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Recent content by cabber

  1. cabber

    motor control

    okay the problem resides when a reel in the beginning of the process switches over from being speed regulated to being voltage regulated. the switch causes tension to drop 65%, which means less control between the entry reel and the exit reel. the exit reel, during this state, backs up due to...
  2. cabber

    motor control

    I am taking in everyone's consideration and I would like to say thanks for giving me some ideas. I'll post back up when I track down this issue. Thanks again everyone.
  3. cabber

    motor control

    Motor: HP- 400 Arm. V- 250 Arm. I- 1300 Base Speed- 300 RPM Top Speed- 1340 RPM Field Excitation- 29.5A Field R- 2.85Ohms Generator: Power- 320 KW Volt- 250 Load I- 1280A Field Excitation- 18.8A Field R- 16.5Ohms Gear Ratio: 1.55 Inertia: 25.717 lb-ft^2 (full load) 3.117 lb-ft^2 (no load)...
  4. cabber

    motor control

    I'm thinking that it is. I'm a new person working on this system that was put into place approx 5 years ago. So I'm still getting familiar with the control issues.
  5. cabber

    motor control

    I totally agree with the above statement. But the situation is affecting product quality by producing creases at the eye of the coil. The mandrel reverses approximately 2 inches (not that much of a move, but enough to affect product). I don't believe it to be the tensioning system bc when the...
  6. cabber

    motor control

    yes, it always runs backwards before speeding up. I'm thinking that the tach might not be zeroed (from another post) and the positioning is wrong which then would contribute some error in the control system. I'll have to check with everyone else's inquiries and get back. Thanks for the...
  7. cabber

    motor control

    Hi, I have a dc motor that normally rotates in one direction for steel coil winding. I have noticed that after threading the coil onto the mandrel (beginning to wind the coil), the shaft first rotates in the opposite direction (slightly) and then begins to rotate correctly. I use an Avtron...

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