Why is the error light on the P+F temperature-sensitive safety barrier lit?
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Today, a temperature-sensitive safety barrier of model KFD2-UT2-1 was added. The input terminal is connected to a platinum resistor, while the output terminal is connected to a digital I/O channel on the DCS. In any case, the error indicator light of the safety barrier keeps flashing, and the DCS shows -IOP. What could be the cause? Please provide an explanation
Check whether the wire is connected correctly; otherwise, try using another safety barrier.
This model of yours has a circuit diagnosis function: sensor burnout, sensor short-circuit, that is, open circuit and short circuit diagnosis. So check whether your RTD is intact, whether the wiring is correct, and also verify that your configuration is right.
Oh my god, I encountered the same problem; the symptoms are exactly identical. The resistance checks are all good.
Connect the laptop via a data cable to the configuration interface to check whether the selection is correct. The default is usually a thermocouple. You have to change it yourself and then set the range.