BS EN 61131-2:2007

INTRODUCTION
1 General
   1.1 Scope and object
   1.2 Compliance with this standard
   1.3 Normative references
2 Type tests
   2.1 Equipment to be tested (equipment under test/EUT)
   2.2 Special features for immunity and EMC tests
   2.3 Withstand test conditions
   2.4 Verification procedure
   2.5 Requirements for test programmes and proper
         functioning verification procedures (PFVPs)
         to be provided by the manufacturer
   2.6 General conditions for tests
3 Terms and definitions
4 Normal service conditions and requirements
   4.1 Climatic conditions and requirements
         4.1.1 Operating ambient air temperature
         4.1.2 Relative humidity
         4.1.3 Altitude
         4.1.4 Pollution degree
   4.2 Mechanical service conditions and requirements
         4.2.1 Vibrations
         4.2.2 Shock
         4.2.3 Free falls (portable and hand-held equipment)
   4.3 Transport and storage conditions and requirements
         4.3.1 Temperature
         4.3.2 Relative humidity
         4.3.3 Altitude
         4.3.4 Free falls (PLC units in manufacturer's
                 original packaging)
         4.3.5 Other conditions
   4.4 Electrical service conditions and requirements
         4.4.1 AC and d.c. equipment power supply
         4.4.2 Overvoltage category, control of transient
                 overvoltages
         4.4.3 Non-periodic overvoltages
   4.5 Special conditions and requirements
5 Functional requirements
   5.1 Functional power supply and memory back-up
         requirements
         5.1.1 AC and d.c. power supply
         5.1.2 Memory back-up
   5.2 Digital I/Os
         5.2.1 Digital inputs (current sinking)
         5.2.2 Digital outputs for alternating currents
                 (current sourcing)
         5.2.3 Digital outputs for direct current (current
                 sourcing)
   5.3 Analogue I/Os
         5.3.1 Analogue inputs
         5.3.2 Analogue outputs
   5.4 Communication interface requirements
   5.5 Main processing unit(s) and memory(ies) of the
         PLC-system requirements
   5.6 Remote input/output stations (RIOSs) requirements
   5.7 Peripherals (PADTs, TEs, HMIs) requirements
   5.8 PLC-system self-tests and diagnostics requirements
   5.9 Functional earthing
   5.10 Mounting requirements
   5.11 General marking requirements
         5.11.1 Functional identifications
         5.11.2 Module location and module identifications
         5.11.3 Functional earth terminals markings
   5.12 Requirements for normal service and functional
         type tests and verifications
   5.13 Requirements for information on normal service
         and function
6 Normal service and functional type tests and verifications
   6.1 Climatic tests
   6.2 Dry-heat and cold withstand tests
         6.2.1 Variation of temperature
         6.2.2 Cyclic damp heat withstand test
   6.3 Mechanical tests
         6.3.1 Vibration (type test associated with normal
                 service conditions)
         6.3.2 Shock (type test associated with normal
                 service conditions)
         6.3.3 Free fall (type test associated with normal
                 service conditions)
         6.3.4 Free fall (type test associated with
                 transport and storage conditions)
         6.3.5 Plugging/unplugging of removable units
   6.4 Verification of special functional requirements for
         power ports and memory back-up - Special immunity
         limits for power ports
         6.4.1 Verification of functional equipment power
                 input port (a.c. or d.c.)
