Technical Specifications For Front Connector Modules; Technical Specifications For Connecting Cables - Siemens SIMATIC TOP connect Manual

6.5

Technical specifications for front connector modules

Note
Total current less than 4 A per byte
The infeed point of the positive potential of an external supply voltage can be connected to the
terminal module. The supply voltage is directed thereby through the connecting cable. Due to
the limited current carrying capacity of the connecting cable, the total current of 4 A/byte must
not be exceeded under any circumstances.
Note
Total current more than 4 A per byte
With additional connecting cables, total currents of more than 4 A are conducted to the module
from an external power supply. These additional connecting cables are connected to special
connection sockets on the front connectors.
Table 6-1
For all front connector modules
Rated operating voltage
Max. permissible operating voltage
Max. permissible continuous current per connec‐
tor pin
Max. permissible total current
Permissible ambient temperature
Test voltage
Clearance and creepage distances
6.6

Technical specifications for connecting cables

Table 6-2
For 6ES7923 - * connecting cables
Type of supply voltage
Operating voltage
Max. permissible continuous current
Per signal line
Permissible total current per group
16-pin
50-pin
External diameter of pre-fabricated round cable
System cabling for S7-300
Manual, 09/2018, 70327045899
Technical specifications of front connector module
Connecting cables
6.6 Technical specifications for connecting cables
24 V DC
60 V DC
1 A
4 A/byte
0 to + 60 °C
0.5 kV, 50 Hz, 60 s
IEC 664 (1980), IEC 664 A (1981), according to
DIN VDE 0110 (01.89), overvoltage class II, de‐
gree of pollution 2
DC
max. 60 V
1 A
4 A / byte
2 A / byte
Technical specifications
63