Re: [CAD_CAM_EDM_DRO] Re:Servo braking resistor in series with motor armature

Henrik Olsson wrote:

> Hi Jon,
> AFAIK the UHU is a "50% PWM at 0 speed" drive and it does not rely on
> software for current sensing/limiting. BUT it does not sense the braking or
> recirculating current....bummer....
>

Right, I have the schematic of the UHU, and at least for that
model, you are quite right. I was referring to the Rutex, which
has an additional mode where problems can show up, since it
shorts the motor when at rest.

The UHU drawing I have shows no separate freewheel diodes, and
if the body diodes get turned on during braking, that could be a
problem.

Jon