Table of contents
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X20 system User's Manual 3.10
3 Mechanical and electrical configuration...............................................................78
3.1 Dimensions....................................................................................................................................................78
3.1.1 X20 CPUs with one slot for interface modules....................................................................................... 78
3.1.2 X20 CPUs with three slots for interface modules................................................................................... 78
3.1.3 Compact CPUs and bus controllers........................................................................................................79
3.1.4 Fieldbus CPUs and expandable bus controller.......................................................................................79
3.1.4.1 With an additional slot....................................................................................................................... 79
3.1.4.2 With two additional slots....................................................................................................................79
3.1.5 I/O modules............................................................................................................................................. 80
3.1.6 CAD support............................................................................................................................................ 80
3.2 Design support.............................................................................................................................................. 81
3.2.1 Macros for ECAD systems......................................................................................................................81
3.2.2 Printing support....................................................................................................................................... 81
3.3 Installation..................................................................................................................................................... 82
3.3.1 Horizontal installation...............................................................................................................................82
3.3.2 Vertical installation...................................................................................................................................83
3.4 Wiring............................................................................................................................................................ 84
3.5 Stress relief using cable ties........................................................................................................................ 84
3.6 Shielding........................................................................................................................................................85
3.6.1 Direct shielding connection..................................................................................................................... 85
3.6.2 X20 cable shield clamp........................................................................................................................... 86
3.6.3 X20 shielding bracket..............................................................................................................................87
3.6.4 Shielding via top-hat rail or bus bar........................................................................................................88
3.7 Wiring guidelines for X20 modules with an Ethernet cable..........................................................................89
3.8 The supply concept.......................................................................................................................................90
3.8.1 Bus module rack replacement.................................................................................................................90
3.9 X20 system infrastructure............................................................................................................................. 91
3.10 Bus supply...................................................................................................................................................91
3.11 Potential groups.......................................................................................................................................... 91
3.12 Output modules with supply....................................................................................................................... 92
3.13 Bus receiver with supply.............................................................................................................................92
3.14 Supply module for internal I/O supply........................................................................................................ 92
3.16 Bus transmitter with supply.........................................................................................................................92
3.17 Internal I/O supply failure (ModuleOk)........................................................................................................92
3.18 X20 system power supply...........................................................................................................................92
3.19 X20 system protection................................................................................................................................ 93
3.19.1 Potential groups.....................................................................................................................................93
3.19.2 Supply via bus transmitter.....................................................................................................................93
3.20 X2X Link supply.......................................................................................................................................... 94
3.20.1 Extended and redundant X2X Link supply............................................................................................94
3.20.2 Example for extended X2X Link supply................................................................................................94
3.20.3 Example for redundant X2X Link supply...............................................................................................95
3.21 Safe cutoff................................................................................................................................................... 96
3.21.1 General information............................................................................................................................... 96
3.21.2 Scope of application / Standards referenced........................................................................................96
3.21.3 Intended use..........................................................................................................................................96
3.21.4 Qualified personnel................................................................................................................................96
3.21.5 Application in the X20 system...............................................................................................................97
3.21.5.1 Suitable modules..............................................................................................................................97
3.21.6 General notices..................................................................................................................................... 98
3.21.6.1 Installation notes.............................................................................................................................. 98
3.21.6.2 Timing...............................................................................................................................................98
3.21.6.3 Potential group structure..................................................................................................................99
3.21.6.4 Circuit examples...............................................................................................................................99
3.21.6.5 Wiring notices.................................................................................................................................101
3.21.7 Safety guidelines................................................................................................................................. 102
Summary of Contents for X20 System
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