IEC 60447 pdf download

IEC 60447 pdf download Basic and safety principles for man-machine interface, marking and identification – Actuating principles
1scope
This International Standard establishes general actuating principles for manually operatedactuators forming part of the man-machine interface associated with electrical equipment, inorder to:
increase the safety (e.g. of persons, property, environment) through the safe operation ofthe equipment;
-facilitate the proper and timely operation of the actuators.
These principles apply，not only for the operation of electrical equipment，machines, orcomplete plant under normal conditions, but also under fault or emergency conditions.
This standard is for general application，from simple cases such as single actuators (e.g.push-buttons) to multiple actuators, forming part of a large assembly of electrical and non-electrical equipment, or part of a central process control station.
This standard establishes correlations between the function of an actuator and its direction ofactuating or location in relation to other actuators.
ln the absence of particular rules, this standard may also be applied to actuators operated bya part of the human body other than the hand (e.g. to foot-operated devices).
2Normative 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 editionof the referenced document (including any amendments) applies.
IEC 60050(721),International Electrotechnical Vocabulary (IEv) – Chapter 721:Telegraphy,facsimile and data communication
IEC 60073,Basic and safety principles for man-machine interface，marking and identification- Coding principles for indicators and actuators
IEC Guide 104,The preparation of safety publications and the use of basic safety publicationsand group safety publications
ISOIEC Guide 51, Safety aspects – Guidelines for their inclusion in standards
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
actuator
part of the actuating system which receives a human actuating action
NOTE 1 The actuator may take the form of a handle, knob, push-button, push-push button, push-pull button,roller, plunger, mouse, light pen, keyboard, touch sensitive screen.
NOTE 2 The definition of an actuator is based on IEV 441 -1 5-22 and, for the purposes of this standard, is narrowed to human actuation.
3.1.1
monofunction actuator
one or a set of actuators correlated to one final effect (e.g. by direction of movement, or by disposition of actuators)
3.1.2
multifunction actuator
one or a set of actuators alternately correlated to different final effects (e.g. by direction of movement, or by disposition of actuators)
3.2
keyboard
arrangement of keys (typing or function keys) laid out in a specified manner
3.2.1
numeric keyboard
arrangement of keys representing numerals
3.2.2
alphanumeric keyboard
arrangement of keys representing a set of characters, e.g.:
– letters of the latin alphabet (A to Z);
– digits (0 to 9);
– non-printing graphic space;
– punctuation signs and other graphics, as required