The shaft position signal is used when changing the direction of rotation of the shaft and is used to determine the exact instant reversal of rotation takes place after reversing torque direction.

The shaft position signal senses shaft vibration due to shaft bearing wear or propeller blade damage and provides data for the predictive maintenance system.

The shaft position signal detects axial movement of the shaft due to thrust bearing wear and provides data for the predictive maintenance system.

The shaft position signal is used when in the shaft-synchronizing mode to momentarily accelerate or decelerate the shafts to align the propeller blades of the two shafts to reduce vibration.