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