Safety Information - Siemens SINAMICS S120 Equipment Manual

Principle of operation
One or more Motor Modules can be connected to the power supply network via the Basic
Line Module. The Basic Line Module provides the DC link voltage for the Motor Modules.
The Basic Line Module is suitable for direct operation on TN, IT, and TT systems.
The volumetric flow of the coolant is monitored by the software. If the volumetric flow is
continuously lower than the setpoint, an alarm (A5005) is first displayed. If this alarm
remains active continually for the next 5 minutes, a fault message (F30047) is activated
which shuts down the unit.
The fans for the internal electronic circuitry are only switched on when required.
4.2.2

Safety information

Warning
A hazardous voltage will be present in the component for a further 5 minutes after the
system has been shutdown. 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 local
language.
Notice
The clearances above, below, and in front of the component, which are specified in the
dimension drawings, must be observed.
Caution
The busbars and coolant connections which stick out of the module must never be used as
handles or support surfaces when the units are transported.
Chassis Power Units Liquid Cooled
SINAMICS S120 Equipment Manual, Edition 04/2007, 6SL3097-2AM00-0BP2
Line Modules
4.2 Basic Line Modules
4-3