Standards Development

Scope

This part of IEC 60947 applies to sensing devices with switching element outputs. Figure 1 shows the schematic principle of a sensing device according the IEC 60947-5 series.

Figure 1 – Sensing devices schematic block diagram structure

Products covered by the scope of this document are not subjected to defined behaviours under fault conditions.

Note: IEC 60947-5-3, Ed.3 and IEC 60947-5-7, Ed.2 describe additional proximity devices that are a subset of sensing devices.

NOTE 1 Additional requirements apply to sensing devices with defined behaviour (proximity devices with defined behaviour under fault conditions, PDDB) in accordance with IEC 60947-5-3 [1].

These sensing devices are self-contained, have semiconductor/electronic switching element(s) and are intended to be connected to circuits, the rated voltage of which does not exceed 250 V 50 Hz/60 Hz AC RMS or 300 V DC.

Examples of typical applications for in-scope products:

factory automation and machinery industry; logistic and packaging industry; conveyor belts, lifts; process industry; power plants.

Sensor devices may also optionally include additional wireless functions that do not affect the operation of the sensor principle.

NOTE 2 CV: additional wireless functions are e.g. wireless IO-link communication, Wifi based callibration, ...

Special applications (e.g. corrosive atmosphere) can cause additional requirements.

This document is not intended to cover proximity switches with analogue outputs.

The object of this document is to state for proximity switches:

definitions; classification; characteristics; product information; normal service, mounting and transport conditions; constructional and performance requirements; tests to verify rated characteristics.

Products covered by the scope of this document are expected to be selected, installed, and maintained by skilled personnel only.