>On 09/18/2015 04:38 AM, Marius Liebenberg wrote:
>>I have just fitted a replacement motor to my mill as the old one
>>finally
>>gave up the ghost. The motor does 1450rpm at 50Hz. The old motor was a
>>1.1Kw motor and the new one is a 2.2Kw. I want to over clock the VFD
>>to
>>105Hz in order to get around 3000rpm. I have tested the motor at that
>>and it seems happy in the short term.
>>My question is, what is the max that I can over clock the VFD / motor?
>>
>>
>
>I have been running a 1725 RPM at 60 HZ motor at 150Hz on my CHNC
>Hardinge. Sometimes for days at a time.
>
>Ed.
>
That sounds very promising. That is more than double the original spec.
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