Sizing Braking Resistor For My Vfd, Need Help

I appreciate the VFD responses since I am experiencing similar problems on my Birmingham 3hp 3ph mill. The VFD displays OL each time I set braking parameter to < 3 seconds. Thanks for the response, I will order a BR from Ebay now and it will, hopefully, solve the problem.
 
I'm happy to report that the BR is working great for the month or so that I have had it. I'm not sure how i got by for so long without it and I couldn't be happier with the results.
 
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