Siemens SIMATIC TOP connect Manual page 23

System cabling
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Front connector modules
Table 4-2
Wirings rules for front connector module for 20-pin module
Connectable cable cross-sections
... solid cables
... flexible cables with/without wire end
sleeve
Number of cables per connection
Diameter of the cable insulation, max.
Stripped length of the cables
... without insulating collar
... with insulating collar
Wire end sleeves according to DIN 46228
... without insulating collar
... with insulating collar 0.25 to 1.0 mm
... with insulating collar 1.5 mm
Blade width of the screwdriver
Tightening torque for connecting the ca‐
bles
Table 4-3
Wirings rules for front connector module for 40-pin module
Connectable cable cross-sections
... solid cables
... flexible cables with/without wire end
sleeve
Number of cables per connection
Diameter of the cable insulation, max.
Stripped length of the cables
... without insulating collar
... with insulating collar
Wire end sleeves according to DIN 46228
... without insulating collar
... with insulating collar 0.25 to 1.0 mm
... with insulating collar 1.5 mm
Blade width of the screwdriver
Tightening torque for connecting the ca‐
bles
See also
Connecting the connecting cable and supply voltage to the front connector module (Page 25)
System cabling for S7-300
Manual, 09/2018, 70327045899
Spring-loaded terminal system
No
0.25 to 1.5 mm²
1 or a combination of 2 cables up to 1.5 mm² (total) in a common wire end sleeve
3.1 mm
6 mm
-
Form A, 5 to 7 mm length
-
2
-
2
3.5 mm (cylindrical form)
-
Spring-loaded terminal system
No
0.25 to 0.75 mm²
1 or a combination of 2 cables up to 0.75 mm² (total) in a common wire end sleeve
2.0 mm
6 mm
-
Form A, 5 to 7 mm length
-
2
-
2
3.5 mm (cylindrical form)
-
4.2 Wiring rules
Screw-type system
0.4 to 0.7 Nm
Screw-type system
0.4 to 0.7 Nm
Connecting
23

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S7-300

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