Dynamic Energy Unit0 pages

Dynamic Energy
Unit
Improves overall system efficiency
and reduces cabinet power losses

The Dynamic Energy Unit (DEU) is an accessory for Servo Drives that provides active
storage and supply for DC link energy management. The DEU is comprised of three
modules, an energy storage module, energy supply module and expansion modules.
The combination of these three modules gives the machine builder maximum
flexibility in management of DC bus energy. The Energy Storage module (DEU-ST)
allows the energy from decelerating axes to be stored for use on the next machine
cycle instead of being dissipated in a braking resistor. The result is improvement in
overall system efficiency and reduction in cabinet power losses. In situations where
backup or UPS function is needed due to the loss of main power, the Supply Unit
Module (DEU-SU) allows the axis to continue to operate from stored energy, ensuring
a safe shutdown or emergency operation of the axis under control.
Both the Storage and Supply Modules are available with a simple plug-and-play
installation with minimal setup and installation. These units can be connected
directly to the DC link (upto 850 V) and do not increase line harmonics as would be
the case with a simple capacitor based approach. Expansion modules (DEU-EM) in
sizes 2 and 4 are available for both the storage and supply units to provide increased
energy handling capability.

Advantages
Storage Unit (DEU-ST)
•t Increased system efficiency
•t Reduce/eliminate braking resistor
•t Simple installation
•t Reduced power dissipation
•t No impact on power quality
(line harmonics)
•t Expansion modules for higher
energy axes (DEU-EM)
Supply Unit (DEU-SU)
•t Simple installation
•t Short term UPS function
•t Digital output for monitoring
•t Expansion modules for higher
energy axes/extended backup time
(DEU-EM)

Applications
•t Power generation
•t Blow moulding
•t Plastics
•t Material packaging

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