coval Vacuum Technology (Raleigh, NC) offers the LEMAX mini vacuum pump that features Air Saving Control (ASC) technology in which air is only consumed to create the vacuum and enable gripping and moving the piece. Once the regulated vacuum level has been reached, a valve closes, enabling the piece to be held without any consumption of energy. If the vacuum level drops, an air intake is generated until it returns to the initial value. The ASC analyzes the application and adapts to airtight or porous pieces in order to optimize energy use and consumption. All main functions are integrated in a single module: pressure control, pilot solenoid valves, non-clogging through-type silencer, electronic vacuum switch, M8 connector (plug-and-play direct connection), and adjustable blow-off. It can be provided with a normally closed (NC) or normally open (NO) solenoid valve.

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Motion Controller

ACS Motion Control (Bloomington, MN) released the SPiiPlusES programmable motion controller and EtherCAT Master that can be connected as a node to any EtherCAT network utilizing the standard DS402 CAN Over EtherCAT (CoE) protocol. To the external EtherCAT Master, the unit looks like a highly programmable multi-axis motor drive. The controller expands the capability of any EtherCAT automation controller to manage up to 64 axes and thousands of I/O. With up to 8 drives/axes, standard DS402 commands are used; for additional drives/axes, up to 64 DS402 manufacturer's specific commands are used. It supports distributed clock and the ability to synchronize the two EtherCAT networks. The SPiiPlus ADK software tool suite provides automatic system and network setup, axis setup, fast host and embedded application development, a built-in full simulator, remote access and diagnostics, and fast error recovery.

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Electric Cylinder

Electromate (Vaughan, Ontario, Canada) introduced the 35-mm-diameter CBL35C electric cylinder with built-in controller from SMAC Corporation (Carlsbad, CA) that controls force, position, and velocity. The cylinder also enables the direct replacement of existing pneumatic cylinders and retrofits without any machine modifications required. A Graphical User Interface allows for setup of parameters and permits the user to change product profiles on-the-fly. Features include a built-in controller; programmable position, velocity, and force; airless operation; peak force [N] up to 61; and encoder resolution of 5 μm (standard), with 1 and 0.1 optional.

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Linear Stages

ECO linear stages from Aerotech (Pittsburgh, PA) feature precision recirculating linear bearings, and can be integrated into complex machines. ECO-LM series direct-drive linear motor stages are optimized with high-precision, noncontact linear encoders that enable minimum incremental motion to 10 nm with micrometerlevel repeatability. The optional HALAR factory calibration improves positioning accuracy to ±1.5 μm. The ironless forcer coil provides high force with zero cogging. The linear motor has zero backlash, no windup, and zero friction. The stages are available in 17 different models with travels ranging from 100 to 800 mm and speeds up to 2 m/s. ECO-SL ball-screw stages with stepper motor or brushless servomotor provide electrical resolutions ranging from 0.5 μm down to sub-nm. A holding brake can be added for vertical applications. A motor fold-back kit is available for space-constrained applications to reduce the overall stage length. ECO-SL stages are available with travels from 50 to 800 mm.

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Gimbal System

Intellidrives (Philadelphia, PA) offers an integrated two-axis rotary gimbal system designed for general-purpose pointing, scanning, and tracking applications for small optics and other sensors. The system is equipped with rotary stages and provides high stiffness and load capacity for a wide variety of applications. It is motorized with high-torque NEMA 17/23 stepper motors. It can be equipped with rotary encoders mounted to the back of the stepper motor to provide closed-loop servo performance with ServoStep controllers. For applications that require 360 degrees of continuous travel, the gimbal is available with slip rings utilized on one or both axes. Other features include worm gear technology, repeatability of 30 arc-sec, maximum speed of 10 rpm, and 10-Kg load capacity. It is available with metric tapped holes for installation of additional instruments, or optional third rotary stage for roll capability.

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Absolute Encoders

The AMT21 Series and AMT23 Series absolute encoders from CUI's Motion Group (Tualatin, OR) output 12 or 14 bits of single-turn absolute position information. The AMT21 encoders feature high-speed RS-485 communication, and the AMT23 are designed with a Synchronous Serial Interface (SSI). The capacitive platform is resilient to the dirt, dust, and oil typically encountered in motion applications. Housed in compact packages with a locking hub for installation, the two series offer low current draw of 8 mA at 5 V, and accuracy of ±0.2 mechanical degrees, making them suited for battery-powered industrial, robotics, and automation applications. Both models come in either radial or axial orientations, and carry an operating temperature range from -40 to +105 °C. Designed to mate with a range of motors, the encoders are featured as a kit that contains nine sleeve bore options ranging from 2 to 8 mm, two mounting tools, and one standard and one wide baseplate with multiple pre-drilled mounting hole patterns.

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Vibration Meter

Fluke Corp. (Everett, WA) offers the 805 FC vibration meter that provides repeatable, severity-scaled readings of overall vibration and bearing condition. The sensor design minimizes measurement variations caused by device angle or contact pressure at both low and high frequency ranges. Data may be exported via USB. Overall vibration measurement of 10 Hz to 1,000 Hz is achieved for acceleration, velocity, and displacement units of measurement for a wide variety of machines. Crest Factor+ technology provides reliable bearing assessment using direct sensor tip measurements between 4,000 Hz and 20,000 Hz. Other features include a colored lighting system (green, red) and on-screen comments that indicate how much pressure needs to be applied to take measurements; temperature measurement with a Spot IR Sensor; onboard memory that holds and saves up to 3,500 measurements; external accelerometer support for hard-to-reach locations; and a large screen with high resolution for easy navigation and viewing.

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Motion Design Magazine

This article first appeared in the June, 2018 issue of Motion Design Magazine.

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