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Recent content by Denimkd

  1. Denimkd

    Choosing motors for crane application

    Yes Lionel, every time I was asking how to calculete the torque of these motors (slip ring and squerrel cage) and will these squerrel cage motors provide me enough torque as slip rings motors. But how ever, it is very nice for me to include on this forum, there is everytime some action:) Regards
  2. Denimkd

    Choosing motors for crane application

    Thanks guys, for your help. I have decided, I will put drive with induction motors and encoders on hoist. Now I just have to calculate the size of the new motors and drives and after to try the application. Thank you very much to all of you. PS Gunnar you have to be more relax, not everyone...
  3. Denimkd

    Choosing motors for crane application

    Hi LionelHutz, thanks for your answer. That is what I need. How can I calculate the Tmax? For ex. Tmax=Tconst+Tacc, now: Tconst=...? Tacc=...? These equations I was looking for. If you know these equations, ok, if you don´t I will find them on internet. Thanks again, clear and simple, Best...
  4. Denimkd

    Choosing motors for crane application

    Thanks guys for your response, clearly I can´t get an answer that I´m looking for. Never mind thanks for your contribution in this. Best regards
  5. Denimkd

    Choosing motors for crane application

    Hi, I said that I´m new in this forum, but I didn´t said that I´m new in engineering. I have worked on PLC and SCADA programming, and I have also worked with drives with squirrel cage motors, but not on crane systems. So, I know how can I controled etc, but I´m not sure about how powerfull are...
  6. Denimkd

    Choosing motors for crane application

    Gunnar, with all do respect, I didn´t meen to insult you. I´m very sory if I did that. All I wanted to say was that, a DC motors are out of question. I wanted from someone to explain to me the difference between AC slipring and squirrel cage motors. The motors are for overhead crane 13t in...
  7. Denimkd

    Choosing motors for crane application

    Hi, Skogsgurra Thanks for your response, but DC motors are not among my wishes. If you didn´t notice, I said that I already have AC slipring motors. DC motors maybe are better for speed control, but they are much more expensive to buy them and after to maintainced them. So, my question was...
  8. Denimkd

    Choosing motors for crane application

    Hi to all, I´m new in this forum so please be gentle with me:D I have a little problem, so if you can help me with my choise. I have to choose motors for crane aplication. Old motors are slipring motors. I will put drive for control too. 1. If I choose squrrel cage motors, should I predict to be...

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