On 5 April 2010 13:38, Erik Christiansen <dva...@internode.on.net> wrote:
> A) Is it safe to interrupt Motor Power to my 7i40s, with hairy great > inductive motors on their outputs? (OK, mostly resistive under load, > but then back EMF might also be deadly if V+ is open-circuited?) I don't know how relevant this is to your situation and the 7i40s but I found that an effective way to prevent relays exploding on my Robotwars robot (3 x 24V 750W motors, peak current 300A) was to wire conventional (and inexpensive) bridge-rectifier modules into the circuit with the AC terminals across the motor, and the +ve and -ve to the batteries. That way any voltage > Vcc + 0.6V is shunted back into the supply lines. -- atp ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
