Precise speed control is crucial for reliable results.

Knowing speed is set and regulated, within a tolerance of +0.1 RPM for extended periods of time, assures consistent results. Using a Luminary drive, speed of the motor shaft is measured on a periodic time-base and compared to the input target value. Any difference is applied as a correction to the torque control that is needed to accelerate or decelerate the motor shaft back to the desired speed.

Precision Speed Control

• • • • • • Drive interface bypasses normal analog circuit path to allow access to digital registers which control operation of speed control loop.
          • Shaft speed stays constant within a small tolerance due to the quick reaction time of the correction applied to the torque control loop.
          • Consistent results ideal for liquid mixing or pumping.