This electrical system is a budget friendly cabinet that allows for control of two 120VAC devices, with in-line glass fuses (housed in terminal blocks) that are easily changeable depending on the max amperage of your device. There are two 24V DC relays that are used to toggle the devices on or off, that are receiving signals from the PLC. This cabinet also holds an Adafruit thermal printer, that is used to print off information and data from the thermocouples and microcontroller.

The hardware used is ProductivityOpen's P1AM-100 module with a thermocouple and digital IO add on. I used Arduino (variant of C++) to program.

Colored terminal blocks allow for different voltage levels and signals to be easily identifiable and serviceable, especially with its electrical schematic in hand. Wire troughs and their respective covers keep the wires neatly routed and completely covered. Any interaction with this machine is only through "through-panel" connectors, which means that it is plug & play. Easily remove and change out TCs, power devices, USB cord for coding/data recording, and entry power.

For safety, the back panel is grounded to Earth and there is 20amp fuse in line with the mains voltage coming into the cabinet.

To make the cabinet ergonomic, it was mounted to a monitor stand so that the user/operator would be looking and interacting with the cabinet at eye level. This monitor stand can be adjusted to better suit the user.