On Wed, Feb 13, 2013 at 11:59 AM, Gene Heskett <ghesk...@wdtv.com> wrote:
> My point was, and still is, that relays & switches, unless mercury wetted, > are generally dirty at both operations > Contactors do not 'bounce' on open. Esp w/ inductive loads;) An enable signal to the drive is NOT safe w/ DC servos. When the transistors fail, they will apply full voltage to the motor. The only surefire way to stop them is disconnect the motor or disconnect DC power from the bridge. SMD ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
