The Emerson Controller Maintenance - Logic Developer Controller course provides the student with the skills necessary to troubleshoot and repair faults in Emerson programmable logic controllers (90-30, 90-70, VersaMax, RX7i and RX3i). The class is taught using Logic Developer Controller software, which is part of the PAC Machine Edition family of products. The focus is on interpreting existing ladder logic programs for troubleshooting purposes. Students are also taught how to use the troubleshooting tools within the software to determine where faults have occurred and how to correct them