Motion Control

New Steel Enables Better Electric Motors

Jun Cui of Iowa State University’s Ames Laboratory works with a metal spinner, which rapidly solidifies metal into thin ribbons. (Photo by Christopher Gannon) In order to make plug-in electric vehicles as affordable and convenient as internal-combustion cars, their motors must be smaller, lighter, more powerful, and more cost-effective. A research team is working to develop motors with the stator core (a non-rotating, magnetic part) manufactured with thin layers of a new “electrical steel.”

Posted in: News, Motors & Drives

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Improve Encoder Performance With EtherNet/IP

As industrial automation networks go, EtherNet/IP has more than its share of advantages. It’s fast. It’s flexible. It’s easy to set up. It’s robust. Those advantages, however, come at a price. Users have to invest in infrastructure and devices certified to work with the EtherNet/IP standard.Today, EtherNet/IP is among the most popular industrial networks, and there’s no shortage of compliant devices. Consider motion control applications, for example. There are hundreds of EtherNet/IP actuators, drives, controllers and sensors on the market today.

Posted in: White Papers, Electronics & Computers, Electronics & Computers, Motion Control, Motors & Drives

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Electro-Hydraulic Motion Controller

Delta Computer Systems (Battle Ground, WA) has announced the RMC200 closed-loop electro-hydraulic motion controller that has the capacity to handle closed-loop control of up to 32 motion axes. The controller can synchronize the motion of multiple axes, enabling the construction of machines with scalable performance and quick production changeovers. It provides built-in support for controlling pressure/ force as well as position/velocity/acceleration. Through use of a programmable feature key, the controller will enable only the number of control loops that a customer’s application needs. Other features include a display screen on the CPU, I/O modules with push-in wire connectors, and fully encased, user-installable modules that “rock-in” to provide power-sequencing capability. The unit’s modular expandability enables it to support expanded control and I/O interfacing compatibility as new modules are developed.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Grippers

Airpot® Corp. (Norwalk, CT) announced GramForce™ Accurate Force Pneumatic grippers that generate no measurable friction and provide a gentle grip for delicate operations. They operate at pressures from 0.02 MPa to 0.7 MPa, and offer holding pressures as low as 0.25 N (0.056 pounds) and up to 8.6 N (1.9 pounds). With synchronous and counterbalanced parallel design that allows unchanging gripping force in any mounting orientation, the grippers are internally driven by two 5.6-mm-bore pneumatic actuators. The carriage blocks are mounted on a stainless steel rail. They have operating ranges from -20 to 80 °C. The design accommodates finger lengths up to 75 mm. Assembled, the gripper is less than 50 mm high, less than 79 mm long, and 26 mm wide. The grippers are suited for precision assembly equipment, test and measurement devices, robotic end-effectors, small parts handling, and machining operations.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Servo Drives

Advanced Motion Controls® (Camarillo, CA) announced AxCent™ servo drives for centralized motion control schemes. The Models AB15A100, AB25A100, and AB20A200 are panel-mount servo drives that operate with brushless permanent magnet motors as well as brushed motors and inductive loads. The drives are controlled with ±10V analog command signals, and use trapezoidal commutation when driving brushless motors. The AB15A100 outputs 15A peak and 7.5A continuous with up to an 80VDC bus; the AB25A100 outputs 25A peak and 12.5A continuous with up to an 80VDC bus; and the AB20A200 outputs 20A peak and 10A continuous with up to a 175VDC bus.

Posted in: Products, Manufacturing & Prototyping, Motors & Drives

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Hollow Shaft Encoder

Kübler (Charlotte, NC) released the Sendix F5883 Motor-Line optical hollow shaft encoder with a mounting depth of 43 mm. The encoder is based on the Sendix platform, and features Intelligent-Scan Technology . It is insensitive to magnetic fields, offers EMC characteristics, and supports interfaces such as SSI, BiSS, SinCos, RS422, and Push-Pull for connection to frequency converters. The encoder is resistant to installation errors, shock, and vibration. It is available with a through hollow shaft of up to 15 mm, and clamping on the A and B side for all usual geared motor drive shafts. With a tangential cable outlet, the encoder can be installed in tight mounting spaces.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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AC Drive

Danfoss Drives (Milwaukee, WI) introduced the VACON 20 AC drive that features built-in PLC functionality. It is available in all common voltages (110- 600V), and a power range up to 18.5 kW/25 HP. The built-in RS-485 interface offers a serial control interface for the drive. With optional modules, the drive can be connected to almost any communication system including CANOpen, Fieldbus, DeviceNet, and Profibus DP. Features include accessible terminals, built-in DIN rail mounting, and the MCA parameter-copying tool that can clone settings without main power in the drive. Users can build their own control logic in the drive, and utilize unused I/O of the drive for performing other machine-related tasks. In addition, the parameter list can be freely modified, and application-specific parameter sets and default settings can be created.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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White Papers

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Improve Encoder Performance With EtherNet/IP
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From The Design Lab: An Insider’s Guide To Laser Sintering
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