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Tutorial WIP How to drive AC motor: principles

Discussion in 'Motor actuators and drivers' started by RacingMat, Oct 21, 2015.

  1. speedy

    speedy Well-Known Member

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    Hi guys ...
    Normal Induction motors are Good choice with simulators and you can use additional fans in the motor back end to handle the heat in low speed/reversing conditions ... a good choice for sure :thumbs .

    But the inverter-duty motors still are the Optimum choice if found in a good price ;)
    A quick comparison between the inverter-duty and normal induction motors .
    http://motors.automationdirect.com/Information/compare.html
    In summary, general purpose motors can be run with drives in many applications; however inverter-duty motors are designed to handle much lower speeds without overheating and they are capable of withstanding higher voltage spikes without their insulation failing. With the increased performance comes an increase in cost. This additional cost can be worth it if you need greater performance.
    • Like Like x 3
    Last edited: Oct 24, 2015
  2. pipis2015

    pipis2015 over-boost

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    lots of interesting info here:thumbs
  3. speedy

    speedy Well-Known Member

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    • Like Like x 1
  4. TFOU57

    TFOU57 Member

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    Hello,
    Have you a feedback on the use of Mach3 module?
    [​IMG]
    • PWM digital signals into analog signals from 0 to 10V.
    • Convert PWM digital signal into 0 to 10 v analog signals.
    • Power Input Range: 12V-30V (Power requirements: more than 100MA)
    • Signal interface switch can be used for PLC or other industrial control board.
    • PWM Reception frequency range: 1 KHZ - 3 KHZ.
    • Current output capacity: 10MA.
    • Resolution: 0.1V.
    • Usage: by adjusting the potentiometer board, can match the calibration of PWM signals of different frequency pulse
      My questions about this adaptation circuit
      Do you have this deck wiring diagram?
      1) PWM frequency range 1 kHz - 3 kHz it is not disturbing because in the audible frequency range?
      2) Resolution 0.1V = 100 not only changes?
      3) What is the component that limits this de0.1v and precision?
      4) This Mach3 plate allows it to have the output 0to 10v if the PWM input only varies from 0V to 3.3V?
      Originally, I wish to find a matching circuit:
      Input 12bits of 0V to 3.3V PWM 20kHz to 40kHz
      OutPut 12bit DAC with 0V to 10V 20kHz to 40kHz


    Bonjour,
    Avez-vous déjà un retour d’expérience sur l’utilisation d’un module Mach3 ?
    Caractéristiques
    • PWM des signaux numériques en signaux analogiques de 0 à 10V.
    • Convertir signal numérique PWM en 0 à 10 v signaux analogiques.
    • Gamme de puissance d'entrée: 12V-30V (exigences de puissance: plus de 100MA)
    • commutateur d'interface de signal peut être utilisé pour PLC ou un autre panneau de contrôle industriel.
    • PWM gamme de fréquences de réception: 1 KHZ - 3 KHZ.
    • Capacité de sortie: 10mA.
    • Résolution: 0.1V.
    • Utilisation: Le déplacement du curseur du potentiomètre permet l'étalonnage des signaux PWM d’impulsions à des fréquences différentes
    Mes questions au sujet de ce circuit d’adaptation
    Avez-vous un schéma de raccordement de cette platine ?
    1. La plage de fréquence PWM 1 KHZ - 3 KHZ n’est-elle pas perturbante car dans la gamme de fréquence audible ?
    2. Résolution de 0,1v = 100 pas de variations seulement ?
    3. Quel est le composant qui limite ainsi cette précision de0.1v ?
    4. Cette platine Mach3 permet-elle d’avoir en sortie 0à 10v si l’entrée PWM ne varie que de 0v à 3.3v ?
    A l’origine , je souhaite trouver un circuit d’adaptation :
    Input 12bits de 0v à 3.3v PWM 20kHz à 40kHz
    OutPut 12bits avec DAC 0v à 10v 20kHz à 40kHz
    Last edited: Apr 10, 2016
  5. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    I haven't tested it yet, sorry... because I finally didn't bought an Inverter
    Last edited: Apr 11, 2016
  6. TFOU57

    TFOU57 Member

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    @RacingMat
    Thanks for your reply, perhaps others uses this module Mach3 that intrigues me because I'm not sure get the 10V if I have an INPUT in 3.3V maximum PWM ?
    ... and this low low frequency range. … ? Audible frequencies during the piloting of the frequency inverters ?

    Merci pour ta réponse , peut-être d’autres personnes utilise ce module Mach3 qui m’intrigue car je ne suis pas sûr d’obtenir du 10V si j’ai un INPUT en 3.3V PWM maxi ?
    … et cette faible plage fréquence faible. … ? Fréquences audibles lors des pilotages des variateurs de fréquences ?