The actuator is employed to control the revolutions of permanent-magnet direct-current motors with an operational voltage of 12 to 24 V DC.

Through pulse width modulation a reliable output voltage is achieved. Minimum and maximum revolutions are pre-set in the unit using potentiometers. The output voltage and with it the motor revolutions can be controlled between these pre-set values by another potentiometer at the unit.

The actuator can be supplied with a direct current of 12 or 24 V using a battery or a transformer / bridge rectifier / smoothing capacitor.

The trimmer is pre-set to maintain a certain average speed with a maximum deviation of approx. +/- 5%. For a more accurate setting the trimmer is to be adjusted in a way that the motor revolution is not increasing if maximum load is applied at minimum revolutions.

To set the upper revolution the main potentiometer is to be set to “10”. With the control-potentiometer the required revolution is adjusted.

To set the lower revolution the main potentiometer is to be set to “0”. With another control-potentiometer “L” the required revolution is adjusted.

For more information please refer to the datasheet: