HMI, VFD and DCS Training Institute in Madurai. We are leading Training Centre in Madurai A Human-Machine Interface (HMI) is a user interface or dashboard that connects a person to a machine, system, or device. A variable frequency drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage of its power supply. The VFD also has the capacity to control ramp-up and ramp-down of the motor during start or stop, respectively. A distributed control system (DCS) is a digital automated industrial control system (ICS) that uses geographically distributed control loops throughout a factory, machine or control area. We handled the following Electrical Courses • Electrical CADD • Industrial Automation • PLC • SCADA • HMI • VFD • DCS • PCB Designing • Multi Sim • Revit MEP