text: <s>[INST] Powerflex 525 with PWM EDIT: moved to Drive and Motion Community -FL How to control Powerflex 525 with Three-phase motor by PWM or PTO [/INST] The PowerFlex 525 drive comes with a digital input built into the terminal block (terminal 7) able to read pulse train signals up to 100 kHz at 24V. PWM (Pulse Width Modulation) is a general term that refers to the way that most of the AC typical variable speed drives operate at the inverter section of the internal power stage. PWM technology is embedded in the hardware of the drive. The inverter section of a AC drive generates very quick voltage pulses of different length that are applied to the motor windings. The average values of those voltage pulses mimic a voltage waveform of variable frequency, which generates the motor shaft to turn. Very rarely the user/designer needs to be concerned about the PWM intrinsic feature of the drive. Apologies if am not fully understanding the question yet. Please feel free to expand or further explain the application or the task ahead to further comment. Regards, \\n </s>