Understanding Power Supply and Ethernet Adapter Wiring"

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Discussion Overview

The discussion revolves around the wiring of a power supply to an I/O Ethernet Adapter, focusing on the terminology and connections involved, particularly regarding the Common and Chassis Ground terminals. Participants explore the implications of these connections and their roles in the system.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant expresses confusion about the wiring terminology, specifically the roles of Common and Chassis Ground in relation to the power supply connections.
  • Another participant suggests connecting the minus terminal to Common and the plus terminal to Supply, while also mentioning the potential connection of Chassis to an earth-grounded object for noise protection.
  • A participant questions the meaning of the DC supply being connected to the internal power bus of the Ethernet Adapter.
  • A later reply attempts to clarify that the DC supply connects directly to the supply lines of the device, though the explanation is noted as unclear.

Areas of Agreement / Disagreement

Participants have differing views on the specific connections and terminology, and the discussion remains unresolved regarding the best practices for wiring the power supply to the Ethernet Adapter.

Contextual Notes

There are limitations in the clarity of the terminology used, and assumptions about the connections may vary among participants. The discussion does not resolve the potential implications of connecting Chassis Ground in different ways.

gyroElec
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I'm trying to hook up my power supply to I/O Ethernet Adapter, and am getting confused with the wiring terminology.

The power supply is 24V DC (+/- terminals) and the Ethernet Adapter has NC, Chassis Ground, Common (C), and V (Supply).

I guess I am getting confused with what exactly Common and Chassis Ground are, and what I'm connecting the +/- to?

Thanks.
 
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I would put minus on "Common" and plus on "Supply". You might connect "Chassis" to a water pipe or other earth-grounded thingie to provide a little noise and interference protection. Usually chassis and common are connected together someplace in a system and it is best to do that in only one place to avoid "ground loops", so that's probably why they are separate on your box.
 
What does it mean when it says that the DC supply will be connected to the internal power bus?
 
It probably means that the DC supply goes directly to the supply lines (buss) of the thing. I can't think of a way to say that any clearer, sorry...
 

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