See the attached schematic. As I test this out, I will occasionally see the K1-B contact remain closed after I open the "External System Enable" switch. The relay contact will "stick" even if the motor is not running as I open the "External System Enable" switch. So the only current through the contact is that of the power supply. Note that I had run the motors before opening the "External System Enable", I am simply stating they are not running at the time I open the "External System Enable" and see the N.O. remain closed.
My thinking is this relay cannot handle the inductive load, period. As I look at the spec for it and it only lists "resistive" load. But I'm not sure about that. Also note, these motors are NEVER running at the same time.
Can anyone shed some light on what might be causing this to happen? Could it be too low a current from the power supply? I've see other threads stating you need to properly "wet" the relay contacts? Regarding ample load as relay closes, as I understand it.
Relay Data Sheet <--- http://www.mouser.com/ds/2/307/omron_en-g5la-548280.pdf