PN8602E must be well grounded, so that the induction of electricity, leakage of electricity can safely into the earth, and improve the machine's ability to resist electromagnetic interference. When connecting, use a grounding cable to connect the chassis grounding point to the ground or earth of the equipment room. The grounding resistance of the equipment room is less than 10Ω. Please refer to the relevant national or local standards. The chassis ground is located on the right side of the chassis