Siemens Simatic CFU User Manual

11 Compact Field Unit in the housing for use in a hazardous area ..............................................................129
11.1 CFU in hazardous areas ......................................................................................................129
11.2 Grounding for configuration with SIMATIC CFU with aluminum housing.............................130
11.3 Configuration with SIMATIC CFU with aluminum housing ..................................................132
11.3.1 Introduction ..........................................................................................................................132
11.3.1.1 Installation instructions.........................................................................................................133
11.3.1.2 Design types of protection on the CFU ...............................................................................134
11.3.1.3 Explosion protection.............................................................................................................134
11.3.2 Installation ............................................................................................................................135
11.3.2.1 Configuration with CFU ........................................................................................................135
11.3.2.2 Installation ............................................................................................................................135
11.3.2.3 Installation rules ...................................................................................................................135
11.3.2.4 Installing SIMATIC CFU with aluminum housing on the mounting surface..........................137
11.3.2.5 Installing the CFU.................................................................................................................138
11.3.2.6 Connecting the cables..........................................................................................................139
11.3.2.7 CFU PA in aluminum housing: Connecting the field bus .....................................................141
11.3.2.8 CFU PA in aluminum housing: Connecting the cable shields of the PROFIBUS PA cables....142
11.3.2.9 Grounding SIMATIC CFU with aluminum housing...............................................................143
11.3.3 Care and maintenance.........................................................................................................143
11.3.3.1 Information on care and maintenance..................................................................................143
11.3.3.2 Permitted activities in hazardous areas ...............................................................................144
11.3.3.3 Maintenance during operation..............................................................................................144
11.3.3.4 Cleaning ...............................................................................................................................145
11.3.3.5 Replace pressure compensation element............................................................................145
12 Technical specifications............................................................................................................................147
12.1 General technical specifications...........................................................................................147
12.1.1 Standards and approvals for SIMATIC Compact Field Unit PA (CFU PA) ..........................147
12.1.1.1 CE conformity ......................................................................................................................147
12.1.1.2 ATEX Approval.....................................................................................................................149
12.1.1.3 IECEx approval ....................................................................................................................150
12.1.1.4 INMETRO approval..............................................................................................................150
12.1.1.5 UL / CSA approval ...............................................................................................................150
12.1.1.6 FM Approval.........................................................................................................................151
12.1.1.7 Tick mark for Australia and New Zealand ............................................................................152
12.1.1.8 Standards for communication connections ..........................................................................152
12.1.1.9 Safety regulations and special requirements ......................................................................152
12.1.2 Standards and approvals for SIMATIC Compact Field Unit DIQ (CFU DIQ) .......................152
12.1.2.1 Safety instructions for using the SIMATIC Compact Field Unit DIQ (CFU DIQ) ..................153
12.1.2.2 ATEX approval for SIMATIC CFU DIQ (6ES7655-5PX31-1AX0) with and without
aluminum housing (6ES7655-5PX31-1XX0)........................................................................155
12.1.2.3 IECEx approval for SIMATIC CFU DIQ (6ES7655-5PX31-1AX0) with and without
aluminum housing (6ES7655-5PX31-1XX0)........................................................................156
12.1.2.4 UL approval for SIMATIC CFU DIQ without aluminum housing (6ES7655-5PX31-1XX0) ....157
12.1.2.5 FM approval for SIMATIC CFU DIQ without aluminum housing (6ES7655-5PX31-1XX0) ....157
12.1.2.6 Standards for communication connections ..........................................................................157
12.1.2.7 Safety regulations and special requirements ......................................................................157
12.1.3 Electromagnetic Compatibility..............................................................................................158
12.1.4 Shipping and storage conditions ..........................................................................................160
12.1.5 Mechanical and climatic ambient conditions for operation...................................................160
Table of contents
SIMATIC CFU
6 Commissioning Manual, 08/2019, A5E39252870-AD

Siemens Simatic CFU Specifications

General

Brand	Siemens
Model	Simatic CFU
Category	I/O Systems
Language	English