There seems to be some glaring errors in the hook up in the link you show.
No1 they show F+ and F- as the feed to the motor and to reverse it.
The F terminals are for a field for a wound field motor, if the motor is a P.M. field, then the A+ and A- should be used, also NEVER reverse the armature without using the I1 and I2 reset terminals, this is if the power is permanently connected to the supply as the link shows, as the motor is reversed without going through acel first.
The KB reverse switches have a detent that not only prevents going from forward to reverse instantly, but also has a reset contact.
Its all in the documentation.
I am not sure how he was achieving current limit etc as this works on the armature not the field??
Al.
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CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.