GFK-2956A November 2017 i
Table of Contents
1.1 REVISIONS IN THIS MANUAL ................................................................................................................................................. 3
1.2 MODULES SWITCHABLE BY EP-19XX ................................................................................................................................. 4
2.1 GENERAL SAFETY NOTICE ..................................................................................................................................................... 5
2.1.1 Electrostatic Discharge ......................................................................................................................................... 5
2.1.2 Open Equipment ...................................................................................................................................................... 5
2.1.3 Fusing............................................................................................................................................................................ 5
2.1.4 Earthing (Functional Earth FE) ........................................................................................................................... 6
2.1.5 Shielding ...................................................................................................................................................................... 6
2.2 INTENDED USE ........................................................................................................................................................................ 6
2.3 USE IN A POTENTIALLY EXPLOSIVE ATMOSPHERE ............................................................................................................. 6
2.3.1 ATEX Zone 2 ............................................................................................................................................................... 7
2.3.2 ATEX Marking ............................................................................................................................................................ 7
2.4 NOTES ON FUNCTIONAL SAFETY.......................................................................................................................................... 7
2.4.1 Safety Integrity Level (SIL) .................................................................................................................................... 7
2.4.2 Performance Level (PL) .......................................................................................................................................... 7
2.4.3 Safety Categories ..................................................................................................................................................... 7
2.5 LEGAL NOTICE ......................................................................................................................................................................... 8
2.6 REQUIREMENTS ON SENSORS/SIGNAL GENERATORS ...................................................................................................... 8
3.1 SAFETY FUNCTION .................................................................................................................................................................. 9
3.2 SAMPLE DESIGN .................................................................................................................................................................. 10
3.3 TRANSITION .......................................................................................................................................................................... 11
3.4 SAFETY LEVEL ....................................................................................................................................................................... 11
4.1 SWITCH-OFF DELAY TIME .................................................................................................................................................. 13
4.2 OPERATION WITH AND WITHOUT TEST PULSES ............................................................................................................ 13
5.1 GENERAL TECHNICAL DATA FOR EP-19XX ..................................................................................................................... 15
5.2 DATA WIDTH OF EP-19XX MODULES ............................................................................................................................. 16
5.3 DIGITAL INPUT MODULE EP-1901 .................................................................................................................................. 17
5.3.1 LEDs ............................................................................................................................................................................ 18
5.3.2 Connection Diagrams ......................................................................................................................................... 19
5.3.3 Specifications EP-1901 ...................................................................................................................................... 20
5.4 DIGITAL INPUT MODULE EP-1902 .................................................................................................................................. 25
5.4.1 LEDs ............................................................................................................................................................................ 26
5.4.2 Connection Diagrams ......................................................................................................................................... 27
5.4.3 Specifications EP-1902 ...................................................................................................................................... 27
5.5 DIGITAL INPUT MODULE EP-1922 .................................................................................................................................. 32
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