EN 50227:1997

Control circuit devices and switching elements proximity sensors, d.c. interface for proximity sensors and switching amplifiers (NAMUR)

General information

99.60 Withdrawal effective   Jan 1, 2003

CENELEC

CLC/TC 17B Low-voltage switchgear and controlgear

European Norm

29.120.40   Switches

Scope

This standard applies to proximity sensors connected for operation by a two-wire connecting conductor to the control input of a switching amplifier. The switching amplifier contains a d.c. source to supply the control circuit and is controlled by the variable internal resistance of the proximity sensor. Note 1. These devices can be used in an explosive atmosphere if they also comply with EN 50020 "Electrical equipment for explosive atmospheres and intrinsic safety 'i'". 2. These devices have been defined by the German organization "Normenausschuss für Mess-und Regelungstechnik (NAMUR)"

Related legislation

Legislation related to this standard

2004/108/EC

Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC

Harmonized/Supporting
2006/95/EC

Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)

Life cycle

NOW

WITHDRAWN
EN 50227:1997
99.60 Withdrawal effective
Jan 1, 2003

REVISED BY

PUBLISHED
EN 60947-5-6:2000