Safety Information - Siemens SINAMICS S120 Equipment Manual

4.2.1.2

Safety information

Danger
After disconnecting all the supply voltages, a hazardous voltage will be present in all
components for another 5 minutes. Work may not be carried out on the components until
after this time has elapsed.
Before starting work, you should also measure the voltage after the 5 minutes have elapsed!
The voltage can be measured on DC link terminals DCP and DCN.
Danger
The DC link discharge voltage hazard warning in the local language must be attached to all
of the components.
Danger
The connection to the braking resistors must be short-circuit/ground-fault proof.
Warning
If braking resistors are used that have not been released by SIEMENS for SINAMICS, then
the braking resistors could be destroyed.
Equipment Manual AC Drive
Manual, (GH6), 03/2006 Edition, 6SL3097-2AL00-0BP0
DC link components
4.2 Chassis
4-9