Voltage controller P_MOVOC series

The voltage controlled device is connected between drive and motor, generally and preferably near the drive The MOVOC Series is a cutting-edge solution for motion control and power conversion, specifically designed to guarantee application safety even with very high flux control range Phase Motion Control motors. Applications where the constant power range (i.e., the ratio of max speed to knee speed) exceeds 3:1– Phase units can reach up to 10:1 – could potentially generate high voltage spikes in case of drive failure. MOVOC devices, which are SIL-3 safety certified, when connected to the motor drive feed, ensure safety from overvoltage in all events. The special design and manufacturing technology of high speed TK motors allows a very wide constant power, flux controlled operating range which can exceed the ratio 10:1. This means that the motor back EMF is approximately equal to the drive maximum voltage (typically very close to the supply voltage) at the motor knee speed, i.e. at the lowest speed of the constant power range. In normal operation, at higher speeds the drive feeds the motor, which is designed to display a calibrated, critical amount of impedance, with just the right amount of Id to keep the motor voltage constant throughout the constant power range. This means that at the highest permissible speed the motor back EMF is higher than the supply voltage, intrinsically the back EMF is about equal to the supply voltage times the constant power range.