Delta REG2000 Series AC Drives

Delta REG2000 Series AC Drives


A traditional drive system used for inertia load work generally performs rapid deceleration, braking and positioning. When its motor is in generator mode it produces large amounts of regenerative energy that must be consumed to maintain a stable DC bus voltage and safe operation. The traditional method to solve the regenerative energy problem is to install a brake resistor. While it is easy to install and is low cost, it takes up a large amount of space and requires installing additional devices to dissipate the heat. This method provides limited efficiency and wastes the regenerative energy.

Delta’s REG2000 series is capable of collecting and converting your system’s regenerative energy into reusable electricity for the ultimate in energy savings. The installation process is as simple as installing a brake resistor, but with only half the size and better efficiency. The REG2000 is your best green energy solution for power regeneration.


  • Lower harmonics and high power factor using sinewave PWM control
  • Compact design with reactor included and easy installation needs only 5 wires of connection
  • Replace traditional brake resistor providing reduced heat generation and more than 95% power regeneration efficiency
  • Improves drive brake torque 125% to 150%
  • MODBUS 485 communication to real-time monitor kWh and cost
  • High flexibility, compatible with other inverters and servo drives
  • Parallel connections* for large power applications
  • More option cards* available upon purchase: MODBUS TCP, CANopen (DS301), PROFIBUS, DeviceNet, EtherNet/IP


Large-inertia load applications:centrifuge equipment, industrial laundries, roving machines and more.
4-quadrant load applications: elevators, cranes, pumpjacks and more.
Quick braking applications: machine tools, bag making machines, auto storage and retrieval systems, press machines and more.
Long-term energy feedback applications: printing machines, escalators and more.

Part Numbers

Frame A
Delta REG075A23A-21230V3PH7.5kW20A
Delta REG110A23A-21230V3PH11kW32A
Delta REG075A43A-21460V3PH7.5kW10.5A
Delta REG110A43A-21460V3PH11kW17A
Delta REG150A43A-21460V3PH15kW20A
Frame B230V3PH11kW32A
Delta REG150A23A-21230V3PH15kW38A
Delta REG185A23A-21230V3PH18.5kW49A
Delta REG220A23A-21230V3PH22kW60A
Delta REG185A43A-21460V3PH18.5kW25A
Delta REG220A43A-21460V3PH22kW32A
Delta REG300A43A-21460V3PH30kW43A
Frame C
Delta REG300A23A-21230V3PH30kW80A
Delta REG370A23A-21230V3PH37kW100A
Delta REG370A43A-21460V3PH37kW49A
Delta REG450A43A-21460V3PH45kW60A
Delta REG550A43A-21460V3PH55kW75A

Click on the links below to see Drawings and Specs:

Delta REG2000 Manual PDF

Delta REG2000 Catalogue PDF


Delta AC Drives, Delta Inverters, Delta VDFs