BS EN 61131-2:2007
Current
The latest, up-to-date edition.
Programmable controllers Equipment requirements and tests
Hardcopy , PDF
English
31-01-2008
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
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