Part of a plastic injection machine - My part!

Here is a part of a project we're finishing in my automation module at school! This is the panel I've assembled. It basically consists of different power supplies, security devices and power control devices. The automaton, which is the brain of the machine, is located in another panel which has been assembled by the partner I work with.

The upper left device is a motor drive, controlling a 3-phase motor located in another panel which already had the components installed, but not the wiring. I did this part as well.

Next to the drive is a pair of contactors that serve as disconnecting security devices to the 3-phase motor. The two smaller relays are also used for security purposes.

The red thing is called a security relay. It is in fact a group of relays combined with various electronic circuits. It mainly controls the pair of contactors mentioned earlier, and a solid state relay that switches a group of three power resistors. If there's any problem (fault, short-circuit, emergency STOP button pressed, power panel opened), this relay turns everything off and may need a reset, depending how bad is the trouble.

The middle row is a series of various control relays.

Finally, the lower row is a large row of terminals, that suck all the way XD.

The whole machine needed over two months of work. We completed the wiring part last week, and we had very few troubles, considering the complexity of the project! Only small issues, like missing wires or loose terminal connections.

Feel free to tell me what you think guys! More pics and even some videos to come!