Reflected waves, also known as transmission line effects or standing waves, are over-voltages that can damage the motor and cable. Most VFDs today operate via pulse width modulation (PWM), with the inverter producing a continuous train of pulses rather than sinusoidal wave forms. These voltage pulses are transmitted to the motor terminals through the motor cable. The greater the length of the cable (i.e. the distance between the motor and the VFD), the greater the over-voltage, or reflected wave.
Contact us to learn more about Combating Reflected Wave | https://www.smcelectric.com/company/contact
