WEG Drive Stopping before PLC timer runs out

Discussion in 'Electronics Resources' started by Brend123, Aug 11, 2015.

  1. Brend123

    Thread Starter New Member

    Jul 17, 2015
    2
    0
    Hello..., im struggling with my three-phase WEG drive stopping before the PLC timer runs out. I am a final year electrical engineering student and my project is a PLC-based control system for a three-phase induction motor. I have to control the speed of the motor on any load condition. I have five different rpms im testing the motor on and have a timer in the program that counts down the time the drive should keep the motor on the reference setpoint value. I am using a inductive proximity switch to count the pulses per second so my program can chase the reference frequency. I think the problem is in the drive, any suggestions please?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,565
    2,379
    Are you attempting to position a induction motor with a VFD & PLC?
    More details of the operation are needed, but the mention of a reference set point indicates a positioning application?
    Max.
     
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