Siemens SM 331 Manual De Instrucciones página 6

English
SM 331; AI 2 x 0/4...20 mA HART, 6ES7331-7TB00-0AB0,
as of product state 024
Product Information Leaflet
This product information leaflet contains important information on connecting signals from a
hazardous area to the SM 331; AI 2 x 0/4...20 mA HART.
Further information
Further information on the module, on the use of DM 370 and explosion-protected isolating bar, and on
the isolation of intrinsically safe and non-intrinsically safe cables is given in the reference manual on
S7-300, M7-300, ET 200M Automation Systems I/O Modules with Intrinsically-Safe Signals (part of the
6ES7398-8RA00-8AA0 documentation package).
Manufacturing site
Siemens AG, Gleiwitzer Strasse 555, DE-90475, Nuremberg, Germany
Certification II 3 G (2) GD
Ex nA [ib Gb] IIC T4 Gc
Ex nA [ib IIIC Db] IIC T4 Gc
Ex nA [ib Gb] IIC T4 Gc
Ex nA [ib IIIC Db] IIC T4 Gc
Note
Modules with the certification
SIMATIC
S7-300 / ET 200M automation systems belonging to equipment category 3. Intrinsically safe
electrical equipment for zones 1, 2 und zones 21, 22 can be connected.
Maintenance
The analog module is maintenance-free. In the event of need for repair, the module must be sent to the
place of manufacture. No repairs may be carried out anywhere else.
Installation
• The analog module must be installed outside the hazardous area in a suitable housing that complies
with the IP 20 degree of protection in accordance with EN 60529.
• The analog module must be installed in a suitable housing inside the hazardous area (zone 2) that
has at least IP 54 protection in accordance with EN 60529, although the environmental conditions of
deployment also have to be taken into consideration. There must be a manufacturer's declaration for
zone 2 available for the housing (in accordance with EN 60079-15).
• If a temperature of > 70 °C is reached in the cable or at the cable entry of this housing under
operating conditions, or if a temperature of > 80 °C can be reached at the junction of the conductors
under operating conditions, the temperature-related properties of the cables must correspond to the
temperatures actually measured.
Commissioning
• After the analog module is installed, all relevant separations, connecting leads and connections must
conform to the conditions set out in Section 6.4 of EN 60079-11.
A5E42132375-AA
II 3 G (2) GD Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc can be used in
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