Monday 28 June 2010

Frame wiring

Our lecturer took us outside and showed us the mock house frames, and told us that we will need to split into two teams and discuss about jobs that we need to do. So we each got own circuits to set up. We were given a Monday and a Tuesday to completely wire, test and then remove our wiring, ready for the next class.

I did the power points and cooking range switch & socket. Everyone else did their circuits. My group's teamwork & communication skills are excellent! We got to finish everything first.

Reflection on sitting Test 1 - Max Demand & Test 2 - Regulations

For Test 1 - Max Demand, at first I found it a bit hard to understand. I did not do very well on the first test, so I decided to study hard for the resit so when I did that I realised that it is actually not that hard to understand. All I need to remember is how to work it out, remember the formulas and that's it pretty much. I think I will find it much easier when I use it more often when I work as an Electrician one day.

For Test 2 - Regulations, I did not study much before the test because it is all in the books. I did skim through the books occasionally and I believe that helped me to pass my test no problem - the test were a bit challenging because of amount of the time I was given to do the test wasn't enough as I expected. Reading through the books to find the answers wasn't as easy as I expected I think. But overall, I think I did ok :)

My panel board wirings


I think that it is awesome for us to have the opportunity to set up own panel board, so we can understand what it is actually like being an Electrician in real life. It was a bit tricky at the beginning, but during the progress I found it quite exciting and fun. I was asked to install a ripple relay, KWH Meter, main Switch, two Fuses, neutral Lug, switchboard, 2x power points, range switch, joint, earth bonding pipes, HWC, and few other things. See following for a photo;


Electrical Certificate of Compliance (CoC)

I find it interesting to learn how to fill out the CoC form. This CoC form is for my panel board :)

Saturday 19 June 2010

PLC Project: Vending Machine


This is the PLC project that Ryan Cassidy and I were working on during the second semester. In the image, you can see a DC power supply (the black box on the left) We set the DC voltage at 2v d.c, it is enough to power the motors and is the maximum voltage the LED can handle (after multi-failed testing)
On the right of the power supply is the PLC.
The second black box in the front is a vending machine.














This is the vending machine. There are a total of 9 buttons, 5 motors and a LED. Each device on the machine will be explained later. There are 5 different choices of energy drinks, they are displayed on the machine. These drinks are: Rockstar, Red Bull, Demon, V and Mother (in order from top to bottom.)Each product is priced at $1.00.















In the image: 4 push button at the far right simulate these coins,from the top to bottom is 10c, 20c, 50c and $1. Each can be pressed until it reaches $1 (the price of the product) and then the LED is lit.

In the image: A LED and 5 energy drink push buttons (next to the coin push buttons and on each colourful banner of energy drink). The LED will be lit after it reaches $1 and then these buttons will be activated, to be pressed and the motor will be operating. They can only be pressed once and one motor will be running for 5 seconds.

In the image: 5 motors. Most parts of the motor are hiding in the back. This part on the front will be displaying the motion of the motor after it has been activated.



Back and Connections.

In the image: This is the back of the Vending Machine, you can see the motors and wiring.
















In the image: 5 motors.













In the Image: This is the connection of wiring from the power supply and PLC to the vending machine.
















In the images: The connections. The first image is the output leading up to the motors and the LED, it is also connected to the DC power supply. Second image is the input, for all the push buttons.



The presentation of this project will be on the 17 of June, Thursday.