EN 50295:1999

1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
      3.1 Definitions
      3.2 Symbols and abbreviations
4 Classification
      4.1 Overview
      4.2 Components and interfaces
5 Characteristics
      5.1 AS-i transmission system
      5.2 AS-i topology
      5.3 Data transmission
      5.4 AS-i transactions
      5.5 Error detection
6 Product information
      6.1 Nature of information
      6.2 Marking
7 Normal service, mounting and transport conditions
      7.1 Normal service conditions
      7.2 Conditions during transport and storage
8 Constructional and performance requirements
      8.1 AS-i power supply
      8.2 AS-i slave
      8.3 AS-i master
      8.4 Electromechanical requirements
      8.5 Electromagnetic compatibility (EMC)
9 Tests
      9.1 Kind of tests
      9.2 Test of the AS-i power supply
      9.3 Test of an AS-i slave
      9.4 Test of a master
      9.5 Test of electromechanical components
Annex A (normative) Slave profiles
Annex B (normative) Master profiles

This standard specifies requirements for a bit-oriented interface system between a single controlling device and control circuit devices or switching elements as defined in EN 60947-1, connected by an unshielded, untwisted two-wire cable carrying data and power. It also enables the interchangeability of components which have such interfaces. This standard specifies: requirements for interfaces and for electromechanical structures for slaves and masters; performance of slaves, electromechanical structures and masters under normal service conditions; constructional and performance requirements; tests to verify conformance to the requirements. Specific requirements for the various profiles for slaves and masters are given in annexes A and B. NOTE 1: The standardized low-voltage switchgear and controlgear products covered by the EN 60947 series are: EN 60947-1: General rules; EN 60947-2: Circuit-breakers; EN 60947-3: Switches, disconnectors, switch-disconnectors and fuse-combination units; EN 60947-4:Contactors and motor-starters; EN 60947-5: Control-circuit devices and switching elements; EN 60947-6: Multiple function equipment; EN 60947-7: Ancillary equipment. NOTE 2: Where inputs and outputs (I/O) are described in this standard, their meaning is relative to the master. The meaning relative to the application is the opposite