① Protective conductor for the mains supply cable
The prot
ective conductor must be dimensioned in compliance with local installation rules for
equipment with high leakage currents. As a minimum, one of the following conditions must be
satised:
• The protective conductor is routed so that along its complete length it is protected against
mechanical damage.
• The protective conductor has a cross-section ≥10mm²Cu.
• A second protective conductor with the same cross-section is provided.
• The protective conductor of a multi-conductor cable has a cross-section ≥2.5mm² Cu.
② Protective conductor of the converter line supply cable
The prot
ective conductor must be dimensioned in compliance with local installation rules.
• If each converter is individually protected, the protective conductor with the same cross-sec‐
tion must be routed in the same way as the line connection cable to the converter.
③ Protective conductor between PE and control cabinet
The cable cross-section mus
t be dimensioned in compliance with local installation rules.
④ Protective conductor of the motor power cable
The prot
ective conductor has the same cross-section as the line conductor of the motor power
cable.
Application planning
4.6Minimum cross-section of the protective conductors
SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2
Operating Instructions, 11/2023, FW V6.3, A5E51646752B AB 87
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