SEW EURODRIVE
296
Servo drive technology
7.9 Inverter technology
MOVIDRIVE
®
MDR
Can be used with product series
–
MOVIDRIVE
®
B: 0.55 – 315 kW
–
MOVITRAC
®
B: 5.5 – 75 kW
Features
Energy balance
Braking energy from the load cycle is no longer converted into heat energy but is fed back into the
grid.
Energy recovery is particularly interesting for applications with a high energy potential of
lowering/
deceleration movements of the load cycle, such as gantry cranes, storage/retrieval systems or
lifting/lowering applications.
Regenerative power supply:
For central energy supply and recovery
–
Used for central energy supply and recovery to supply the connected drive inverters with energy
–
Several inverters are connected in a DC link system
–
Energy is exchanged between the drive axes and excess braking energy is fed back into the
power supply system
Regenerative power supply:
Function as a brake module
(only MDR60A0150)
–
Using the regenerative power supply unit as brake module means the connected inverters are
not supplied with energy but only the braking energy is fed back into the power supply system
–
DC link supplied via the integrated input rectifier of the inverter
–
Braking energy released during the application is fed back into the power supply system
–
The regenerative power supply unit is selected based on the braking energy released during the
application, inverters are selected based on the motor load
i
cost-optimized overall system
–
Example of a product combination:
MOVIDRIVE
®
B application inverter 30 kW with
MOVIDRIVE
®
MDR regenerative power supply unit: 15 kW
Advantages
–
Reduced overall energy consumption
–
Reduced CO
2
emissions
–
Reduced energy costs
–
Cost-efficient installation
–
No investment in braking resistors
–
No braking resistors need to be installed outside the control cabinet
–
No heating of the environment or of the control cabinet through braking resistors
–
Saves expenditure for control cabinet ventilation
–
Saves control cabinet space
Energy Recycling
MOVIDRIVE
®
MDR regenerative power supply units 15 kW – 160 kW