A baler having a compression system for forming a bale. The baler also has a feed system having a pack mode for accumulating the crop in a pre-compression chamber and a lift mode for conveying the crop to the compression system. The baler also has a sensor arrangement having at least one sensor generating a signal, the at least one sensor being coupled to the feed system. The signal corresponds to a crop load on the feed system. A control unit is configured to receive the signal from the sensor arrangement and initiate the lift mode based on at least the signal.