The VW3AE0656 is a sinus filter from the Schneider Altivar 61 Plus and Altivar 71 Plus drive range, designed as a protection accessory for floor-standing enclosures with separate air flows or compact versions.
What a sinus filter does on an Altivar drive
A sinus filter on the output of a variable-frequency drive converts the PWM waveform into a near-sinusoidal voltage, reducing motor winding stress and bearing currents on long cable runs. For the Altivar 61 Plus and 71 Plus, this filter mounts inside the floor-standing enclosure variant with separate air-flow paths — it is not a standalone panel-mount unit.
