IEC 60073:2002 pdf download

IEC 60073:2002 pdf download.Basic and safety principles for man-machine interface, marking and identification – Coding principles for indicators and actuators
1 Scope
This International Standard establishes general rules for assigning particular meanings to certain visual, acoustic and tactile indications in order to – increase the safety of persons, property and/or the environment through the safe monitoring and control of the equipment or process; – facilitate the proper monitoring, control and maintenance of the equipment or process; – facilitate the rapid recognition of control conditions and actuator positions. This standard is for general application: – from simple cases such as single indicator lights, push-buttons, mechanical indicators, light emitting diodes (LEDs) or video display screens to extensive control stations which may include a wide variety of devices for controlling an equipment or process; NOTE Application of the general coding principles for displays on screens should be carried out without modification. – where the safety of persons, property and/or the environment is involved, and also where the above-mentioned codes are used to facilitate the proper monitoring and controlling of equipment; – where a particular kind of coding is to be assigned by a technical committee to a special function.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60027 (all parts), Letter symbols to be used in electrical technology IEC 60050(441 ), International Electrotechnical Vocabulary (IEV) − Chapter 441: Switchgear, controlgear and fuses IEC 60050(721 ), International Electrotechnical Vocabulary (IEV) − Chapter 721: Telegraphy, facsimile and data communication IEC 60050(845), International Electrotechnical Vocabulary (IEV) Lighting IEC 6041 7 (all parts), Graphical symbols for use on equipment
3 Definitions
For the purposes of this standard, the following definitions apply. 3.1 coding systematic representation of specific signals or values by another set of signals, which has to conform to a definite set of rules [IEC 61 31 0-1 : 1 995, definition 3.22] 3.2 indicator mechanical, optical or electrical device or a part of device providing visual, acoustic or tactile information 3.2.1 acoustic signal message conveyed by means of tone, frequency and intermittency, emanating from a sound source 3.2.2 tactile signal message conveyed by means of vibration, force, surface roughness, contour or position 3.2.3 visual signal message conveyed by means of brightness, contrast, colour, shape, size or position 3.3 actuator part of the actuating system which receives a human actuating action [IEC 60447: 1 993, definition 3.1 ] NOTE For the purposes of this standard, the actuator in the case of an interactive screen display is considered to be that part of the screen display which represents the actuator function. 3.4 mechanical indicator indicator which forms an integral part of a mechanical or electromechanical switching device (e.g. circuit-breaker) and which indicates whether it is in the OPEN or CLOSED position or an intermediate position (e.g. star position of a star-delta starter) but which is not intended as a manual actuator 3.5 man-machine interface (MMI) parts of the equipment intended to provide a direct means of communication between the operator and the equipment, and which enable the operator to control and monitor the operation of the equipment NOTE Such parts may include manually operated actuators, indicators and screens. [IEC 60447: 1 993, definition 3.3] 3.6 signal light object or apparatus designed to emit a light signal [IEV 845-1 1 -05] 3.7 light emitting diode (LED) solid-state device embodying a p-n junction, emitting optical radiation when excited by an electric current [IEV 845-04-40] 3.8 illuminated actuator actuator with an integrated light source giving visual indication by illumination. The operation of the light source may be related to or independent of the actuator action 3.9 hue attribute of a visual sensation according to which an area appears to be similar to one of the perceived colours, red, yellow, green, and blue, or to a combination of two of them [IEV 845-02-35] 3.1 0 brightness attribute of a visual sensation according to which an area appears to emit more or less light [IEV 845-02-28]