[Solved] Reading the AC OK and Battery Low status of the DRC-60A power supply with ESP

Hey,

How could I read the status of the outputs:
- AC OK
- Battery Low
of the MeanWell DRC-60A power supply (https://www.meanwell-web.com/content/files/pdfs/productPdfs/MW/DRC-60/DRC-60-spec.pdf)?

I would like to do this with the ESP32/ESP8266.
I am concerned with the electrical part of this project. Which physical components do I need in order to be able to connect these outputs to the ESP?

Thanks in advance for your answer.

There should be a short circuit when the action is triggered.

From what can be seen in the documentation these are relay outputs. So as a colleague has pointed out sosarek e.g. when the battery is discharged there should be a short circuit between the terminals "Bat. Low". Therefore, practically nothing is needed to read the states of these outputs via, for example, the ESP32. It would therefore be sufficient to configure the GPIO lines as inputs with internal pull-up and connect e.g. one terminal of e.g. the "Bat. Low" to ground and the other to the ESP32 line in question. However, as these are relay outputs, contact damping would need to be included in the software.

Thank you very much.
So some kind of program debounce?

Greetings
Marcin

baracha wrote:

So some kind of software debounce?

Yes, especially if changes in the states of these lines were to be detected via interrupts.

baracha wrote:

Some sort of software debounce?

On ESP32 preferably using interrupts. Example:
https://www.switchdoc.com/2018/04/esp32-tutorial-debouncing-a-button-press-using-interrupts/

As suggested by colleagues on the forum, no additional components were needed to read the information from the power supply.