IEC 61131-2:2003

INTERNATIONAL IEC
STANDARD
61131-2
Second edition
2003-02
Programmable controllers –
Part 2:
Equipment requirements and tests
Automates programmables –
Partie 2:
Spécifications et essais des équipements

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INTERNATIONAL IEC
STANDARD
61131-2
Second edition
2003-02
Programmable controllers –
Part 2:
Equipment requirements and tests
Automates programmables –
Partie 2:
Spécifications et essais des équipements

 IEC 2003  Copyright - all rights reserved
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Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 61131-2  IEC:2003(E)
CONTENTS
FOREWORD.7

INTRODUCTION.9

1 General.10

1.1 Scope and object.10

1.2 Compliance with this standard.11

1.3 Normative references.11

2 Type tests.13

2.1 Equipment to be tested (equipment under test/EUT).13
2.2 Special features for immunity and EMC tests.15
2.3 Withstand test conditions.16
2.4 Verification procedure.16
2.5 Requirements for test programmes and proper functioning verification
procedures (PFVPs) to be provided by the manufacturer .16
2.6 General conditions for tests.17
3 Terms and definitions .17
4 Normal service conditions and requirements.24
4.1 Climatic conditions and requirements .24
4.2 Mechanical service conditions and requirements .25
4.3 Transport and storage conditions and requirements .26
4.4 Electrical service conditions and requirements .27
4.5 Special conditions and requirements .28
5 Functional requirements.28
5.1 Functional power supply and memory back-up requirements .30
5.2 Digital I/Os.31
5.3 Analogue I/Os.38
5.4 Communication interface requirements.39
5.5 Main processing unit(s) and memory(ies) of the PLC-system requirements .39
5.6 Remote input/output stations (RIOSs) requirements .39
5.7 Peripherals (PADTs, TEs, HMIs) requirements .39
5.8 PLC-system self-tests and diagnostics requirements .40
5.9 Functional earthing.40
5.10 Mounting requirements.40

5.11 General marking requirements .41
5.12 Requirements for normal service and functional type tests and verifications .41
5.13 Requirements for information on normal service and function .41
6 Normal service and functional type tests and verifications .41
6.1 Climatic tests.41
6.2 Mechanical tests.43
6.3 Verification of special functional requirements for power ports and memory
back-up – Special immunity limits for power ports .45
6.4 Verification of input/output requirements .50
6.5 Verification of communication interface requirements .53
6.6 Verification of MPU requirements .53
6.7 Verification of remote I/O stations .53
6.8 Verification of peripheral (PADTs, TEs, HMIs) requirements.54
6.9 Verification of PLC-system self-tests and diagnostics.54

61131-2  IEC:2003(E) – 3 –
6.10 Verification of markings and manufacturer's documentation.54

7 General information to be provided by the manufacturer.54

7.1 Information on type and content of documentation.54

7.2 Information on compliance with this standard .55

7.3 Information on reliability.55

7.4 Information on other conditions .55

7.5 Information on shipping and storage.55

7.6 Information on a.c. and d.c. power supply .55

7.7 Information on digital inputs (current sinking) .56

7.8 Information on digital outputs for alternating currents (current sourcing).56
7.9 Information on digital outputs for direct current (current sourcing) .57
7.10 Information on analogue inputs .57
7.11 Information on analogue outputs .59
7.12 Information on communication interfaces.60
7.13 Information on main processing unit(s) and memory(ies) of the PLC-system .60
7.14 Information on remote input/output stations (RIOSs) .61
7.15 Information on peripherals (PADTs, TEs, HMIs) .62
7.16 Information on self-tests and diagnostics.62
8 Electromagnetic compatibility (EMC) requirements .62
8.1 General.62
8.2 Emission requirements.63
8.3 EMC immunity requirements.63
8.4 Requirements for EMC tests and verifications .69
8.5 Requirements for information on EMC .69
9 Electromagnetic compatibility (EMC) type tests and verifications .69
9.1 Electromagnetic compatibility-related tests.69
9.2 Test environment.70
9.3 Measurement of radiated interference .70
9.4 Measurement of conducted interference .70
9.5 Electrostatic discharge.71
9.6 Radiofrequency electromagnetic field – Amplitude modulated .72
9.7 Power-frequency magnetic fields .72
9.8 Fast transient bursts.73
9.9 High-energy surges.74
9.10 Conducted radiofrequency interference.75

9.11 Damped oscillatory wave (for zone C only) .76
9.12 Voltage drops and interruptions - Power port type tests and verifications .76
10 Electromagnetic compatibility (EMC) information to be provided by the
manufacturer .77
11 Safety requirements.78
11.1 Protection against electrical shock .78
11.2 Protection against the spread of fire .83
11.3 Limited power circuits.83
11.4 Clearance and creepage distances requirements .84
11.5 Flame-retardant requirements for non-metallic materials .90
11.6 Temperature limits.91
11.7 Enclosures.91
11.8 Field-wiring terminals constructional requirements .92

– 4 – 61131-2  IEC:2003(E)
11.9 Provisions for protective earthing .92

11.10 W iring .93

11.11 Switching devices . 94

11.12 Components . 94

11.13 Battery requirements . 95

11.14 Maximum voltage and minimum voltage .95

11.15 Markings and identification .95

11.16 Requirements for safety type tests a
...