JorZorro Posted January 24, 2022 Report Share Posted January 24, 2022 Hi everyone I have a problem with a sensor. It's a LDR sensor and I know that some PLC like Samba o Vision have RTD input. Is it possible read ohms with RTD input, or is it necessary to attach the sensor in a voltage divisor to read 0-10V analog input? Quote Link to comment Share on other sites More sharing options...
MVP 2021 kratmel Posted January 24, 2022 MVP 2021 Report Share Posted January 24, 2022 Hi, standard LDR sensor working resistance 50-100K. Samba RTD input works with approx 100+- Ohm. Then you must use some external cirquit for convert LDR resistance to 0-10V or 0-20mA signal. Something like https://www.electronicscomp.com/ldr-light-sensor-module-india can be used, but it powered by 5V DC and you can use only half of 0-10V range. Quote Link to comment Share on other sites More sharing options...
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