Questions about wiring
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This post was last edited by gaodi913 on 2017-5-18 at 16:06. Dear experts, how should the wires be connected in this circuit? Should 24VDC be connected to 11 (+) and 13 (-), and should the 4–20mA signal be connected to 12 (-) and 13? The signal has no positive or negative distinction, right? Also, if the signal is not used, should 11 (+) and 12 (-) be shorted together? If it’s to be short-circuited, then why short-circuit it?
This needs to be explained by someone with expertise in electrical engineering
24VDC is connected to 11 (+) and 13 (-); 4~20mA signal is connected to 12 and 13. The signal has a positive and negative side, with 12 being the positive side, which must not be shorted under any circumstances. It’s fine if it’s empty.
So what does the (-) in terminal 12(-) mean?
The labeling in the image provided by the original poster is not standard: does the content inside the parentheses after terminal 10# refer only to terminal 10#, or does it also include terminals 11# and 12#? If it is a three-wire instrument, why is terminal 12# marked as (-)?
I’m going to sue the guy on the 4th floor for infringement: lol:lol. Terminal 10 is for protective grounding, which is different from the working ground. Of course, what is meant in the parentheses is 11 and 12; the minus sign indicates two-wire operation.
It’s actually just the wiring for 2-wire and 3-wire systems; just connect it according to the instructions in the diagram. If not necessary, there’s no need to make any short circuits unless otherwise specified.
Thank you for the expert’s help. So, how do I connect a two-wire instrument?
Two-wire instrument 12+, 13-. Does the 24VDC power supply mean that this device can provide 24VDC internally? .