Control System for Forest Product Manufacturer

The Client: Forest Product Manufacturer


The client purchased a used 35 bay dimensional lumber sorter with the desire to automatically convey dimensional lumber through a measuring station.


The client mechanically reconditioned the sorter and LEC designed a new control system to interpret the data from the measuring station to determine the length, width and thickness of each piece of lumber. The lumber continues traveling down conveyor over each of the 35 different drop out locations. LEC’s control system tracks the lumber movement via an optical encoder and opens the drop out mechanism at the proper time. The result is lumber sorted by length, width, and thickness in each drop out point. The lumber is then stacked and transported to the dry kiln. The system is monitored and configured by custom graphics created on a Red lion touch-screen and controlled by an Allen-Bradley Control Logix PLC.