Applications involving high inertia loads, when applied short time deceleration, a large amount of energy returns from the motor to the VSD. To handle this energy, reguilar VSDs have to dissipate it as heat in power resistors. Such resistors are usually large and some installation criteria must be considered due to their heat dissipation. As an alternative to the use of braking resistors, CFW11 features a special braking method in vector control mode known as Optimal Braking®. This innovation delivers a high performance braking torque without requiring a braking resistor. The following graph shows the advantages of using Optimal Braking® compared to other braking methods, thus ensuring an optimized and low cost solution for braking applications.

The CFW11 was developed based on Plug & Play philosophy, identifying automatically the accessories plugged in, as well as easy installation and safe operation with no need for extra configuration.

• Power supply:
  • 200 to 240 V single-phase: output current from 6 to 10 A (2.0 to 3 cv)
  • 200 to 230/240 V three-phase: rated output current from 7.0 to 211 A (2.0 to 150 cv)
  • 380 to 480 V three-phase: rated output current from 3.6 to 720 A (2 to 970 cv)
  • 500 to 600 V three-phase: rated output current from 2.7 to 435 A (2 to 850 cv)
  • 500-690 V three-phase: rated output current from 2.7 to 365 A (3 to 850 cv)
• Built-in inductors on the DC Link
• Space saving in the panel
• Built-in USB port
• Inverter smart cooling system
• Several communication protocols available (Modbus-RTU, Modbus-TCP, Profibus-DP-V1, DeviceNet, CANopen, EtherNet/IP, EtherCAT, PROFINET-IO and BACnet)
• Version with cabinet with degree of protection IP55 (versions with built-in switch-disconnector)
• High precision and reliability in speed and torque control
• Robust hardware