Pressing machine, particularly household refuse compactor and control circuit therefor

摘要

The pressing machine includes a pressing ram, a drive arrangement for moving the ram from a starting position to an end-of-stroke position and back to the starting position and includes an electric drive motor. A control arrangement establishes the end-of-stroke position for the ram. The control arrangement includes a direction-reversing circuit connected to the drive arrangement for reversing the direction in which the drive arrangement moves the ram and includes a direction-reversing relay arrangement having a current path for activating current. A controllable electronic switch is connected to the activating current path for controlling the activation of the direction-reversing relay arrangement. A control-signal-generating circuit controls the conductivity of the electronic switch by generating and applying to the control input of the electronic switch a control signal dependent at least upon the loading of the drive motor.