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-ANGRY-STUDENT-
6y

TIL how time-delay relays are used in circuits with a hell lot of power. For example to power and control the motor of a machine that lifts 20 people up to the sky and back to ground again.
FYI this is a simple circuit. We will hopefully start experimenting with SPS/Speicherprogrammierbare Steuerung (Programmable Logic Controllers). I cannot wait to make use of our predesigned circuits with complex logic gates with the new unit we will get to know.
Unfortunately, we will do practical networking (testing cables for the signal strength and speed, building a network of telephones and call each other - guess this is going to be the funniest part lol, etc.) before the SPS and LOGO software phase.

Btw. I am doing an all-nighter rn and repeating everything we did in our recent signal calculation lesson. We have another exam tomorrow.

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  • 3
    6y
    Nvm the areas where the lines beginning right after S0 leading to the LED logic and S1 leading to the main logic are weirdly on top of each other.
    I had to correct the design a few times and I had no other place to put them to make the design look more clean.
  • 2
    6y
    Fancy. Makes me wish I had finished an EE degree. This looks like a lot of work.
  • 2
    6y
    @Diactoros thanks :). It took me about an hour. There were other complex circuit designs that took me about 2 hours.
    I can send them here, if you want me to.
  • 2
    6y
    @Diactoros I do not get an EE degree in the end. I am going to get a job qualification letter and the qualification to attend a university.
    We are an IT class that does almost anything. Database planning and turning our plans into reality, software planning, programming in C and Java, circuit design and doing them practically, networking and operating systems and the other usual courses like mathematics and shit.
    It covers a lot of fields.
  • 2
    6y
    Meh that is old ladder type schematic.

    Tell me do you have access to siemens logo plc? I have seen that they have a new fancy visual programming mode.
  • 2
    6y
    SPS is the source of a lot of evil and terrible system designs. I never understood why industry is so obsessed with it.
  • 2
    6y
    @Gregozor2121 we do not know it yet. The teacher won't let us know until that exact day happens to be the day of today.
  • 1
    6y
    @Kisle but why is that really the case?
    Why do you think about it that way?
    Maybe @condor has some answers to it, too.
  • 1
    6y
    @-ANGRY-CLIENT- no idea honestly, maybe @Fast-Nop can chime in? Out of curiosity though, how do these relays deal with the inductive spiking of these motors? Do flyback diodes / capacitors still suffice at this scale?
  • 2
    6y
    @Condor I did have energy tech in my studies, but that was in 1996 or so, and I managed to forget most of it. Except some memory of star/triangle motor switch upon start to reduce startup current.

    But a story I do remember: we learnt about pumped storage hydro power station stuff with water rushing up and down the pipes. One student suddenly asked "and what about the fish?"

    Prof's totally dry answer: "dunno, I'm no fisher."
  • 1
    5y
    Update: We didn't even start with SPS/PLC. That was planned, but, unfortunately, it never got executed.
    We will get our degrees and certificates on Thursday. Yep, I made it. I passed this disastrous school's class of motherfucking hell.

    Before someone asks what I'm gonna do now: I did create lots of accounts on the respective websites of the universities I want to apply to.
    Right now I am just counting the days to get my degrees and certificates and I will scan and send them on the same day I get them.

    After the registration process, I will drive to Turkey with my family and have a good time without having to give a fuck about exams that are probably going to start spawning at the very first school week.
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