Technical Specifications
DP/PA Link and Y Link Bus Couplings
B-16 A5E00193841-011
B.2.2 Use of the DP/PA Bus Coupler in a Zone 2 Hazardous Area
Zone 2
Hazardous areas are divided up into zones. The zones are distinguished according to the
probability of the existence of an explosive atmosphere.
Zone Explosion Hazard Example
2 Explosive gas atmosphere
occurs only seldom and for a
short time
Areas around flange joints with flat gaskets in
pipes in enclosed spaces
Safe area No
• Outside zone 2
• Standard distributed I/O applications
Below you will find important information on the installation of the components of the
DP/PA bus coupler in a hazardous area.
Further Information
You will find further information on the DP/PA bus coupler and the various components in
the manual.
Production Location
Siemens AG, Bereich A&D
Werner-von-Siemens-Straße 50
92224 Amberg
Germany
Certification
II 3 G EEx nA II T3 .. T6 to EN 50021 : 1999
Test number: KEMA 01ATEX1238 X
Note
Modules with II 3 G EEx nA II T3 .. T6 certification can only be used in
SIMATIC S7-300/ET 200M automation systems belonging to equipment
category 3.
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