Category: EtherCAT
My StepperOnline/LeadShine EL7 EtherCAT servo drives don't have a STO (safe torque off) feature. Because of this, I have the servo drive AC power fed from a contactor that's part of the safety relay / E-Stop loop. When E-Stop is triggered, the contactor cuts out and the drives will lose AC power entirely. Unfortunately, these drives do not have separate power inputs for logic vs motor like I have seen on other brands.
I think this is fine from a safety standpoint both for humans and for the lifespan of the drives. But this means the drives will drop off the EtherCAT bus and LCEC/LinuxCNC will lose their minds. I'm not sure how recoverable this is beyond shutting LinuxCNC down and starting it back up after the emergency stop condition has cleared.
What approach have others taken to this scenario?
