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Dec 17th, 2012
 
Mitsubishi Electric to launch SiC module-equipped drive unit
 
The new SiC power module for CNC drive units offers higher speed and torque for driving machine tool spindles and servo motors.
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MDS-DM2-SPHV3-20080 multi-hybrid drive unit.
MDS-DM2-SPHV3-20080 multi-hybrid drive unit.

Mitsubishi Electric Corporation announced the launch of a drive unit equipped with a silicon carbide (SiC) power module for computerized numerical controllers (CNCs). The MDS-DM2-SPHV3-20080 is a multi-hybrid, multi-axis integrated-drive unit for drive control of spindle and servo motors. Sales will begin on December 3.
 
Power conversion modules are widely used in inverters and converters of household appliances and industrial equipment. SiC power modules are superior to conventional silicon (Si) modules in terms of their significantly reduced switching loss and high tolerance to temperature.
 
To date, Mitsubishi Electric has commercialized SiC power modules for inverters in air conditioners and railcars. The new SiC power module for CNC drive units offers higher speed and torque for driving machine tool spindles and servo motors, which is expected to improve manufacturing productivity in factories.

Main Features
SiC power module for higher speed and torque

 - Power module uses diodes made with SiC
 - High-speed switching operation increases spindle motor speed up to twice that of its previous model (MDS-DM Series) under specific conditions.
 - Reduced power loss in drive unit results in 15% higher torque for spindle motors than MDS-DM Series under specific conditions.
 
Power shut-off and other functions enable downsizing and reduced wiring
 - The Safe Torque Off function for shutting off the power supply to motors, which reduces the number of magnetic reactors required, is available as a standard feature.
 - An interface for linear scale enables direct detection and feedback of machine positions, requiring no external interface unit.

Mitsubishi Electric's new CNC drive unit will be showcased at the 26th Japan International Machine Tool Fair (JIMTOF 2012), which will be held at Tokyo Big Sight in Japan from November 1-6.


 
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