hi
In reply to Adam, you got to apply power in the controller to make the circuit so it can generate power, that being said when thinking about it (unfortunately I have little/no practical experience) the mosfets and diodes are designed to stop power going in reverse yes?
When the reverse contractor(and the controller) is excited the +- bar arrangement is basically reversed, maybe for power/stopping the controller needs to be wired in backwards, possible with one or more reverse contactors but this maybe to dangerous.
On the mechanical break front, most definitely plus it is a legal requirement in my part of the world.
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