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The connectable cable cross-sections for S120 components are specified in Chapter "Connection
system" of the SINAMICS S120 Equipment Manual Booksize Power Units
support.industry.siemens.com/cs/ww/en/view/109781351).
Note
Selection of the line supply cable
When selecting the line supply cable, observe the loop resistance to ensure that the relevant
protective elements (line fuse, residual current device, ...) function reliably, and that in the event
of a fault, no hazardous shock currents or touch voltages occur.
If the loop resistance of the line supply at the infeed point is not suitable, so that fuses do not
rupture in the specified time in the case of insulation failure (ground fault, fault to frame), then
you must use additional residual current devices RCD (RCCB or MRCD), Type B to protect
personnel and protect against fire.
8.9.5
Maximum cable lengths
An overview of the maximum permissible lengths of all signal, supply and power cables is
provided in the following table.
Table 8-18
Maximum permissible cable lengths
Type
24 V DC power supply cables
24 V signal cables
DRIVE-CLiQ signal cables MC500
DRIVE-CLiQ signal cables MC800PLUS
DC link, including extensions
Connecting cable between line filter and line reactor
Connecting cable between line reactor and Line Module
1)
For longer lengths, you must connect a suitable circuit to provide overvoltage protection. More information is provided in
Chapter "24 V DC supply" of the SINAMICS S120 Equipment Manual Booksize Power Units.
To comply with EMC limit values, you must use shielded cables (preferably MOTION-CONNECT cables).
2)
The maximum permissible cable lengths for S120 components are specified in Chapter
"Connection system" of the SINAMICS S120 Equipment Manual Booksize Power Units
support.industry.siemens.com/cs/ww/en/view/109781351).
Note
Total cable lengths to comply with the EMC category
The maximum total cable lengths of Smart Line Modules are specified in Chapter "Combination
options of Line Modules with line reactors and line filters" (Page 114).
Booksize power units
Equipment Manual, 01/2022, 6SL3097-6AC30-0BP0
Control cabinet design and EMC booksize
8.9 Connection system
(https://
Maximum length [m]
30
1)
30
1)
100
75
10
10 (shielded/unshielded)
10 (shielded/unshielded)
2)
2)
(https://
135
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