Yokogawa DCS3000 sequence control issues
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Automatic feeding control: when the cumulative flow value reaches the set value, the sequential control program does not output END. Could you analyze what the reason is? ? ? For example, if 2000KG is set in BSET, it will not stop even when the SUMZ value reaches 2000KG.
The loop contains a discharge pump P-102, a mass flow meter FQI-102, an inlet isolation valve CV-106 for the receiving tank, and a line purge valve CV-109
Is your sequential control shooting automated?
Both ST16s have been set to automatic mode
Do you mean that once the cumulative flow volume is reached, the pump is stopped, the shut-off valve is closed, and then the purge valve is opened?
Is there an error in the digital section? . It’s still an interface. Check whether the interface is responding. . Inside the computer case.