Siemens SINAMICS S120 Manual page 22

Safety information
1.3 Safety information
Five safety rules
When carrying out any kind of work on electrical devices, the following "five safety rules"
must always be observed in accordance with EN 50110-1 and EN 50110-2:
 Disconnect from power supply.
 Protect against reconnection.
 Make sure that the equipment is de-energized.
 Ground and short-circuit.
 Cover or enclose adjacent components that are still live.
Correct and safe operation
Safe, problem-free operation of SINAMICS S120 Cabinet Modules requires proper
transportation, storage, setup, and installation, as well as careful operation and
maintenance.
The details in the catalogs and proposals also apply to the design of special equipment
versions.
In addition to the danger and warning information provided in the technical customer
documentation, the applicable national, local, and plant-specific regulations and
requirements must be taken into account.
Only protective extra-low voltages (PELV) that comply with EN 60204-1 may be connected
to any connections and terminals that are intended for the voltage range between 0 V and
48 V.
NOTICE
Disconnecting the connections before a voltage test
As part of routine tests, SINAMICS S120 Cabinet Modules undergo a voltage test in
accordance with EN 61800-5-1. Prior to performing the voltage test for electrical equipment
of industrial machines in accordance with EN 60204-1, Section 18.4, all connections of the
Cabinet Modules must be disconnected/removed to prevent the units from being damaged.
Motors must be connected according to the circuit diagrams provided.
Note
When operated in dry operating areas, SINAMICS S120 Cabinet Modules with three-phase
induction motors conform to Low Voltage Directive 2006/95/EC.
SINAMICS S120 Cabinet Modules with three-phase induction motors conform to EMC
Directive 2004/108/EC in the configurations specified in the associated EC Declaration of
Conformity, provided that the configuration guidelines and actions are consistently applied.
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DANGER
WARNING
Cabinet Modules
Manual, 03/2013, A5E03263538A