SEW EURODRIVE
218
Inverter technology
MOV±DR±VE
®
MDR
Can be used with product series
–
MOVIDRIVE
®
B: 0.55 – 315 kW
–
MOVITRAC
®
MC07B: 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 lif-
ting/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 MOVIDRIVE
®
B 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 recti²er on the drive axis
–
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, drive inverters are selected based on the motor load -> cost-optimized overall
system
–
Example:
- Power rating of drive inverters:
30 kW
- Power rating of regenerative power supply unit: 15 kW
Advantages
–
Reduced overall energy consumption
–
Reduced CO
2
emissions
–
Reduced energy costs
–
Cost-ef±cient 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 control cabinet space and expenditure for ventilation
Energy Recycling
MOVIDRIVE
®
MDR regenerative power supply units
6.1 Control cabinet installation