Dunnage conversion system and method for expanding expandable sheet material

A dunnage conversion apparatus, comprising:

• a frame;
• a supply support mounted to the frame for supporting a supply of sheet material that includes a roll of sheet material;
• a pair of expansion members including an upper, first expansion member and a lower, second expansion member, rotatably mounted to the frame downstream of the supply support to receive the sheet material therebetween and for rotation about respective first and second expansion axes;
• and
• a drive assembly including one or more motive devices, the drive assembly configured to concurrently drive rotation of the roll of sheet material about a longitudinal supply axis of the supply support and to drive rotation of both of the first and second expansion members about the respective first and second expansion axes,
• where the drive assembly includes a drive member driven about a drive member axis by the one or more motive devices, where the drive member is movable between an operating position adjacent the supply support to drive rotation of the roll of sheet material and a disengaged position spaced from the supply support, and where the drive member in the operating position is configured to inhibit removal of the supply support relative to the frame.