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Automation is one of the major concerns in any industry today. Automation is encompassing virtually every Walk of life required right from agricultural to space technology. Plant Automation is the necessity for the Manufacturing industry to survive in today’s globally competitive market .It relates to the working of the system at all times without any human intervention. In this paper we are designing a control circuit for the automation of Gas Tunnel Kiln (GTK) using relay logics and Variable Frequency Drives (VFD's) because the present doors and the movement of the transfer car in and out of the kiln are being operated manually and the temperature of the kiln is very high and hence manual operation is not safe. As whole, the process of charging and discharging of the green Insulators is being automated. The first step towards this is designing ladder diagrams which can be implemented using hardware components and simulation is done using LADSIM - PLC Simulator.
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