Omron Electronics LLC has introduced 3 new high-performance AC drive series that, it claims, help machine builders and plants achieve energy savings in
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
Trust Automation has introduced the compact, low cost, programmable TA2230 constant velocity drive. The TA2230 drive is designed to run a brushless motor at a constant velocity using the motor's Hall sensors for the velocity feedback. Using an RS232 interface the drive can be programmed at start-up to ramp up at a preset rate and maintain a constant velocity regardless of changes in load. This compact brushless motor drive with the optional cooling fans measures just 9.3 in. X 3.5 in. X 5.7 in. Motor output from the drive with an AC supply of 100-220 VAC @ 50/60 Hz , 25 Amp peak current is the equivalent of a 15,000 Watt (45 Amp peak) PWM drive. The DC voltage is 0-330 VDC at 45 Amp peak, 20 Amp RMS continuous. Features of the TA2230 drive include three speed setting options: 1 - (Ext) external speed command via off-board 10K potentiometer, 2 - (Int) on-board potentiometer for convenient fixed speed adjustment, and 3 - (Soft) fixed speed set via software; as well as soft start control, integral AC line filtering, and self-contained, enclosed, and optically isolated user interface for safety. Some of the software configurable parameters include: Enable input level, Fault output level, Coast input level, Target velocity, Hall active level, and Current limit.