Vehicle Control Unit (VCU/Control and Communication Unit) is based on the open control architecture and compliant to IEC-61375 "Train Communication Network" Protocol. It is suitable for WAP5/WAG9/WAP7 classes and its variants of 3-Phase Drive Electric Locomotives, fitted with either GTO or IGBT based Propulsion and Auxiliary Converters. Complete hardware and software (operating system, firmware and locomotive application software) is a single entity ready to be fitted in the locomotive. It can replace the MICAS-S2 VCUs. Designed based on the state of art technology, it eliminates the use of ASICs and addresses the obsolescence issue completely.