Questions about AO card components
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I have a question: We’ve added a new AO card here, and when its output is 0, the current is not 4 mA but rather 0 mA. I’d like to know what’s causing this and whether there’s any solution. We’re using a CS3000 system, with an AAIA543 card
That card should be able to output 0–10 mA DC and 4–20 mA DC; please check whether it is configured to output 0–10 mA DC
I’m sure I’ve checked this already. . I don’t know what the problem is now. . Have any brothers encountered similar problems?
Add 1% signal to it in the control room and see if the output is 4MA
I would like to ask, what output do the other valve openings have? ? Is it related to power supply?
Reply to 3# wwinner: The methods mentioned by the people above are all among the correct ways to find this issue. Here’s another hint: In the Yokogawa system, each regulator has a set of related parameters, namely Fully-open actual value/Tightly-shut actual value. These parameters are used to enable the tight shut function of the valve. There is relevant information available in random sources; study it carefully and make appropriate adjustments based on the actual situation. Start by gradually changing the parameter settings and then record the output of the card one by one until the results are satisfactory. Believe in yourself, and you will surely be able to solve it; it will remain firmly in your memory and you will never forget it.