SEW EURODRIVE
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Regenerative power supply and motor inverter up to 315 kW
Regenerative power supply MOVIDRIVE MDR61B
Features | – Energy-efficient and optimized overall concept: MOVIDRIVE B product series extended by regenerative power supply units and corresponding motor inverters in the power range from 160 to 315 kW – Particular interesting for applications with potential energy, such as in hoists, cranes and gantries, or in trolleys with high kinetic energy produced through electrical braking | |
Functions | – Used as central regenerative power supply for connected standard inverters or motor inverters – Energy is fed back into the grid when the application is operating as a generator, e.g. during electrical braking – Braking energy is no longer converted into heat but is fed back into the grid for further use | |
Advantages | – Significant reduction of the overall energy consumption / of CO emissions / of energy costs 2 – No braking resistors are required - No investment costs for braking resistors - No installation effort for external braking resistors - No heating up of the environment through braking resistors – Sinusoidal line current = controlled energy recovery – With coated printed-circuit boards as standard for demanding ambient conditions – Simple installation and wiring: integrated PWM filter / integrated choke / integrated and automatic DC link precharge / in- tegrated line contactor – Modular power section, which means not the entire unit needs to be replaced in the event of service – EMC limit value class C3 (EN 61800-3) with the standard unit - On supply system end: without any measures i no external line filter necessary - On motor end: with shielded motor cables and output choke | |
Type designation | MDR61B1600-503-00/L | MDR61B2500-503-00/L |
Connection voltage | 3× AC 380 V – 500 V | |
Nominal power kW | 160 | 250 |
Line current/nominal motor power IN A | 250 | 400 |
Maximum continuous power | 125% I N | |
Overload capacity | 150% I for 60 s N | |
External accessories for control cabinet installation | – Mounting base – Air duct – Connection kit – Touch guard (IP20 kit) – DC link coupling | |
Motor inverter MOVIDRIVE MDX62B
Features | – Energy-efficient and optimized overall concept: MOVIDRIVE B product series extended by regenerative power supply units and corresponding motor inverters in the power range from 160 to 315 kW – Particular interesting for applications with potential energy, such as in hoists, cranes and gantries, or in trolleys with high kinetic energy produced through electrical braking | ||
Functions | – MOVIDRIVE B standard inverter without input stage for connection to the MOVIDRIVE B MDR61B regenerative power supply | ||
Advantages | – Cost-optimized MOVIDRIVE B standard inverter without input subassemblies – Simple installation – DC link connection via conductor rail – All MOVIDRIVE B option cards can be used | ||
Type designation | MDX62B1600-503-4-0T/L | MDX62B2000-503-4-0T/L | MDX62B2500-503-2-0T/L |
Connection voltage | Connection to regenerative power supply MDR61B | ||
Nominal power kW | 160 | 200 | 250 |
Line current/nominal motor power IN A | 300 | 380 | 470 |
Maximum continuous power | 125% I N | ||
Overload capacity | 150% I for 60 s N | ||
Internal options | Utilization of all MOVIDRIVE B option cards for connection to fieldbus systems and evaluation of motor encoders or distance encoders (see MOVIDRIVE B options) | ||
External accessories for control cabinet installation | – Mounting base – Air duct – Connection kit – Touch guard (IP20 kit) – DC link adapter – DC link coupling | ||
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6.1 Control cabinet installation
: Energy efficiency in the control cabinet
The perfect drive solution for applications from simple speed control to dynamic positioning | Process adaptation | Energy saving function | DC link coupling | Regenerative power supply | Thermally controlled fans |
MOVITRAC LTE-B – Compact range of functions for simple applications | ✔ | ✔ | ✔ | ||
MOVITRAC LTP-B – Adjusted range of functions for simple applications | ✔ | ✔ | ✔ |
| ✔ |
MOVITRAC B – Compact design with complete range of functions – Cost-efficient choice for standard tasks | ✔ | ✔ | ✔ | ✔ | ✔ |
MOVIDRIVE B – High basic functionality with wide range of options – Cost-efficient choice for complex systems | ✔ | ✔ | ✔ | ✔ | ✔ |
Process adaptation
– Almost every process can be adapted to the actual demand thanks to infinitely variable speed and torque control, which makes the process more energy-efficient. Depending on the application, this saves up to 70% of energy.
– More energy-saving potential can be tapped in applications with periodic acceleration and deceleration through energy-efficient motion sequences. Maximum acceleration, speed and braking deceleration are not always necessary.
Energy-saving function
– The energy-saving function of MOVITRAC LTE-B, LTP-B and MOVITRAC B as well as MOVIDRVE B offers advantages when the application has to be operated in the part-load range and dynamic properties are not a main requirement when load changes occur.
– The dynamic adjustment of the magnetization current enables the motor to be operated with optimum efficiency in every operating point. The energy consumption is reduced by up to 30% depending on the application.
– The energy-saving function ensures optimum efficiency of the drive especially in conjunction with an energy-efficient motor.
DC link coupling
– By connecting the DC links of several inverters, regenerative energy of one drive can be used directly as motor energy in another drive.
– This measure can reduce energy consumption from the supply system if the drive sequences are segmented and suitable travel profiles have been selected.
– MOVI-PLC: In storage and retrieval systems, the decentralized controller allows for controlling the travel profile in an intelligent manner and in this 06
way achieves optimum energy coupling.
Regenerative power supply
– A regenerative power supply unit feeds back the regenerative energy of a drive into the supply system.
– The released braking energy is not dissipated via braking resistors but fed back into the supply system, which saves energy.
– This is especially effective in hoists as well as storage and retrieval units.
Thermally controlled fans
– The fans are switched on only when actual waste heat is generated. Not only does this lower energy consumption, it also increases the service life of the fan.
