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

Service and maintenance

11.1

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.
Danger to life due to 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 properly.
• 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, (GH6), 04/2014, 6SL3097-4AL00-0BP4
WARNING
DANGER
WARNING
WARNING
do so.
heavy and take the necessary precautionary measures.
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