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)
Power Modules
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Overview
PM250 Power Modules – 7.5 kW to 90 kW (10 hp to 125 hp), IP20 degree of protection
PM250 Power Modules, frame sizes FSC to FSF
PM250 Power Modules are suitable for a large number of appli-
cations in general mechanical engineering. Any braking energy
is directly fed back into the line supply (four-quadrant applica-
tions – a braking chopper is not required).
The PM250 Power Module features an absolutely unique tech-
nology – Efficient Infeed Technology. This feature provides the
ability to feed energy back into the supply system in the gener-
ator mode (electronic braking) so that the energy is not wasted
in a braking resistor. This saves space in the control cabinet. The
time-consuming process of dimensioning the braking resistor
and the expense of the extra wiring are eliminated. Furthermore,
heat losses in the control cabinet are reduced.
Additional information is provided in chapter Highlights,
section Efficient Infeed Technology.
Further, the innovative circuit design reduces the line harmonics.
There is no need to use an optional line reactor at the supply
infeed. This saves space and costs for engineering and procure-
ment.
The permissible cable lengths between inverter and motor are
limited (for max. permissible cable lengths,
see Integration
).
Longer cables can be used if output reactors are connected
(see section Load-side power components)
.
Frame sizes FSD to FSF of the PM250 Power Modules are avail-
able both with as well as without integrated line filter class A.
For frame size FSC of the PM250 Power Module with an inte-
grated line filter class A, an additional base filter of class B is
available for achieving class B
(see section Line-side power
components)
.
The PM250 Power Module is also designed for safety-oriented
applications. In conjunction with a fail-safe Control Unit, the drive
can be transformed into a Safety Integrated Drive
(see section
Control Units)
.
The PM250 Power Modules with integrated line filter class A are
suitable for connection to TN supply systems. Power Modules
without integrated line filter can be connected to grounded
TN/TT systems and non-grounded IT systems.
Note:
Shield plates and shield connection kits are available. These can
be used in the wiring installation for the Control Units and Power
Modules to ensure that it complies with EMC guidelines.
For further information, see Shield connection kits and Shield
plates for Control Units and Power Modules in section
Supplementary system components.
© Siemens AG 2016