WEG - CFW701 HVAC Variable Speed Drive - Thursday, 7 February 2019

The HVAC-R market deserves a dedicated and complete Drive. The CFW701 covers power levels from 1.1 to 132 kW (1.5 to 175 HP. It is used for controlling, viewing and setting all parameters of the CFW701 HVAC. It has specific engineering units for HVAC applications and status indicators that simplify its configuration and operation. It presents two operating modes: monitoring and setting. Optional accessory for external mounting ( up to 30 meters). Save even more energy by using the CFW701 HVAC-R together with the W22 Premium motors, which have the best efficiency in the market. This solution can help you reduce power consumption by approximately 15% thus contributing to sustainable development of the planet.

Special Functions

  • Bypass: Using one of its relay outputs the CFW701 allows the motor to be started cross the line. External circuit is needed for this operation.
  • Fire Mode: This function makes the drive inhibit its internal faults, making the motor run during adverse conditions without stopping the process.
  • Advanced PID - 3 x PID: Three PID control loops - one controls the process by itself and two are additional PID loops to control independent process variable.
  • Sleep / Wake-Up Mode: Prevents the operation of the motor at low speeds programmed for a time period. Wake-up mode determines the time when the drive is restarted.
  • Dry Pump: Prevents the pump from running with no load.
  • PTC: For monitoring PTC sensor.
  • Filter Maintenance Alarm: Warns about the need to replace the filter.
  • Short Cycle Protection: Prevents a compressor / motor from being switched on and off in short periods of time.
  • Broken Belt: Monitors motor torque and prevents the drive from running with lo load in case of a broken belt.

Features & Benefits

  • Supply voltage - rated output current: 220 Vac Single-phase 6 to 10 A (1.5 to 3 cv)
  • 220 Vac Single-phase 6 to 211 A (1.5 to 75 cv)
  • 380 -480 Vac Three-phase 3.6 to 211 A (2 to 175 cv)
  • Conformal Coating
  • According to DIN EN 60068-2-60
  • Built-in specific operating interface
  • Vectrue Technology - Frequency inverter control technology
  • Adjustable or linear V/F scalar
  • VVW - Voltage Vector WEG


  • Airports
  • Stadiums
  • Schools and universities
  • Malls
  • Hotels and restaurant
  • Hospitals
  • Commercial building
  • Residential
  • Pumps and fans
  • Compressors
  • Condensers
  • Evaporators
  • Cooling towers
  • Boilers
  • Chillers