Safety Instructions - Siemens SINAMICS S120 Equipment Manual

4.3.2

Safety instructions

Warning
A hazardous voltage will be present in the component for a further 5 minutes after all voltage
supplies have been disconnected. Work cannot be carried out until 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.
CAUTION
The DC link discharge time hazard warning must be affixed to the component in the relevant
local language.
NOTICE
The clearances above, below, and in front of the component, which are specified in the
dimension drawings, must be observed.
CAUTION
In a supply system without regenerative capability (e.g. diesel generator), the regenerative
feedback capability of the Active Line Module must be deactivated in the relevant parameter
(see Description of Functions). The braking energy must then be dissipated via an additional
Braking Module with a braking resistor in the drive line-up.
Danger
Active Line Modules discharge a high leakage current to the protective ground conductor.
Due to the high leakage current associated with Active Line Modules, they or the relevant
control cabinet must be permanently connected to PE.
Other than that the following measures must be taken in accordance with EN 61800-5-1:
Either protective ground conductor cross sections ≥ 10 mm² Cu or installation of a second
protective ground conductor of the same cross section as the first one.
Chassis Power Units Liquid Cooled
SINAMICS S120 Equipment Manual, Edition 12/2007, 6SL3097-2AM00-0BP4
Line Modules
4.3 Active Line Modules
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