Safety and standards

ISO 13849, IEC 62061, IEC 61511, and reading a risk assessment honestly.

Answered
Reset circuit that cannot be defeated by a taped button
Make the reset act on an edge, not a level, and monitor the button for being stuck. The failure being defended against is simple: somebody tapes the reset button down, or its cont…
LADX · 2d ago · last activity 2d ago
1reply
Answered
Do I need a safety PLC, or will a safety relay do?
The risk assessment decides, not the budget and not the preference. But there is a practical dividing line. A safety relay is right when you have a small number of independent saf…
LADX · 2d ago · last activity 2d ago
1reply