Motion Control

Motor Drive Transistors

International Rectifier (El Segundo, CA) has introduced a family of 600V insulatedgate bipolar transistors (IGBTs) for motor drive applications operating below 10 kHz, including compressors for refrigerators and air-conditioners. The Gen7 F devices employ punch-through Trench technology to deliver high power density, and the ability to optimize conduction and switching losses for a specific frequency of operation. They offer smooth switching to reduce EMI and overshoots, and are short-circuit-rated for motor drive applications. The IRG7RC10FD and IRG7IC30FD are co-packaged with a soft recovery diode, while the IRG7SC12F is a single IGBT that allows the designer to choose a specific diode for the application.

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Motion and Automation Control

Kollmorgen (Radford, VA) offers the AKD PDMM that combines a multi-axis motion controller, IEC61131-3 soft PLC, EtherCAT® master, and AKD® servo drive in a single, compact package. The system is suited for applications in printing, packaging, converting, and medical, as well as other automation applications where precise synchronization of multiple axes of motion is vital. It is fully programmable through the KAS Integrated Development Environment (KAS IDE), providing an automation solution that is scalable from a single axis up to 128 axes with a single controller. Features include the ability to master seven or more additional axes over an EtherCAT network, plus additional EtherCAT connected devices such as I/O and MODBUS-connected devices such as HMIs. Kollmorgen Automation Suite is a complete machine automation solution comprised of software, motion components, and engineering services. It simulates the machine’s operation in advance of connecting all components.

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Rod-Style Actuators

ERD electric cylinders from Tolomatic (Hamel, MN) are available with a reverseparallel motor mount that makes a more compact package. The motor is mounted in parallel with the actuator instead of inline, which reduces the length of the total package and, with the addition of a rear clevis pivot mount, provides greater versatility in mounting the actuator. The ERD is a rod-style electric actuator designed as an alternative to pneumatic cylinders, and as an option for automating manual processes. The products are suitable for product changeovers, pick-and-place, pressing, diverting, and heatstaking/ sonic welding. The actuators can be built in stroke lengths up to 24" (609.6 mm). The cylinders are available in four body sizes that are approximately equivalent to 5/8" (15.9 mm), 1" (25.4 mm), 1.5" (38.1 mm), and 2" (50.8 mm) bore pneumatic cylinders. They are available in stroke lengths from 8 to 24" (203.2 mm to 609.6 mm), and forces up to 500 pounds (2,224 N). They are compatible with most NEMA and metric mount stepper and servo motors.

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Linear Positioning Stages

Mini-MAG precision linear positioning stages from Dover (Boxborough, MA) are available with a complete controls package. Users can combine a Mini-MAG linear motor stage with a board-level, single-axis servo drive for integration into a control cabinet, or a Kollmorgen AKD™ servo drive for single- or multi-axis applications with a graphical user interface for setup and programming, and realtime performance feedback. Both options provide Ethernet communication for data acquisition.

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Linear Actuator

BEI Kimco Magnetics (Vista, CA) has introduced the Model LA100-93-000A high force linear actuator with a peak force of 500 pounds. It features a continuous force of 292 pounds with 2" total stroke. Other features include semi-housed construction with built-in shaft and bushings that orient the coil assembly concentric to the field assembly. The unit measures 10" in diameter and 9.3" long at mid-stroke. The LA100 is suitable for use in applications that require an actuator force of 500 pounds and high speed.

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Brush Motors

Crouzet, a brand of Custom Sensors & Technologies (San Diego, CA), has introduced the DCmind Brush range of direct-current brush motors. The motors, even under full load, offer a range of gearboxes and accessories. The new motors have a noise level of 35 db. The motors are available in 15-, 25-, and 55-Watt configurations with a 42-mm diameter, and 55 and 104 Watts with a 63-mm diameter. They support 12, 24, and 48V power supplies.

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Servo Control System

The MESA 7I77 card set from Mesa Electronics (Richmond, CA) is a FPGA-based, 6-axis analog control system for CNC, industrial automation retrofits, and OEM systems. Six axes of analog outputs and encoder inputs are sufficient for up to 5-axis machines plus spindle control. Encoder inputs are individually programmable for TTL or differential mode. The PCI or PCIE host interface provides real-time access to the motion hardware. In addition to the motion-related I/O, 32 digital inputs and 16 digital outputs are provided. These digital I/O points are isolated from the system ground and can use 5V to 32V I/O voltage.

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