SINAMICS G120
Standard inverters 0.37 kW to 250 kW (0.5 hp to 400 hp)
SINAMICS G120 standard inverters
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Siemens D 11.1 · 2009
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Overview
Examples of SINAMICS G120, frame size FSGX;
with Power Module
Modularity
SINAMICS G120 is a modular inverter system comprising a
variety of functional units. The main units are:
• the Control Unit (CU)
• the Power Module (PM)
The Control Unit
controls and monitors the Power Module and
the connected motor using several different control types that
can be selected. It supports communication with a local or
central control and monitoring devices.
The Power Module
supplies the motor in a power range 0.37 kW
to 250 kW (0.5 hp to 400 hp). The Power Module is controlled by
a microprocessor in the Control Unit. State-of-the-art IGBT tech-
nology with pulse-width modulation is used to achieve the high-
est degree of reliability and flexible motor operation. Compre-
hensive protection functions provide a high degree of protection
for the Power Module and the motor.
Furthermore, a large number of additional components
are avail-
able, such as:
• Intelligent Operator Panel (IOP) for parameterizing, diagno-
sing, controlling and copying drive parameters
• Basic Operator Panel (BOP) for parameterizing, diagnosing,
controlling and copying drive parameters
• Line filters, Classes A and B
• Line reactors
• Braking resistors
• Sine-wave filters
• Output reactors
Safety Integrated
The SINAMICS G120 standard inverters are available in a num-
ber of different versions for safety-related applications. All Power
Modules are already designed for Safety Integrated. A Safety
Integrated Drive can be created by combining a Power Module
with the appropriate Fail-safe Control Unit.
The SINAMICS G120 fail-safe frequency inverter provides four
safety functions, certified in accordance with EN 954-1,
Category 3 and IEC 61508 SIL 2:
• Safe Torque Off (STO) to protect against active movement of
the drive
• Safe Stop 1 (SS1) for continuous monitoring of a safe braking
ramp
• Safely Limited Speed (SLS) for protection against dangerous
movements when a speed limit is exceeded
• Safe Brake Control (SBC) for controlling motor brakes that are
active in the de-energized state, e.g. motor holding brakes
The functions “Safe Stop 1” and “Safely Limited Speed” can
both be implemented without having to use a motor sensor or
encoder; the implementation cost is minimal. Existing systems in
particular can be updated with safety technology without the
need to change the motor or mechanical system.
The safety functions “Safely Limited Speed” and “Safe Stop 1”
are not certified for pull-through loads as in the case of lifting
gear and winders.
Additional information is provided in the part Highlights, section
Safety Integrated.
Efficient Infeed Technology
The innovative Efficient Infeed Technology is used in PM250 and
PM260 Power Modules. This technology allows the energy pro-
duced by motors operating in generator mode connected to
standard inverters to be fed back into the supply system. Addi-
tional cooling and additional space requirement in the control
cabinet can be avoided as components such as braking resis-
tors, brake choppers and line reactors are not required. Further,
wiring and engineering costs are significantly reduced. At the
same time, considerable savings can be achieved in terms of
energy consumption and operating costs.
Additional information is included in the part Highlights, section
Efficient Infeed Technology.
Innovative cooling concept and coated electronic modules
The innovative cooling concept and coated electronic modules
significantly increase the service life and usage time of the de-
vice. These features are based on the following principles:
• The power loss is exclusively dissipated using an external
heat sink
• Electronic modules not located in air duct
• Standardized convection cooling of Control Unit
• All cooling air from the fan is directed through the heat sink
STARTER commissioning tool
The STARTER commissioning tool simplifies the commissioning
and maintenance of SINAMICS G120 inverters. The operator
guidance combined with comprehensive, user-friendly functions
for the relevant drive solution allow you to commission the device
quickly and easily.
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