Siemens SM 331 Manual De Instrucciones página 8

English
All voltage sources, e.g. internal 24 V DC load voltage supplies, external 24 V DC load voltage
supplies or 5 V DC bus voltage, must be electrically connected to each other in such a way that even if
there are potential differences there will be no voltage addition at the individual voltage sources,
causing the fault voltage Um to be exceeded.
Technical Data
Module-specific data
Type of protection
Test number
Voltages, currents, potentials
Nominal load voltage of electronics L+
Electrical isolation
• between channels and backplane bus
• between channels and nominal load voltage L+
• between channels
Permissible potential difference
• between different circuits [Ex]
Insulation tested with
• channels to backplane bus and load voltage L+
• channels between each other
• load voltage L+ to backplane bus
Current input
• from backplane bus
• from load voltage L+ (without load)
Power loss of module
A5E42132375-AA
II 3 G (2) GD
Ex nA [ib Gb] IIC T4 Gc
Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc to EN 60079-0, EN 60079-11, EN 60079-15
Ex nA [ib Gb] IIC T4 Gc
Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc to IEC 60079-0, IEC 60079-11, IEC 60079-15
KEMA 97ATEX3039X
IECEx DEK 17.0029X
24 V DC
yes
yes
yes
60 V DC, 30 V AC
1500 V AC
1500 V AC
500 V DC or 350 V AC
max. 100 mA
max. 180 mA
typically 4.5 W
English