Our customer has a motor generator set that requires to be controlled at 60 Hz output frequency.

Texmate installed a DL-40F controller to measure and display the frequency and to control the motor speed control actuator via the 4-20 mA analog output.

The analog output is scaled at 55 Hz for 4 mA and 65 Hz for 20 mA. The speed control actuator is set to 12 mA to govern the speed at a generator output of 60.0 Hz.

  1. If the frequency falls below 60.0 Hz, the motor speed increases.
  2. If the frequency rises above 60.0 Hz, then the motor speed decreases.

53_Motor Generator-Set Frequency Control