Iec 60073 Pdf

Defines physical identification methods, such as the shape or texture of a button, to help operators distinguish controls without looking. Technical Details

Color is the most effective means of attracting attention, but it must be used strictly according to the defined meanings: Safety Meaning Condition of Process/Equipment Emergency or Fault (e.g., E-Stop activated) Yellow Abnormal condition or transition state Green Normal condition; "Go" or circuit healthy Blue Requires specific operator action White No specific safety meaning; often used for auxiliary states iec 60073 pdf