Service And Maintenance; Safety Instructions For Service And Maintenance - Siemens SINAMICS S120 Equipment Manual

Service and maintenance

12.1

Safety instructions for service and maintenance

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.
Electric shock from the auxiliary supplies
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. Contact with live parts can
result in death or serious injury.
• Disconnect the existing auxiliary supply circuits from the supply.
Improper transport or installation of devices and components
Serious injury or even death and substantial material damage can occur if the devices are
not transported or installed professionally and correctly.
• Transport, mount, and remove the devices and components only if you are qualified to
• Take into account that the devices and components are in some cases heavy and top-
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
WARNING
WARNING
WARNING
do so.
heavy and take the necessary precautionary measures.
12
395