Set the interlock values for pumps in the DCS system
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Does LLIND=FALSE mean that the low-low alarm value for interlock pump shutdown is the same? What does FALSE after AND mean? Thank you; I’m a beginner
True means true=1, and false means false=0; think of it that way. After the first and comes false, which is 0, because before the and there is a 1 and a 0. After OR is false, because everything before it is 0
Just look at digital electronics and you’ll understand what’s going on:lol:lol:lol
I think what you’re seeing here are screenshots taken after logging into the control unit; therefore, the values shown as FALSE represent the current values. To understand the logic, one shouldn’t log in to the control unit but rather examine it offline. The logic is such that once the interlock for pump 2 is activated and the liquid level reaches the low-low limit, the output signal is sent to the pin that controls the automatic shutdown of that pump, thereby stopping it automatically, or it can also be done by pressing the emergency stop button
Learn about Hollyland’s DCS interlock system
This depends on the logic in the digital circuit. The symbol of the NAND gate, its truth table, and so on!
The alarm interlock should have 0 inputs and 0 outputs, right? Different people have different opinions on this