Someone runs a motor at between 75% and 100% of rated speed, but what happens if he overdrives by 150% by setting the variable frequency drive (VFD) at 90 Hz, rather than 60 Hz.? My knee-jerk react
Nord Drivesystems has released a variant of its Nordac SK500 family of frequency inverter drives incorporating sophisticated position control capabilities The P
BSM R-series ultra-compact brushless AC servo motors are designed to offer machine builders a high-performance, low-maintenance alternative to stepper motors and DC servos, according to Baldor. Capable of delivering peak torques of up to 33.63lb-in (3.8Nm), combined with other dynamic performance attributes of servo motors such as fast acceleration, BSM R-series motors are packaged in small 1.6- and 2.4-inch (40 and 60mm) square bodies. Special construction features employed in the motors produce virtually “cog free” action, claims Baldor, providing very smooth motion at slow speeds. Available with either one or two winding stacks, the motors provide a selection of continuous stall torque ratings from 1.4 to 11.24lb-in (0.16 to 1.27Nm), and peak torques from 4.25 to 33.63lb-in (0.48 to 3.8Nm). The smallest one-stack motor measures 1.6 inch square by 2.32 inches (40 x 59mm) long, and weighs just 0.88 pounds (0.4kg). Power and feedback connections to the motors are made by long flying leads.
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