Content • iii
CONTENT
1Important Comments .................................................................................4
1.1 Legal Principles........................................................................................4
1.1.1 Copyright............................................................................................. 4
1.1.2 Personnel Qualification .......................................................................4
1.1.3 Intended Use ........................................................................................4
1.2 Symbols....................................................................................................5
1.3 Number Notation......................................................................................5
1.4 Safety Notes .............................................................................................6
1.5 Scope ........................................................................................................6
2I/O Modules .................................................................................................7
2.1 Analog Output Modules ...........................................................................7
2.1.1 750-585 [2 AO 0-20 mA EEx i] ..........................................................7
2.1.1.1 View................................................................................................7
2.1.1.2 Description......................................................................................7
2.1.1.3 Display Elements ............................................................................9
2.1.1.4 Schematic Diagram.........................................................................9
2.1.1.5 Technical Data ..............................................................................10
2.1.1.6 Process Image ...............................................................................12
2.1.1.6.1 Standard Data Format ..............................................................12
3Use in Hazardous Environments .............................................................13
3.1 Foreword ................................................................................................13
3.2 Protective measures................................................................................13
3.3 Classification meeting CENELEC and IEC...........................................13
3.3.1 Divisions............................................................................................13
3.3.2 Explosion protection group ...............................................................14
3.3.3 Unit categories................................................................................... 15
3.3.4 Temperature classes...........................................................................15
3.3.5 Types of ignition protection ..............................................................16
3.4 Classifications meeting the NEC 500.....................................................17
3.4.1 Divisions............................................................................................17
3.4.2 Explosion protection groups..............................................................17
3.4.3 Temperature classes...........................................................................18
3.5 Identification ..........................................................................................19
3.5.1 For Europe .........................................................................................19
3.5.2 For America.......................................................................................20
3.6 Installation regulations ...........................................................................21
