Drum Rotation Indicators (DRI)

Drum Rotation Indicators (DRI)

Drum Rotation Indicators are used to communicate hoist rotation to the operator. This function can be achieved in two ways; with a speed sensor inserted into the axial piston motor, or with a geared tooth installed on the drum.  A proximity sensor picks up movement of the geared tooth through a magnetic sensor which is converted into electric impulses that are read by the crane. 

  • Indicates when hoist drum is rotating
  • Additional Security Feature