In a SIS system, can one solenoid valve be controlled by two SIS signals?
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As shown in the figure below, one signal is a level interlock signal and the other is an emergency stop signal; these two SIS signals are connected to a solenoid valve. I’m not sure whether such a setup is compliant Thanks for the advice.
Logic diagrams, right. . Performing AND, OR, and NOT logic in the system outputs only one DO point.
Go and take a look at the logic diagram and you’ll know. It’s actually just a signal. It shows the actions to operate this valve in two situations: low liquid level and emergency stop.
Why doesn’t the poster look like a third-grader in elementary school, but rather like a kindergarten kid?:lol
This post was last edited by Danielchen on 2019-3-28 at 15:09. Thank you, I understand now; I didn’t get it at first. .
Thank you for the guidance! :handshake
This must comply with regulations; all manufacturers do this. Some also have soft emergency stops and hard emergency stops