Maintenance And Servicing; Chapter Content - Siemens Sinamics S120 Manual

Maintenance and servicing

10.1

Chapter content

This chapter provides information on the following:
● Maintenance and servicing procedures that have to be carried out on a regular basis to
ensure the availability of the components.
● Exchanging device components when the device is serviced
● Forming the DC-link capacitors
Danger to life if the fundamental safety instructions and remaining risks are not carefully
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.
• Adhere to the fundamental safety instructions.
• When assessing the risk, take into account residual risks.
Danger to life through 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 open the device after five minutes have 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 voltages
When the external power supply or the external 230 VAC auxiliary supply is connected,
dangerous voltages are still present in components even when the main circuit breaker is
open.
Contact with live parts can result in death or serious injury.
• Switch off external supply voltages and external 230 V AC auxiliary supply before
Liquid-cooled chassis power units
Manual, (GH7), 11/2016, 6SL3097-4AM00-0BP7
WARNING
DANGER
DANGER
opening the device.
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