product news

product news 2/2016 | Integrated Drive Systems
Simotics synchronous-reluctance motor with Sinamics S120 frequency converter
High-performance and energyefficient
combination
Simotics synchronous-reluctance
motors can now also be operated
with the Sinamics S120 frequency
converters in the new firmware
version 4.8, allowing the entire functionality
and complexity of the
modular Sinamics S120 range of
products to be utilized. The system
can be used wherever the performance
or efficiency of asynchronous
motors is insufficient, but the highest
level of dynamics is not necessary for
permanent-magnet synchronous
motors. That is true for various applications
in general machine building,
for example, winders, extruders, and
servo-pumps. The safety functionality
and high energy efficiency are
two very persuasive features offered
by the system consisting of Sinamics
S120 and Simotics synchronous-
reluctance motors. In the partial-load
range in particular,
synchronous-reluctance
motors have efficiency levels
that correspond to those of
highly efficient permanent-magnet
synchronous
motors. The system costs are also
considerably lower than those of
permanent-magnet synchronous
motors and less than those of
Simotics 1LE1 IE4 asynchronous
motors. Thanks to the high energy
efficiency and the low initial costs, it
usually takes less than 12 months to
achieve full return on investment
when compared to the cost of operating
IE2 drives.
siemens.com/drivesystemreluctance
NEW FEATURES
• Vector control optimized for
synchronous-reluctance motors
• Motor and regenerative operation
optimized in terms of energy efficiency
and dynamics
• Operation with or without an encoder
• Similar dynamics to permanent-magnet
synchronous motors in terms of speed
steps
• Better dynamics than asynchronous
motors in terms of torque steps
• Safety functionality
Water-cooled Sinamics S120 and Simotics FD
Complete system
for open circuits
NEW FEATURES
• More efficient heat dissipation
• One cooling circuit for plant, motor, and converter
• Available process water becomes cooling water of
the drive system
• Increased energy efficiency thanks to power
recovery and less power loss
The new Simotics FD and Sinamics S120 converters offer
an integrated cooling system for open motor and converter
circuits. The system stands out due to its highly efficient
use of power. Due to an optimized control and pulse
pattern for Simotics FD, power loss can be reduced by at
least 10%. The drive system is also available with active
infeed to recover regenerated power and feed it into the
network. Another advantage of the system is its open
circuit. Only one common cooling circuit is needed for the
plant, the motor, and the converter. The water-quality
requirements are low, and the system is highly resistant to
corrosion, ensuring easy maintenance and commissioning.
Because it is easy to implement high degrees of protection
in the converter and the motor, reliability is guaranteed
even in harsh environments.
siemens.com/ids
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