Siemens SIMATIC S7-300 Información Del Producto página 15

Special conditions apply to SM 326; DI 8 x NAMUR in hazardous areas:
• During installation the connection box shall be used, or by using a separation wall a minimum distance of 50 mm shall be
guaranteed between the intrinsically safe and non-intrinsically safe circuits, or the connection parts shall be additionally
insulated (e.g. by heat-shrinkable tubing).
When installed in an area requiring EPL Ge, the following additionally apply:
• The equipment shall only be used in an area of not more than pollution degree 2, as defined in GB/T 16935.1.
• The equipment shall be installed in a suitable enclosure that provides a degree of protection not less than IP54 in
accordance with GB/T 3836.1 and GB/T 4208. The ambient conditions must be taken into consideration for use.
• Provisions shall be made to prevent the nominal voltage from being exceeded by transient disturbances of more than
119 V.
TÜV certificate and standards
The fail-safe signal modules are certified in compliance with standards and guidelines pertaining to functional safety, which
can be found in the relevant safety certificate report (TÜV certificate) and the respective Appendix. You can find the current
German Technical Inspectorate (TÜV) documents on the Internet
(http://support.automation.siemens.com/WW/view/en/49368678/134200).
Module test certificates and declarations of conformity
The module test certificate and declaration of conformity of the SM 326; DI 8 x NAMUR for the connection of signals from the
potentially explosive atmosphere (hazardous areas) can be found on the Internet
(https://support.industry.siemens.com/cs/ww/en/ps/14151/cert).
Product information on fail-safe signal modules
A5E50592408-AA, 11/2022
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