I currently want to control the temperature of a metal that is being heated by current induction. However, the correct current must be used in order to achieve a steady temperature (assuming stable conditions). There is a variable transformer (0-480V) that is controlled with a 120V motor to increase/decrease output onto second transformer which steps it down in order to increase current. I have a thermocouple positioned on the surface of the metal in which I am heating. I also converted AC current reading induced onto metal to mVDC (milli-Volts DC). Can I use the mVDC Voltage current signal and voltage reading from thermocouple to control 120V motor using a PLC?
Your help will much be appreciated!
Your help will much be appreciated!