Hi Andrew

> It depends on when you need the brakes on. 

Well, the brakes are supposed to prevent the servo from moving when
powered off, for safety reasons but also to be able to power up the
machine without the need to home the axis (nor sure if this is really
possible)


> The simple solution is connect brakes to enable.

So I take the enable signal for the servo controller (7i39) and use that
to switch on the brae supply, right?


> Other is powering brakes when commanded velocity magnitude
> exceeds some near-zero value.

sounds more elegant, but that means I have to use an extra i/o pin (no
problem there are plenty of them free) and generate the signal for it
(don't know how to do so, right now)


See you
Florian

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