Large CIM breaker trouble

[Cody Carey]

I've searched and come up with some interesting threads... but as far as I can tell, this is the only question like this Sorry if it isn't

We attached the large CIM for our motor today, and We continually Flip breakers before it gets up to speed. We tried switching joysticks, and it helped for a throw or two (which doesn't make sense to me). When we slowly ramp the speed up, It gets to a higher RPM before blowing the breaker, but the breaker still flips.
We went back and made sure that nothing mechanically was binding, and everything was fine. We also did a check of our electronics, and everything is fine, except that we are temporarily using a smaller wire than we should. I would think that using a smaller wire would cause the breaker NOT to flip... But at this point I'm out of Ideas. We made sure to use the correct everything but wire running from the motor to the speed controller. The wire leading to the large CIM is coiled next to the 4 small CIMS we use, and when we aren't running them... It seems that the problem's severity lessens. But I don't know...

Any ideas would be greatly appreciated