SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
245
Safety instructions for service and maintenance
Danger to life if the fundamental safety instructions and residual risks are not observed
The non-observance of the fundamental safety instructions and residual risks stated in
Chapter 1 can result in accidents with severe injuries or death.
• Observe the fundamental safety instructions.
• Consider the residual risks for the risk evaluation.
Danger to life due to electric shock caused by residual charge of the DC-link capacitors
Due to the DC-link capacitors, a hazardous voltage is present in the DC link for up to five
minutes after the power supply has been switched off.
Touching live components results in death or severe 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.
Danger to life due to electric shock from external supply voltage
If the auxiliary 230 VAC supplies are present, then a hazardous voltage is present at the
components even when the main switch is in the open state.
Death or serious injury can result when live parts are touched.
• Disconnect the existing auxiliary supply circuits from the supply.
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