IEC/ EN 60073
IEC 60073 lays out general rules for allocating particular meaning to visual acoustic and tactile indications so that safety of person/property can be enhanced. Apart from it, proper monitoring, control and maintenance of the equipment can be encouraged.
This standard is applied to:
- Single indicator light
- Push buttons
- Mechanical indicators
- LED’s or video display screens
- Safety of person, property is evolved and also where codes are used to facilitate the proper monitoring and controlling of equipment
- Where particular kind of coding is to be assigned by technical committee for a special function.
Meaning of color, shape & acoustic – general principal
| Color | Shape | Acoustic | Meaning | ||
| Safety of person/ Environment | Condition of Process | State of equipment | |||
| Red | -Sweeping sound -Bursts of sounds | Danger | Emergency | Faulty | |
| Yellow | Pattern of segments with constant level | Warning/caution | Abnormal | Abnormal | |
| Green | Continuous sound with constant level | Safe | Normal | Normal | |
| Blue | Alternate sound pitch | Mandatory Significance | |||
| White/grey/Black | Other sounds | No specific meaning assigned | |||
There are 3 indication modes
- Alerting
- Indication
- Confirmation
| Acuator type | Identified by colour | exception |
| Non illuminating acuators | ||
| Emergency /normal (stop/off) | Red | Exceptions are allowed when red color is not available. |
| STOP/OFF | White, grey black | Red can be used but green is not permitted |
| START/ON | White, grey, black | Green can be used but red is not permitted |
| RESET | Blue, white black ,grey | |
| Use of black and white specific meaning | White, black | White –start/on Black- stop/off |
| Illuminating Acuators | ||
| Type a | Have the same colour wheather or not they are lit | For indication |
| Type b | Have a single colour when lit that is different from the colour when not lit and both colour have meaning | For confirmation |
| Type c | Have more than one possible colour of lightning |
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