The VW3AE0641 is a sinus filter accessory for Schneider Altivar floor-standing enclosures with separate air flows or the compact version, part of the Altivar 61 Plus and Altivar 71 Plus drive ranges. It sits in the protection accessories category and is designed to condition the motor voltage waveform from the drive output, reducing motor heating and bearing currents on long cable runs.
Schneider lists the VW3AE0641 as obsolete.
What It Does in the Drive System
A sinus filter sits between the drive output and the motor. It converts the PWM voltage waveform into a near-sinusoidal shape, which drops the voltage peak at the motor terminals and limits dv/dt stress on the winding insulation. For the Altivar 61 Plus and 71 Plus drives in floor-standing cabinets — particularly with separate air-flow paths or compact layouts — this filter is the specified protection accessory. It also reduces high-frequency common-mode currents that can cause premature bearing fluting.