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[andrewbond]

Hi,

I know I'm a bit late coming back with this but..

Just curious, did you use a brake resistor on your high power drives?

Andrew

[Jonathan]

Just curious, did you use a brake resistor on your high power drives?

Brake resistor allows the VFD to stop the motor faster ... increases the deceleration.
Sounds good at first, but really since the spindle stops in about a second without one, and my lathe will stop on the VFD in 2.5s without a brake resistor I really don't see the point. You're just stressing the motor more by putting a much bigger force on it during deceleration. Or if it's on a lathe the gears/keyways in between will wear faster.
The only exception to this is for an emergency stop where you want the spindle/motor to stop as fast as possible.