Siemens SM 331 Guia De Inicio Rapido página 7

English
supplies, 5 VDC bus voltage) must be connected with each other electrically in such a way that, even
if there are differences in potential, no voltage addition occurs at the different voltage sources and the
error voltage Um is not exceeded.
Technical Data
Module-specific data
Type of protection
Test number
Voltages, currents, potentials
Isolation
• between the channels and the backplane bus
• between the channels
Permissible potential difference
• between the different circuits [Ex]
Insulation tested with
• Channels against backplane bus
Current consumption
• from the backplane bus
Power dissipation of the module
A5E00348726-03
II 3 (2) G Ex nA [ib] IIC T4 to EN 60079-0, EN 60079-11,
EN 60079-15
KEMA 01ATEX1061 X
Yes
No
DC 60 V / AC 30 V
AC 1500 V
max. 120 mA
typically 0.6 W
English