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
    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


    Jul 18, 2013
    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?