Directional Motor Control with COUTs

Luke@ARI 2 months ago in Expansion modules / XA2 • updated by Gustav Widén (System support) 1 month ago 2

Hi all,

I'm thinking about controlling a motorized hydraulic pressure relief valve (the motor turns the pressure setting in and out) with two COUTs on an XA2 module. The motor was previously controlled with a couple of digital outputs and relays as an H-bridge. This is more of a XA2 hardware question; are the diodes necessary to protect the high side COUT as shown?:

Obviously only running either COUT A or COUT B at a time.

Or are diodes not needed?:



The serial diode will do nothing to protect the COUT highsides, the COUT highsides are already capable of being shorted to battery voltage without suffering any damage.