IEC 62026-1:2000 pdf free download – Low-voltage switchgear and controlgear – Controller-device interfaces (CDls)
1Scope
This International Standard applies to interfaces between low-voltage switchgear,controlgear,and controllers (e.g. programmable controllers, personal computers, etc.).
This standard does not apply to higher level industrial communication networks that havebecome known as fieldbuses and are considered by IEC subcommittee 65C.
The purpose of this standard is to harmonize and define rules,components and requirementsof a general nature applicable to industrial CDls.Those features of the various CDl standardswhich can be considered as general have therefore been brought together in this part ofIEC 62026.
For each CDl, two main documents are necessary to determine all requirements and tests:
a) this part, referred to as “part 1” in the relevant CDl parts covering the various types of CDIs;
b) the specific CDl part of the IEC 62026 series.
A specific CDl part may omit a general requirement if it is not applicable, or it may add to it if itis inadequate in the particular case, but it shall not deviate from the requirement unless there issubstantial technical justification.
NOTE Product-specific requirements for products incorporating a CDl are given in the relevant product standards.These requirements apply in addition to those given in this International Standard.
2 Normative references
The following normative documents contain provisions which，through reference in this text,constitute provisions of this part of lEC 62026.For dated references,subsequent amendmentsto，or revisions of，any of these publications do not apply.However，parties to agreementsbased on this part of IEC 62026 are encouraged to investigate the possibility of applying themost recent editions of the normative documents indicated below.For undated references, thelatest edition of the normative document referred to applies.Members of ISO and lEC maintainregisters of currently valid International Standards.
IEC 60947-1:1999,Low-voltage switchgear and controlgear – Part 1 : General rules
IEC 61000-4-2:1995，Electromagnetic compatibility (EMC)- Part 4:Testing and measurementtechniques – Section 2:Electrostatic discharge immunity test. Basic EMC Publication 1)
IEC 61000-4-3:1995，Electromagnetic compatibility (EMC) – Part 4: Testing and measurementtechniques – Section 3:Radiated, radio-frequency，,electromagnetic field immunity test 2)
IEC 61000-4-4:1995，Electromagnetic compatibility(EMC) – Part 4:Testing and measurementtechniques – Section 4: Electrical fast transient/burst immunity test.Basic EMC Publication
IEC 61000-4-5:1995,Electromagnetic compatibility(EMC) – Part 4: Testing and measurementtechniques – Section 5: Surge immunity test
IEC 61000-4-6:1996,Electromagnetic compatibility(EMC) – Part 4:Testing and measurementtechniques – Section 6: lmmunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-6-2:1999，Electromagnetic compatibility(EMC) – Part 6: Generic standards -Section 2: lmmunity for industrial environments
CISPR 11:1997，Industrial,scientific and medical (ISM) radio-frequency equipment -Electromagnetic disturbance characteristics – Limits and methods of measurement 3
3Definitions
For the purpose of this part of lEC 62026, the following definitions apply.
3.1 change of state
process of data exchange which occurs only when a device’s or controller’s data changes stateaccording to specific change criteria
3.2 controller
programmable controller，personal computer or equivalent computing hardware in which thesoftware controlling the application or process runs
3.3 controller-device communication medium
means (such as two or more wires or fibre optic cable) utlized by devices or controllers totransfer data to other devices or controllers
NOTEA CDl that has “power on the communication medium”architecture uses two wires that also distributepower within the CDI.
3.4 controller-device interface (cDI)
arrangement of nodes and their interconnections that transport information between controllersand devices in an industrial control system