         6.4.2 External energy supply variation tests
                 (immunity tests)
         6.4.3 Improper equipment power supply connection
                 tests
         6.4.4 Verification of memory back-up requirements
   6.5 Verification of input/output requirements
         6.5.1 General
         6.5.2 Verification of digital inputs
         6.5.3 Verification of digital outputs
         6.5.4 Verification of analogue I/Os
   6.6 Verification of communication interface requirements
   6.7 Verification of MPU requirements
   6.8 Verification of remote I/O stations
         6.8.1 Response time test
         6.8.2 Loss of communication test
         6.8.3 Verification of other requirements
   6.9 Verification of peripheral (PADTs, TEs, HMIs)
         requirements
   6.10 Verification of PLC-system self-tests and
         diagnostics
   6.11 Verification of markings and manufacturer's
        documentation
7 General information to be provided by the manufacturer
   7.1 Information on type and content of documentation
         7.1.1 Information on catalogues and datasheets
         7.1.2 Information on user's manuals
         7.1.3 Information on technical documentation
   7.2 Information on compliance with this standard
   7.3 Information on reliability
   7.4 Information on other conditions
   7.5 Information on shipping and storage
   7.6 Information on a.c. and d.c. power supply
   7.7 Information on digital inputs (current sinking)
   7.8 Information on digital outputs for alternating
         currents (current sourcing)
   7.9 Information on digital outputs for direct current
         (current sourcing)
   7.10 Information on analogue inputs
         7.10.1 Information on analogue input static
                 characteristics
         7.10.2 Information on analogue input dynamic
                 characteristics
         7.10.3 Information on analogue input general
                 characteristics
         7.10.4 Information on analogue input miscellaneous
                 characteristics
   7.11 Information on analogue outputs
         7.11.1 Information on analogue output static
                 characteristics
         7.11.2 Information on analogue output dynamic
                 characteristics
         7.11.3 Information on analogue output general
                 characteristics
         7.11.4 Information on analogue output miscellaneous
                 characteristics
   7.12 Information on communication interfaces
   7.13 Information on main processing unit(s) and
         memory(ies) of the PLC-system
   7.14 Information on remote input/output stations (RIOSs)
   7.15 Information on peripherals (PADTs, TEs, HMIs)
   7.16 Information on self-tests and diagnostics
8 Electromagnetic compatibility (EMC) requirements
   8.1 General
   8.2 Emission requirements
         8.2.1 General requirements for emission
         8.2.2 Emission limits in the low-frequency range
         8.2.3 Emission limits in the high-frequency range
   8.3 EMC immunity requirements
         8.3.1 General
         8.3.2 Performance criteria
         8.3.3 Immunity levels
         8.3.4 Voltage dips and interruptions power ports
   8.4 Requirements for EMC tests and verifications
   8.5 Requirements for information on EMC
9 Electromagnetic compatibility (EMC) type tests and
   verifications
   9.1 Electromagnetic compatibility-related tests
   9.2 Test environment
   9.3 Measurement of radiated interference
   9.4 Measurement of conducted interference
   9.5 Electrostatic discharge
   9.6 Radiofrequency electromagnetic field - Amplitude modulated
   9.7 Power-frequency magnetic fields
   9.8 Fast transient bursts
   9.9 High-energy surges
   9.10 Conducted radiofrequency interference
   9.11 Damped oscillatory wave (for zone C only)
   9.12 Voltage dips and interruptions
10 Electromagnetic compatibility (EMC) information to be
   provided by the manufacturer
11 Safety requirements
   11.1 Equipment types and protection
         11.1.1 Open PLC-system equipment
         11.1.2 Enclosed PLC-system equipment
   11.2 Protection against electrical shock
         11.2.1 Permissible limits for accessible parts
         11.2.2 Dielectric strength
         11.2.3 Ports requiring protection
         11.2.4 Protection in normal condition
         11.2.5 Protection in single-fault condition
         11.2.6 Secondary circuits which do not pose a risk
                 of electrical shock
   11.3 Protection against the spread of fire
         11.3.1 Limited power circuits
   11.4 Clearance and creepage distances requirements
         11.4.1 Clearances relating to overvoltage
                 category II
         11.4.2 Clearances for micro-environment where
                 voltages are known and controlled
         11.4.3 Creepage distances for basic and
                 supplementary insulation
         11.4.4 Creepage distances for double/reinforced
                 insulation
         11.4.5 Creepage for field-wiring terminals
   11.5 Flame-retardant requirements for non-metallic
