The Constant Tension Winch drum is driven by a 11 kW SEW electric gearmotor through an output shaft. The drum motor Variable Speed Drive

drives the electrical motor of the Drum with variable speed according to the control signals and rpm setpoint of the potentiometer. For

automatic tension control the load pin signal is used as feed-back, it provides the PLC a current signal proportional to the force acting on the

load pin and its value is displayed on the HMI. In manual tension control the Tension Control potentiometer provides an analog signal to the

PLC and the tension is proportional to the analog signal (0V -> 0 Tension … 5V -> half tension … 10V -> maximum tension)

The non-drive side housings the bearing and slipring. The Slipring is not within the scope of supply. The SEW Electric Motor combination is

fitted with a failsafe brake unit. The brake, being failsafe, always defaults to on should, for any reason, the electrical supply is lost or the

joystick is in its centre (neutral) position.