Rule of Thumb: The normal speed should be approximately four times faster than the slow speed .
standard, titled "Basic and safety principles for man-machine interface, marking and identification – Coding principles for indicators and actuators," establishes the global rules for how machines communicate with people through visual, acoustic, and tactile signals. IEC Webstore Core Purpose of IEC 60073 iec 60073 pdf
: Emergency, danger, or fault. Used for critical conditions like a DC supply failure or a trip condition that requires immediate action . Rule of Thumb: The normal speed should be
: Ensuring coding principles remain uniform throughout a plant or process to prevent operator confusion. Used for critical conditions like a DC supply
Used for warnings or conditional alerts. Why You Need the Official IEC 60073 PDF
No. Clause 5.2 explicitly reserves red for emergency and normal stop. Using blue would violate the standard.
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