What's the correct practice for resetting a safety circuit? We currently have machines in the plant that has a hard wired reset button. This button must be pushed to reset the safety relay (or safety PLC). I always thought this is best practice.
Now some machine builder and colleagues are bringing machines without this button. Instead they want to use the 'Start' button on the HMI to reset the safety circuit. Is this acceptable? Does the reset has to be a discretely hard wire control button?
Now some machine builder and colleagues are bringing machines without this button. Instead they want to use the 'Start' button on the HMI to reset the safety circuit. Is this acceptable? Does the reset has to be a discretely hard wire control button?