Safety Instructions For Braking Modules Chassis Format - Siemens SINAMICS S120 Equipment Manual

DC link components
6.2 Chassis
6.2.1.2

Safety instructions for Braking Modules chassis format

Electric shock due to the residual charge of the DC link capacitors
Because of the DC link capacitors, a hazardous voltage is present for up to five minutes
after the power supply has been switched off. Contact with live parts can result in death or
serious injury.
• Only carry out work on these components after this time has elapsed.
• Measure the voltage before starting work on the DCP and DCN DC-link terminals.
Fire and device damage as a result of ground fault/short-circuit
The cables to the braking resistor must be routed so that a ground fault or short circuit can
be ruled out. A ground fault can result in fire with associated smoke.
• Comply with local installation regulations, which allow this fault to be ruled out.
• Protect the cables from mechanical damage.
• In addition, apply one of the following measures:
NOTICE
Damage to braking resistors that are not permissible
An impermissible braking resistor may become damaged.
• Only use braking resistors that SIEMENS has authorized for SINAMICS.
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WARNING
WARNING
– Use cables with double insulation.
– Observe adequate clearances, e.g. through the use of spacers.
– Route the cables in separate cable ducts or pipes.
Manual, 06/2019, 6SL3097-5AL00-0BP1
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