NEMA IA 2.2:2005

FOREWORD
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
   4.2 Mechanical service conditions and requirements
   4.3 Transport and storage conditions and requirements
   4.4 Electrical service conditions and requirements
   4.5 Special conditions and requirements
5 Functional requirements
   5.1 Functional power supply and memory back-up
         requirements
   5.2 Digital I/Os
   5.3 Analogue I/Os
   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
   5.12 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 Mechanical tests
   6.3 Verification of special functional requirements
         for power ports and memory back-up - Special
         immunity limits for power ports
   6.4 Verification of input/output requirements
   6.5 Verification of communication interface requirements
   6.6 Verification of MPU requirements
   6.7 Verification of remote I/O stations
   6.8 Verification of peripheral (PADTs, TEs, HMIs) requirements
   6.9 Verification of PLC-system self-tests and diagnostics
   6.10 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
   7.2 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
   7.11 Information on analogue outputs
   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
   8.3 EMC immunity requirements
   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 drops and interruptions - Power port type
         tests and verifications
10 Electromagnetic compatibility (EMC) information to be
         provided by the manufacturer
11 Safety requirements
   11.1 Protection against electrical shock
   11.2 Protection against the spread of fire
   11.3 Limited power circuits
   11.4 Clearance and creepage distances requirements
   11.5 Flame-retardant requirements for non-metallic materials
   11.6 Temperature limits
   11.7 Enclosures
   11.8 Field-wiring terminals constructional requirements
   11.9 Provisions for protective earthing
   11.10 Wiring
   11.11 Switching devices
   11.12 Components
   11.13 Battery requirements
   11.14 Maximum voltage and minimum voltage
   11.15 Markings and identification
   11.16 Requirements for safety type tests and verifications
   11.17 Requirements for safety routine tests and verifications
   11.18 Requirements for information on safety
12 Safety type tests and verifications
   12.1 Safety-related mechanical tests and verifications
   12.2 Safety-related electrical tests
   12.3 Single-fault condition test - General
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
Bibliography
Figures
Tables

Specifies requirements and related tests for PLC and their associated peripherals, such as programming and debugging tools and human-machine interfaces, which have as their intended use the control and command of machines and industrial processes.