Hi!
I have a project, where I'm installing a programmable logic (with internet) and some sensors to a coffee machine (large vending machine) to monitor the different substances. I installed a Murr power supply (230 VAC to 24 VDC) to provide power for the sensor and the logic. The question is, can I ground the output (let say the negative terminal) of the power supply to the machine's casing, which is also connected to the power supply's input ground? I want to do this, because I want to connect some sensor from the coffee machine itself to the logic, but as it is, the circuit where the logic and the power supply are connected is "floating" in reference to the coffee machine's circuit. This causes problems, because the logic can't really detect a sensor signal in the other circuit.
So is it allowed to tie the power supply's input ground to same potential as the negative output terminal? (the input has three terminal's: L,N and GND)
I have a project, where I'm installing a programmable logic (with internet) and some sensors to a coffee machine (large vending machine) to monitor the different substances. I installed a Murr power supply (230 VAC to 24 VDC) to provide power for the sensor and the logic. The question is, can I ground the output (let say the negative terminal) of the power supply to the machine's casing, which is also connected to the power supply's input ground? I want to do this, because I want to connect some sensor from the coffee machine itself to the logic, but as it is, the circuit where the logic and the power supply are connected is "floating" in reference to the coffee machine's circuit. This causes problems, because the logic can't really detect a sensor signal in the other circuit.
So is it allowed to tie the power supply's input ground to same potential as the negative output terminal? (the input has three terminal's: L,N and GND)