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  1. Isaacwjp

    Rpm vs Max safe speed

    Thank you all for your input. I understand it now
  2. Isaacwjp

    Rpm vs Max safe speed

    Hi all, I'm in the cooling tower industries and deal with motors occasionally. Attached is the data from a permanent magnet motor. Could someone help to clarify the difference between 227 rpm and 3600 Maximum safe...
  3. Isaacwjp

    Help for ABB VFD (slightly urgent)

    Thank you all so much for your help. I am trying to gather more data as well as I am a cooling tower specialist so I'm not exactly trained in electrical. Apologies for the images, the Motor is rated 9.85. I might not be right, but could it be that usual induction motors usually run to 50Hz...
  4. Isaacwjp

    Help for ABB VFD (slightly urgent)

    Hi All, I am currently doing a project at a site that uses ABB ACS880 VFD. As you can see from the tracer below, the VFD Tripped at 43Hz due to the fault: Overspeed. I am unable to identify the root cause. -Shouldn't the fault only occur on 50Hz? -Does the trip margin change based on the...

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