The microprocessor traction controller monitors all the required parameters and signals required for the correct operation of the traction equipment. It controls the equipment in accordance with the commands dictated by the control software.
To control the sequence of a motor coach is a relatively simple function for a microprocessor to perform. The operation of each high voltage switch is under the direct control of the software thus eliminating series interlocks and cam dependant time delays and overlaps. With the installation of a Microprocessor, it was possible to introduce many additional features to the motor coach control system as is described below.