I would like to ask: DC power supply when the ground terminal when used? how to use?
Question 1: If the power supply is three-core, the terminal can be connected to the buried pillars above, if there is no copper pillars, vacant
Question 2: I have not used two of the two. If it is connected, personally think that one can be. Specifically you can confirm whether the two terminals are directly connected, and the equipment manual recommended connection.
Question 1: If the power supply is three-core, the terminal can be connected to the buried pillars above, if there is no copper pillars, vacant
Question 2: I have not used two of the two. If it is connected, personally think that one can be. Specifically you can confirm whether the two terminals are directly connected, and the equipment manual recommended connection. In some control accuracy requirements of relatively high occasions, requiring a public ground, or independent grounding, etc., which can reduce crosstalk, interference, etc., specifically see how the requirements of the book ok.
Ground (PE): not used for working circuits, only as a protection line. The use of the absolute zero voltage of the earth, when the equipment shell leakage, the current will quickly flow into the earth, even if the PE line has an open circuit, will also flow from the nearby ground into the earth
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And then better, if it is a metal shell, to prevent electric shock; also can provide electrostatic discharge circuit
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Connection: received three-core power supply on the ground, if there is buried copper pillars, then better in the above, because more pure
