Announcement

Announcement Module
Collapse
No announcement yet.

Electrical switch

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • Electrical switch

    What do you think about adding a potentiometer to a sectional machine? Would it tear up the motor? I can't be the first person to think about it.
    AllurePlumbing.com
    • leak detection
    • drain cleaning
    • utility locating
    • conductor fault locating
    • and other specialties.

    Greensboro NC, Winston-Salem NC, High Point NC, Thomasville NC, Kernersville NC

  • #2
    Re: Electrical switch

    A potentiometer is a resistor and using one lowers the output voltage to the motor which is not good. What you should use is a VSD or variable speed drive or a motor controller. These devices basically interrupt the voltage many times a second and is variable allowing you to control the speed of the motor on your sectional machine. You need a VSD rated to exceed the amperage of the motor you are controlling.

    Comment


    • #3
      Re: Electrical switch

      Another downside with a potentiometer based controller is that you will be dissipating the unused power in the pot. This is a waste of energy and the potentiometer may run hot.

      As was mentioned a chopper type controller is the better way. A thyristor/SCR "chops" the supply many times a second and the duty cycle is what controls the speed. When the SCR is turned off there is no power dissipation so on lower power setting you are not wasting any energy.

      Comment


      • #4
        Re: Electrical switch

        on an instant acting clutch like a k-60, it's a waste of time. the sectional is more of a high speed cuter than a torque monster. i can easily throttle the cable from full to slow and stop.

        i would think on a heavy drum flywheel that a slow speed start and variable speed would be much better. would also cut down on initial jump and add safety when encountering a stopped cable at a short distance in when there is no spring to absorb the fast build of of torque.

        rick.
        phoebe it is

        Comment

        Working...
        X