Hoops123 Posted February 1, 2023 Report Share Posted February 1, 2023 Hello, I was asked by a client if i could add some lighting to a machine. The light was to act as an indicator of the temperature of a heat element. The LEDs should be blue when the element is at room temperature then transition to red when the element is at operating temperture. The colours should fade into each other to show heating progress. I thought this would be easy so i have left it pretty late. I assumed there would be an LED controller that could interface with a PLC but I cant find one. Have any of you had to do anything like this before and know of a product that will do the job? TIA Quote Link to comment Share on other sites More sharing options...
MVP 2023 kratmel Posted February 1, 2023 MVP 2023 Report Share Posted February 1, 2023 https://muccosignal.com/product/surface-mounting-multicolor-rgb-warning-light/ You can use two PWM PLC output for operate blue and red LED. 1-st start with 100.0% PWM duty on low temperature. Second with 0% on the same condition. Both PWM can be operated by Linearization FBs. Input temperature - outputs PWM setpoints. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted February 1, 2023 MVP 2023 Report Share Posted February 1, 2023 41 minutes ago, kratmel said: You can use two PWM PLC output for operate blue and red LED. 1-st start with 100.0% PWM duty on low temperature. Second with 0% on the same condition. Both PWM can be operated by Linearization FBs. Input temperature - outputs PWM setpoints. Nice solution, kratmel! Quote Link to comment Share on other sites More sharing options...
Hoops123 Posted February 2, 2023 Author Report Share Posted February 2, 2023 Thanks Kratmel. And I just happen to have two PWM outputs with nothing to do, until now. Quote Link to comment Share on other sites More sharing options...
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