SEQUENCER ANALOG OUTPUT UNIT

As a configuration for detecting an occurrence of abnormalities such as a disconnection of output wiring or an overcurrent of a PLC analog output module that controls a load by an analog current signal, the PLC analog output module includes a current output circuit that outputs the analog current si...

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Bibliographische Detailangaben
Hauptverfasser:	WATAHIKI MASATAKA, HOSHIKAWA MASARU, TAKASE SHIGEAKI
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING TESTING
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Beschreibung
Zusammenfassung:	As a configuration for detecting an occurrence of abnormalities such as a disconnection of output wiring or an overcurrent of a PLC analog output module that controls a load by an analog current signal, the PLC analog output module includes a current output circuit that outputs the analog current signal, a current sensing resistor provided at a current output terminal of the current output circuit for directly detecting an analog current output to the load, a monitoring circuit that monitors voltages at both ends of the current sensing resistor, and an abnormality detection circuit that discriminates whether there is an occurrence of a disconnection or an overcurrent based on a monitoring result of the monitoring circuit.