After installing the brake resistor and messing with my 1 HP drive on the Bridgeport...
Here's something I do not understand.
Depending on frequency and belt ratio, the drive would have a differing minimum stopping time. No surprise here, since stopping a motor involves dissipation of its kinetic energy, which depends on the RPM of the whole rotating mass. The more RPM, the more energy, the longer it takes to dissipate.
That's kind of obvious.
But my VFD only offers a fixed time braking option, I can set a "stop time" regardless of run frequency or belt ratio.
If so... Why does my drive (as are other drives that I have seen) does not offer a braking option that would amount to "just dissipate as much energy as it can without causing overvoltage"?
This VFD can stop my mill, at low frequency and RPM, in a small fraction of a second.
At higher RPM, it takes longer.
What is so difficult about writing software that would take it into account?
The provided function to enable overvoltage protection, just does not seem to be working.
There must be something that I am missing.