Siemens SIMATIC ET 200SP HA System Manual page 4

Table of contents
4.6.3 Voltage relationships in an Ex module group ...................................................................... 44
4.6.4 Electrical parameters for the safety concept ....................................................................... 45
4.6.5 Planning intrinsically safe circuits ....................................................................................... 46
4.6.6 Planning the grounding of the power supply ...................................................................... 46
4.6.7 Planning potential groups and Ex power modules ............................................................... 47
4.6.8 Shielding and Measures to Counteract Interference Voltage................................................ 48
4.6.8.1 Shielding ........................................................................................................................... 48
4.6.8.2 Equipment Shielding.......................................................................................................... 48
4.6.8.3 Line Shielding .................................................................................................................... 48
5 Installation........................................................................................................................................... 51
5.1 Mounting the Ex module group.......................................................................................... 51
5.1.1 Safety measures in hazardous areas ................................................................................... 51
5.1.2 Mounting an Ex module group (overview).......................................................................... 51
5.2 Mounting the Ex module group.......................................................................................... 53
5.2.1 Mounting the Ex BaseUnit for Ex I/O module....................................................................... 53
5.2.2 Mounting the Ex power module ......................................................................................... 54
5.2.3 Mounting the Ex BaseUnit for Ex I/O module....................................................................... 55
5.2.4 Plugging in an Ex I/O module or BU cover ........................................................................... 57
5.2.5 Installing the server module............................................................................................... 58
5.3 Identification of components of the Ex module group ......................................................... 60
5.3.1 Factory markings ............................................................................................................... 60
5.3.2 Applying labeling strips ...................................................................................................... 60
5.3.3 Applying reference identification labels .............................................................................. 61
6 Wiring .................................................................................................................................................. 63
6.1 Communication link between basic assembly and Ex module group.................................... 63
6.2 Connecting signal and supply cables .................................................................................. 64
6.2.1 Wiring the terminal block for Ex I/O module........................................................................ 64
6.2.2 Connecting cable shields.................................................................................................... 65
6.2.3 Connecting the supply voltage to the Ex power module...................................................... 67
7 Removal ............................................................................................................................................... 71
7.1 Removing an Ex module group (overview).......................................................................... 71
7.2 Removing the Ex module group.......................................................................................... 72
7.2.1 Removing a server module................................................................................................. 72
7.2.2 Pull Ex I/O module.............................................................................................................. 73
7.2.3 Removing an Ex power module .......................................................................................... 73
7.2.4 Loosening signal cables ..................................................................................................... 75
7.2.5 Removing the Ex BaseUnit for Ex I/O module ...................................................................... 75
7.2.6 Removing the Ex BaseUnit for Ex power module ................................................................. 76
8 Parameters for the Ex power module .................................................................................................. 79
8.1 Parameters of the Ex power module Ex-PM E ...................................................................... 79
8.2 Module/channel parameters............................................................................................... 80
8.3 Explanation of parameters ................................................................................................. 81
9 Service and maintenance .................................................................................................................... 83
9.1 Actions during operation - Overview .................................................................................. 83
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Modules for devices in a hazardous area
System Manual, 04/2021, A5E50165138-AA