While you COULD add an external braking unit. It will probably cost as much or more as a new drive with the braking transistor built in. Sad but true. You'll need external resistor either way. If you were to find a braking unit, it would work without any troubles with your controller since it simply monitors bus voltage and turns on the transistor to dump energy to the external resistors as needed during rapid decels. If there is some other feature, such as a spindle lock involved, I don't see how a new drive would solve that issue. The braking unit just allows for quicker stopping without faulting the drive in a dc bus overvoltage trip. |