The NEMA 23, 1.8-degree bipolar step motor has an integrated controller and delivers up to 294 oz-inch of holding torque. The unit has an input voltage range from 12 to 40V dc, phase current range from 0.3 to 3.0A peak, and microstepping capabilities of 2, 4, 8, 16, 32, 64, 128, and 256x. With its integrated controller, the 23CE provides stand-alone operation without connecting to a PC. Four Kbytes of memory store up to 16 different programs. The unit has two dedicated inputs: one for an optical sensor for homing and another for switch closure to ground. Programmable items include four user-configurable digital I/O's, software-selectable hold and move currents, and fully-programmable ramps and speeds. System-level enhancements come from an optional converter card for RS485 communication and the integrated encoder with position correction capabilities that operates up to 1,250 cycles per revolution (CPR).
The rear window on Ford's Lightweight Concept vehicle, based on the Fusion model, is made with a material combination devised by SABIC that saves 35% of the weight. The car's overall weight is 25% lighter than a standard production 2013 Fusion.
Major global metropolitan areas are implementing a vast number of technology, energy, transportation, and Internet projects to make the metropolis a friendlier, greener, safer, and more sustainable place to be.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.