Turn-on point
Routing a current-carrying wire through the opening, engineers can observe current flow simply and instantaneously to determine, for example, if a motor is properly loaded, a bank of heaters is running properly, or a power bus is about to trip.
The wire passing through the center of the toroidal current transformer induces voltage that is applied to a built-in circuit, which controls the voltage applied to the LED. A factory-installed resistor within the circuit determines the user-specified current limit. Depending on setup, when the voltage through the resistor reaches the turn-on point, a green or red LED lights up.
The indicator is unaffected by external magnetics, uses safe class-2 circuitry, and the standard unit with 11-inch wire leads costs only $4.00 in quantities of 1,000.
Dave Forsythe, CR Magnetics Inc., 544 Axminister Dr., Fenton, MO 63026; Tel: (636) 343-8518; Fax: (636) 343-5119; E-mail: sales@crmagnetics.com.
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Motor+amp+controller
Traditional external controllers require connection to feedback devices such as encoders for accurate positioning and speed control. Electromagnetic fields can effect signal integrity in long cables connecting encoders to controllers driving up cost, complexity, and consequently sacrificing reliability. Series 3564-BC totally integrated brushless dc motor, amplifier, and full function motion control module solves such problems by combining the motor, feedback, controller, drive, and thermal protection into a single package.
Combining proven coil technology, precision machining, molding, and miniaturization expertise with single-chip microcomputers, linear Hall sensor technology, new control algorithms, and precise digital filtering techniques, the miniature motion system offers a full range of motion and power processing.
Steve O'Neil, MicroMo Electronics Inc., 14881 Evergreen Ave., Clearwater, FL 33762-3008; Tel: (800) 807-9166;
E-mail: steveo@micromo.com.
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Unibody X-Y
slide
Using conventional pneumatic components to construct an X-Y actuator assembly requires interface plates, and tedious assembly and alignment procedures. If multiple stops are required along its travel, alignment is even more critical to maintain a consistent distance between the tool plate and work area. A unique single housing design for dual-slide applications solves such problems, simplifies assembly, and maintains tolerances close to that of electronically actuated systems.
The compact uniblock design with integral cylinders achieves two axes of motion with a single housing. It eliminates interface plates between each axis, reduces space requirements, improves reliability, and achieves greater speeds due to reduced moving mass.
Add options such as cable carriers, shock absorbers, sensors, stop collars, and linear ball bearings to the standard magnetic cylinders, air cushions, case-hardened shafting, U-cup cylinder seals, multiple mounting surfaces, and black anodized housing to get a bolt-on pick and place system.
Ronald Nollet, Precision Pneumatics, 2071 Ninth Ave., Ronkonkoma, NY 11779; Tel: (888) 579-4350; Fax: (631) 467-2117; E-mail: sales@precision-pneumatics.com.
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