SIEMENS
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Siemens D 31 N · March 2016
SINAMICS G120 standard inverters
0.37 kW to 250 kW (0.5 hp to 400 hp)
Load-side power components
> Sine-wave filters
5
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Overview
Sine-wave filter for PM240 Power Modules, frame size FSGX
Sine-wave filters limit the rate of voltage rise (
dv/dt
) and the peak
voltages on the motor winding. Similar to an output reactor, they
enable the connection of longer motor cables.
Bearing currents are also reduced significantly. Using these
filters therefore allows standard motors with standard insulation
and without insulated bearings to be operated on SINAMICS.
As a result, the voltage load on the motor winding is virtually
identical to the load on windings of directly mains-fed motors.
Owing to the very low rates of voltage rise on the motor cable,
the sine-wave filter also has a positive impact in terms of electro-
magnetic compatibility which means that it is not absolutely es-
sential to use shielded cables for short motor cables to achieve
the required standard of EMC.
Since the voltage applied to the motor is not pulsed, the inverter-
related stray losses and additional noise in the motor are also
reduced considerably and the noise level of the motor is similar
to the level produced by directly mains-fed motors.
When using sine-wave filters, the following should be observed:
•
Pulse frequencies of between 4 kHz and 8 kHz are
permissible for rated outputs up to and including 90 kW.
4
kHz is the only permissible pulse frequency for rated outputs
of 110 kW or higher with a PM240 Power Module. Note
additional current derating as compared with rated pulse
frequency of 2 kHz
(see derating data)
•
The output frequency is limited to 150 Hz
•
Operation and commissioning may only be performed with the
motor connected as the sine-wave filter is not no-load proof
•
It must be ensured that the automatic pulse frequency
reduction functions are also deactivated
•
80 % of the line input voltage is available as an output voltage
for PM230 Power Modules
•
A derating of 5 % must be observed when a PM240 Power
Module is selected
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Integration
Sine-wave filters that are optionally available depending on the Power Module used
U = Base component
S
= Lateral mounting
–
= Not possible
Frame size
FSA
FSB
FSC
FSD
FSE
FSF
FSGX
PM230 Power Module degree of protection IP20
Available frame sizes
–
Load-side power components
Sine-wave filter
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–
–
S
S
S
–
PM240-2 Power Module with integrated braking chopper
Available frame sizes
• 200 V versions
1)
1)
1)
–
• 400 V versions
–
• 690 V versions
–
–
–
–
Load-side power components
Sine-wave filter
–
–
–
–
–
–
–
PM240 Power Module without integrated braking chopper
Available frame sizes
–
–
–
–
–
–
Load-side power components
Sine-wave filter
–
–
–
–
–
–
S
PM250 Power Module with line-commutated energy recovery
Available frame sizes
–
–
–
Load-side power components
Sine-wave filter
–
–
U
S
S
S
–
1)
PM240-2 200 V versions, frame sizes FSD to FSF are only available
without integrated line filter.
© Siemens AG 2016