How Load Controls Work

Just about all industrial machines or processes are driven by an electric motor.

If the power load on the motor is monitored, valuable information is provided about what is happening inside the pump, machine, or process. Load controls measure the power load on motors and pumps, enabling optimized production processes, protection against costly pump failures, and improved preventative maintenance programs.

Power, measured in HP or watts, is calculated from the electrical connections powering a motor. This motor may be powering a pump, mixer, clarifier, blower, or other industrial process. By multiplying voltage x current x power factor (loosely described as the energy required to charge the coils in the motor), we can get an accurate view of the work the motor is doing. This gives us a signal to monitor and control motors. For pumping applications:

When flow rate is low, power is low.

When flow rate is high, power is high.

At light load conditions, caused by pump cavitation or dry running, power can give clear data on error conditions and need to react.