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Thread: Can DC motors be safely started without ramping up?

  1. #1

    Default Can DC motors be safely started without ramping up?

    Hi,

    Can I start my DW motors at full speed? Or is it necessary to ramp up slowly?

    Any help or advice are much appreciated.

    Regards,
    Kris
    Last edited by Kris Cardoen; 04-02-2012 at 02:29 PM.

  2. #2

    Default Re: Can DC motors be safely started without ramping up?

    DC motors? (DW?) Depends on the application. Small motors with low momentum and low current demands can often be switched on without ramping, if the application is OK with it. Large motors have large starting momentum and large current demands, and a soft start with ramping has many advantages, lower startup power and mechanical shock included.

  3. #3

    Default Re: Can DC motors be safely started without ramping up?

    Very large motors (eg, elevator motors) are required by law to minimize current spikes, and so must be ramped...

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