SINAMICS G120
Inverter chassis units 0.37 kW to 132 kW (0.5 hp to 200 hp)
PM260 Power Modules
3/51
Siemens D 11.1 · 2008
3
■
Overview
Example of PM260 FSD Power Module
The PM260 Power Module features an absolutely unique tech-
nology which we have called “Efficient Infeed Technology”. The
regenerative feedback capability of the PM260 Power Module in
generating mode (electronic braking) means that energy is re-
turned so the supply system and not destroyed in a braking re-
sistor. This saves space in the control cabinet. The time-consum-
ing dimensioning of the braking resistor as well as the wiring are
eliminated. Generated heat is also reduced in the control cabi-
net.
The innovative circuit design used in Efficient Infeed Technology
reduces supply harmonics. There is no need to use an optional
line reactor at the supply infeed. This saves space and costs for
engineering and procurement.
The PM260 Power Modules are also characterized by a higher
rated pulse frequency combined with outstanding efficiency and
an integral sine-wave filter. The integral sine-wave filter ensures
that the inverter output current is sinusoidal and supports cable
lengths of up to 200 m shielded and 300 m unshielded. An out-
put reactor is therefore not required. Furthermore, lower bearing
currents and voltage stress are generated, which reduces stress
on the motor.
The incorporation of SiC free-wheeling diodes – an absolutely
unique innovation – makes the PM260 Power Module extremely
compact. It is also highly resistant to thermal loading and runs
very quietly thanks to its high pulse frequencies.
Standard motors can be used in conjunction with the PM260
Power Module. An increased dielectric strength of the winding
system is not required.
The PM260 Power Module is suitable for safety-oriented applica-
tions. In conjunction with a Fail-safe Control Unit, the drive can
be turned into a Safety Integrated Drive (see Control Units).
The PM260 Power Modules with integrated class A line filter are
suitable for connection to TN supply systems. Power Modules
without integrated line filter can be connected to grounded (TN,
TT) and non-grounded (IT) supply systems
Overview of how customers benefit from Efficient Infeed
Technology
For more detailed information, please refer to section Efficient
Infeed Technology in chapter Innovations.
Overview of how customers benefit from SiC free-wheeling
diodes
7
Low switching losses at high fundamental frequency
7 High speeds possible
7 Quiet in operation thanks to pulse frequency = 16 kHz
7 High thermal load capacity (small heatsinks)
7 Very compact units
7 Increased ruggedness
7 High efficiency
7 Low forward losses
7 Power unit with regenerative feedback capability
7 Integrated sine-wave filter, long unshielded cables can be
used
7 Suitable for use on motors without special insulation
7 Very low bearing currents, no bearing insulation required
Standard
Technology
Efficient Infeed
Technology
G_D011_EN_00182
Line reactor
Braking resistor
Configuration
overhead
Generated
harmonics
Heat generated
when braking
Required
Required
Standard
Standard
Yes
Not required
Not required
Low
Minimal
No
Power infeed
Power consumption
Energy efficiency
Reactive power
compensation
Installation outlay
Standard
Standard
Standard
No
Standard
Approx. 22%
less
Approx. 22%
less
Good
Yes
Low
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales