SIEMENS
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Siemens D 31 · 2015
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Design
SINAMICS G120 standard inverters
0.37 kW to 250 kW (0.5 hp to 400 hp)
SINAMICS G120 standard inverters
Line-side power components
The following line-side power components are available for
SINAMICS G120 standard inverters:
Line filters
With one of the additional line filters, the Power Module reaches
a higher radio interference class.
Line reactors (for PM240 and PM240-2 Power Modules only)
Line reactors smooth the current drawn by the inverter and thus
reduce harmonic components in the line current. Through the re-
duction of the current harmonics, the thermal load on the power
components in the rectifier and in the DC-link capacitors is re-
duced as well as the harmonic effects on the supply. The use of
a line reactor increases the service life of the inverter.
Recommended line-side power components
Furthermore, this is a recommendation for additional line-side
components, such as fuses and circuit breakers (line-side com-
ponents must be dimensioned in accordance with IEC stan-
dards).
Additional information about the listed fuses and circuit breakers
can be found in Catalogs LV 10, IC 10 and IC 10 AO.
DC link components
The following DC link components are available for the
SINAMICS G120 standard inverters:
Braking resistors (for PM240 and PM240-2 Power Modules only)
Excess energy in the DC link is dissipated in the braking resistor.
The braking resistors are designed for use with PM240 and
PM240-2 Power Modules. They are equipped with an integrated
braking chopper (electronic switch). There is an optional plug-in
Braking Module for frame size FSGX.
Braking Modules (only for PM240 Power Modules, frame size
FSGX)
A Braking Module and the matching external braking resistor are
required to bring drives with a PM240 Power Module, frame
size FSGX, to a controlled standstill in the event of a power failure
(e.g. emergency retraction or EMERGENCY STOP Category 1) or
to limit the DC link voltage during a short period of generator
operation. The Braking Module includes the power electronics
and the associated control circuit.
Load-side power components
The following load-side power components are available for the
SINAMICS G120 standard inverters. This means that during
operation with output reactors or sine-wave filters, longer,
shielded motor cables are possible and the motor service life
can be extended:
Output reactors
Output reactors reduce the rate of voltage rise (d
v
/d
t
) and the
height of the current peaks, and enable longer motor cables to
be connected.
Sine-wave filter
Sine-wave filters limit the rate of voltage rise (d
v
/d
t
) and the peak
voltages on the motor winding. Similar to an output reactor, they
enable the connection of longer motor cables.
Spare parts
Spare Parts Kit for Control Units
The Spare Parts Kit contains small parts for all variants of the
following SINAMICS G120 Control Units:
• CU230P-2
• CU240B-2
• CU240E-2
• CU240E-2 F
• CU250S-2
Shield plates for PM230 and PM240-2 Power Modules
PM230 Power Modules, frame sizes FSA to FSC, in degree of
protection IP20, and PM240-2 Power Modules, frame sizes FSA
to FSC (for both standard and push-through variants) are sup-
plied with a shield plate for motor and signal cables. This shield
plate is also available as a spare part.
Terminal cover kit
The kit includes a replacement cover for the terminals. The kit
can be ordered for PM250, PM240 and PM230 Power Modules
in degree of protection IP20 (standard variants) in frame sizes
FSD, FSE and FSF.
Replacement connectors for PM240-2 Power Modules
A set of connectors for the line feeder cable, braking resistor and
motor cable can be ordered corresponding to the frame size of
the PM240-2 Power Module.
Replacement door for PM240 Power Modules, frame size FSGX
A complete replacement door can be ordered for the PM240
Power Module, frame size FSGX.
Fan units for PM230 and PM240-2 Power Modules
The fans of PM230 and PM240-2 Power Modules are designed
for extra long service life. For special requirements, replacement
fans are available that can be exchanged quickly and easily.
Replacement fans for PM240 and PM250 Power Modules
The fans of PM240 and PM250 Power Modules are designed for
extra long service life. Replacement fans can be ordered for
special applications.
© Siemens AG 2014