Cabinet design and EMC for components, Blocksize format
10.2 Safety instructions for control panel manufacturing
SINAMICS S110
228 Manual, 07/2015, 6SL3097-4AC10-0BP5
Safety instructions for control panel manufacturing
Danger to life if the fundamental safety instructions and residual risks are not heeded
Failure to heed the fundamental safety instructions and residual risks in Chapter 1 can
result in accidents causing severe injuries or death.
• Follow the fundamental safety instructions.
• Consider the residual risks on the risk assessment.
Danger to life caused by high leakage currents when the external PE conductor is
interrupted
Drive components conduct high leakage currents through the PE conductor. When the PE
conductor is interrupted, touching live components can result in electric shock, which can
lead to death or serious injuries.
• Ensure that the external PE conductor complies with at least one of the following
conditions:
– It is laid protected against mechanical damage.
1)
– If it consists of a single conductor, it has a cross section of at least 6 mm² Cu.
– As a core of a multi-core cable, it has a cross section of at least 2.5 mm² Cu.
– It has a parallel, second PE conductor with the same cross section.
– It complies with the local regulations for equipment with increased leakage current.
1)
Cables routed in control cabinets or enclosed machine enclosures are considered to
be adequately protected against mechanical damage.
Danger to life as a result of electric shock for incorrectly routed brake cables
When routing brake cables without safe electrical separation, the insulation can fail
resulting in electric shock.
• Connect the holding brake using the MOTION-CONNECT cable intended for the
purpose.
• Only use third-party cables that have brake cores with safe electrical separation or
separately route the brake cores with safe electrical separation.
Fire hazard due to overheating when permissible cable lengths are exceeded
Excessively long power cables can cause overheating of components with resulting fire and
smoke development.
• The cable lengths (e.g. motor cable, DC-link cable) listed in the technical data must not
be exceeded.
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