         materials
         11.5.1 Non-metallic enclosure material
         11.5.2 Non-metallic material supporting live parts
         11.5.3 Non-metallic parts
         11.5.4 Decorative and labelling materials
         11.5.5 Internal wiring or interconnection cables
   11.6 Temperature limits
   11.7 Enclosures
         11.7.1 Open equipment
         11.7.2 Enclosed equipment
   11.8 Operator-accessible hazardous live field-wiring
         terminal constructional requirements
   11.9 Provisions for protective earthing
         11.9.1 Protective earthing requirements for
                 enclosed equipment
         11.9.2 Protective earthing requirements for
                 open equipment
   11.10 Wiring
         11.10.1 Internal wiring
         11.10.2 Interconnection wiring
         11.10.3 Equipment power input cord
   11.11 Switching devices
   11.12 Components related to safety requirements
   11.13 Battery requirements
   11.14 Maximum voltage and minimum voltage
   11.15 Markings and identification
         11.15.1 External wiring terminals identification
         11.15.2 Live parts
         11.15.3 Protective earth terminals markings
         11.15.4 Enclosed Class II equipment
         11.15.5 Equipment supplied by SELV/PELV
         11.15.6 Rating information
   11.16 Requirements for safety type tests and verifications
   11.17 Requirements for safety routine tests and
         verifications
         11.17.1 Requirement for dielectric strength
                 verification
         11.17.2 Requirement for protective earthing
                 verification
   11.18 Requirements for information on safety
12 Safety type tests and verifications
   12.1 Safety-related mechanical tests and verifications
         12.1.1 Impact withstand test
         12.1.2 Operator accessibility tests
         12.1.3 General examination of openings
         12.1.4 Wire flexing test
         12.1.5 Temperature test
         12.1.6 Protective coating test
         12.1.7 Rigidity test
         12.1.8 Clearance and creepage verification
         12.1.9 Field-wiring terminals constructional
                 verification
   12.2 Safety-related electrical tests
         12.2.1 Dielectric withstand verification test
         12.2.2 Protective earthing continuity test
         12.2.3 Stored energy injury risk test
         12.2.4 Overload test
         12.2.5 Endurance test
   12.3 Single-fault condition tests
         12.3.1 Single-fault condition - General
         12.3.2 Single-fault condition - Breakdown of
                 components test
         12.3.3 Single-fault condition - Protective
                 impedance test
         12.3.4 Single-fault condition - isolation
                 transformers test
   12.4 Limited power circuits test
13 Safety routine tests
   13.1 Dielectric withstand test
   13.2 Dielectric withstand verification test
   13.3 Protective earthing test
14 Safety information to be provided by the manufacturer
   14.1 Information on evaluation of enclosures for open
         equipment (power dissipation)
   14.2 Information on mechanical terminal connection
Annex A (informative) - Illustration of PLC-system
                        hardware definitions
Annex B (informative) - Digital input standard operating
                        range equations
Annex C (normative) - Test tools
Annex D (informative) - Zone C - EMC immunity levels
Annex E (informative) - Overvoltage example
Annex ZA (normative) - Normative references to international
                       publications with their corresponding
                       European publications
Annex ZZ (informative) - Coverage of Essential Requirements
                         of EC Directives
Bibliography

Specifies requirements and related tests for programmable controllers (PLCs) and their associated peripherals, which have as their intended use the control and command of machines and industrial processes.

IEC 61131-2:2007 specifies requirements and related tests for programmable controllers (PLCs) and their associated peripherals (for example, programming and debugging tools (PADTs), human-machine interfaces (HMIs), etc.) which have as their intended use the control and command of machines and industrial processes. It establishes the definitions and identifies the principal characteristics relevant to the selection and application of PLCs and their associated peripherals. It specifies the minimum requirements for functional, electrical, mechanical, environmental and construction characteristics, service conditions, safety, EMC, user programming and tests applicable to PLCs and the associated peripherals. This third edition of IEC 61131-2 cancels and replaces the second edition published in 2003 and constitutes a technical revision. This third edition includes the following technical changes:
- Correction of the tests of Clause 6 and 9;
- Change of EMC requirements in Clause 8;
- New organization of Clause 11. This bilingual version (2012-05) corresponds to the monolingual English version, published in 2007-07.