text: <s>[INST] Powerflex Drives Specifications When reading the Specifications for a Powerflex 750 Series Drive it states that in Flux Vector Torque Control Mode the specification is +/- 2% 2500 rads/s bandwidth with an encoder and +/- 5% 600 rads/s bandwidth without an encoder I understand the percent is percent of total base torque. So if using a 60 n-m motor the 2% is 1.2 n-m or 5% is 3.0 n-m. I just don't understand what radians per second bandwidth has to modify the situation. [/INST] Hello, think of bandwidth in this context as how quick the internal Torque Loop inside the drive can work. The higher the bandwidth, the faster the torque loop can react to torque variations. The faster the torque loop is, the more accurate the torque regulation will be as well. The speed and torque closed loops inside the drive are implemented via the firmware. Typically the input of the torque loop comes from the output of the speed loop and the regulation of the torque signal occurs much faster than the speed signal. This is normal. Bandwidth can also be measured in Hz. 1 Hz = 6.28 rad/s. Think of the bandwidth in terms of frequency domain rather than time domain. So for example if signal to control (in this case Torque over time) is likely to change very quickly in the time domain, then the higher the bandwidth of the system the better chances the control loop of the system will have to control more accurately the output torque within tighter tolerances. Jose Garcia \\n </s>