hi Recently, I am designing a control system for a ground vehicle with 5 DOF. We use maxon motors and controllers and use lithium ion battery as power supply right now, I meet some problem on grounding. Is any one know the difference between shielding ground and safety ground for maxon motor? I know the safety ground is for protecting human and shielding ground is used for interference suppression. Can I connect the two ground together to share the same reference ground? As, we plan to ground the battery to the body of our vehicle for security. And now, I don't know how to ground the shield. Can I just suspend them?