INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 General requirements
    4.1 General considerations
    4.2 Selection of equipment
    4.3 Electrical supply
    4.4 Physical environment and operating conditions
    4.5 Transportation and storage
    4.6 Provisions for handling
    4.7 Installation and operation
5 Incoming supply conductor terminations and devices for
    disconnecting and switching off
    5.1 Incoming supply conductor terminations
    5.2 Terminal for connection to the external protective
          earthing system
    5.3 Supply disconnecting (isolating) device
    5.4 Devices for switching off for prevention of
          unexpected start-up
    5.5 Devices for disconnecting electrical equipment
    5.6 Protection against unauthorized, inadvertent
          and/or mistaken connection
6 Protection against electric shock
    6.1 General
    6.2 Protection against direct contact
    6.3 Protection against indirect contact
    6.4 Protection by the use of PELV
7 Protection of equipment
    7.1 General
    7.2 Overcurrent protection
    7.3 Overload protection of motors
    7.4 Abnormal temperature protection
    7.5 Protection against supply interruption or
          voltage reduction and subsequent restoration
    7.6 Motor overspeed protection
    7.7 Earth fault/residual current protection
    7.8 Phase sequence protection
    7.9 Protection against overvoltages due to lightning
          and to switching surges
8 Equipotential bonding
    8.1 General
    8.2 Protective bonding circuit
    8.3 Bonding for operational purposes
9 Control circuits and control functions
    9.1 Control circuits
    9.2 Control functions
    9.3 Protective interlocks
    9.4 Control functions in the event of failure
10 Operator interface and machine-mounted control devices
    10.1 General
    10.2 Push-buttons
    10.3 Indicator lights and displays
    10.4 Illuminated push-buttons
    10.5 Rotary control devices
    10.6 Start devices
    10.7 Devices for emergency stop
    10.8 Devices for emergency switching off
    10.9 Displays
11 Electronic equipment
    11.1 General
    11.2 Basic requirements
    11.3 Programmable equipment
12 Controlgear: location, mounting and enclosures
    12.1 General requirements
    12.2 Location and mounting
    12.3 Degrees of protection
    12.4 Enclosures, doors and openings
    12.5 Access to controlgear
13 Conductors and cables
    13.1 General requirements
    13.2 Conductors
    13.3 Insulation
    13.4 Current-carrying capacity in normal service
    13.5 Conductor and cable voltage drop
    13.6 Minimum cross-sectional area
    13.7 Flexible cables
    13.8 Collector wires, collector bars and slip-ring
          assemblies
14 Wiring practices
    14.1 Connections and routing
    14.2 Identification of conductors
    14.3 Wiring inside enclosures
    14.4 Wiring outside enclosures
    14.5 Ducts, connection boxes and other boxes
15 Electric motors and associated equipment
    15.1 General requirements
    15.2 Motor enclosures
    15.3 Motor dimensions
    15.4 Motor mounting and compartments
    15.5 Criteria for motor selection
    15.6 Protective devices for mechanical brakes
16 Accessories and lighting
    16.1 Accessories
    16.2 Local lighting of the machine and equipment
17 Marking, warning signs and reference designations
    17.1 General
    17.2 Warning signs
    17.3 Functional identification
    17.4 Marking of control equipment
    17.5 Reference designations
18 Technical documentation
    18.1 General
    18.2 Information to be provided
    18.3 Requirements applicable to all documentation
    18.4 Basic information
    18.5 Installation diagram
    18.6 Block (system) diagrams and function diagrams
    18.7 Circuit diagrams
    18.8 Operating manual
    18.9 Maintenance manual
    18.10 Parts list
19 Testing and verification
    19.1 General
    19.2 Continuity of the protective bonding circuit
    19.3 Insulation resistance tests
    19.4 Voltage tests
    19.5 Protection against residual voltages
    19.6 Functional tests
    19.7 Retesting
Figures
1 Block diagram of a typical manufacturing system
2 Block diagram of a typical machine
3 Example of equipotential bonding for electrical
    equipment of a machine
Tables
1 Minimum cross-sectional area of the external protective
    copper conductor
2 Colour-coding for push-button actuators and their
    meanings
3 Colours for indicator lights and their meanings with
    respect to the condition of the machine
4 Maximum allowable conductor temperatures under normal
    and short-circuit conditions
5 Current carrying capacity of PVC insulated copper
    conductors or cables under steady-state conditions in
    an ambient air temperature of +40 deg C for different
    methods of installation
6 Minimum cross-sectional areas of copper conductors
7 Derating factors for cables wound on drums
8 Minimum permitted bending radii for the forced guiding
    of flexible cables
9 Verification of continuity of the protective bonding
    circuit
Annexes
A Examples of machines covered by this part of IEC 60204
B Inquiry form for the electrical equipment of machines
C Current-carrying capability and overcurrent protection
    of conductors and cables in the electrical equipment
    of machines
D Explanation of emergency operation functions
E Bibliography
ZA Normative references to international publications with
    their corresponding European publications
Index