Heitor Posted March 6, 2019 Report Share Posted March 6, 2019 Hi. I have a PLC V350 in my application. This PLC is input PNP 24V. The application have end travel sensors but they don't work using other power supply. Why they work only with power supply from PLC? Is related with power from source? Please, sorry for my english and topic in inappropriate place. Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted March 6, 2019 MVP 2023 Report Share Posted March 6, 2019 Moved to the correct forum. Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted March 7, 2019 MVP 2023 Report Share Posted March 7, 2019 The commons of the sensor and PLC power supplies must be connected together. Can you post an electrical drawing of your wiring? Joe T. Link to comment Share on other sites More sharing options...
Heitor Posted March 7, 2019 Author Report Share Posted March 7, 2019 Hi. I connected the commons 0V through two power supplies. It worked. Thank you. Link to comment Share on other sites More sharing options...
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