Siemens SINAMICS S120 Combi User Manual page 63

CAUTION
Operation on line supplies where energy recovery is not possible
In a line supply system without energy recovery capability (e.g. diesel generator), the
energy recovery capability of the S120 Combi must be deactivated using parameter p3533
(see description of functions). The braking energy must then be dissipated via an additional
Braking Module with braking resistor provided in the drive line-up.
In the interests of operator and fire protection, the line supply conditions in terms of short-
circuit power and loop impedance at the infeed point must be such that they will trip the
installed overcurrent protection devices within the prescribed period if a fault occurs (short
circuit or short circuit to exposed conductive part).
Note
System fault level at the infeed point
In order to limit the line harmonics to an appropriate level for additional loads, the system
fault level at the infeed point must be at least a factor 70 higher than the rated power of the
integrated infeed.
The drive components generate high leakage currents in the protective conductor. The
components may only be operated in control cabinets or in locked, electrical equipment
rooms. They must be connected with the protective conductor. To protect against electric
shock, the protective conductor connection at the control cabinet or system must be
implemented in accordance with one of the following measures:
• Fixed connection and protective conductor connection with ≥ 10 mm
• stationary connection and installation of a second protective conductor with the same
• stationary connection and automatic shutdown of the line supply if the protective
• Connection with a plug connector for industrial applications in accordance with
It is mandatory that the shield for the motor holding brake is connected. MOTION-
CONNECT cables must be used for the integrated motor holding brake, as otherwise the
insulation strength of the cores is not guaranteed. Risk of electric shock.
SINAMICS S120 Combi
Manual, Edition 07/2012, 6SL3097-4AV00-0BP3
DANGER
DANGER
cross-section as the first protective conductor
conductor is interrupted
EN 60309; minimum protective conductor cross-section of ≥ 2.5 mm
multi-core supply cable with appropriate strain relief
DANGER
S120 Combi Power Modules
3.2 Safety information
Cu or ≥ 16 mm
2
Cu as part of a
2
Al
2
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