Delta VFD-A/H AC Drives

Delta no longer considers this series to be core product.
Please Call for replacement assistance 800-985-6929

Delta VFD-A AC Drives


This series is the first generation of AC motor drive with abundant features, including multi-function I/O terminal, V/f control and auto-torque/auto-slip compensation, built-in RS-485 serial interface (MODBUS) and digital keypad that can be connected to VFD with extended wire. Now it has been updated to B and M series.


  • Output frequency: 0.1~400Hz
  • 1-10HP: built-in brake chopper, DC braking function
  • Analog frequency setting: 0-10VDC, 4-20mA.
  • Coast to stop or ramp to stop can be set.
  • Carrier frequency can be adjusted from 3kHz to 15kHz,
  • 8-step preset speed control, JOG operation
  • 2 sets of accel./decel. time selections and accel./decel. S-curve settings
  • Built-in RS-485 serial interface (Max. baud rate: 4800)
  • Digital keypad can be connected to VFD with the extended wire less than 5m.

Air conditioner for large buildings, woodcarving machine, wastewater treatment system, washing machine, vertical stamping machines, compressor, circular loom, flat knitting machine, pasta machine, etc.

VFD-A Series Part Numbers

Item # HP Volts Phase Amps
Delta VFD007A21A 1HP 240V 1PH 5.0A
Delta VFD007A23A 1HP 220V 3PH 5.0A
Delta VFD015A21A 2HP 220V 1PH 6.5A
Delta VFD015A23A 2HP 230V 3PH 6.5A
Delta VFD022A21A 1HP 230V 3PH 11A
Delta VFD022A23A 3HP 230V 3PH 11A
Delta VFD037A23A 5HP 230V 3PH 17A
Delta VFD055A23B 7.5HP 220V 3PH 25A
Delta VFD075A23B 10HP 220V 3PH 33A
Delta VFD110A23A 15HP 230V 3PH 46A
Delta VFD150A23A 20HP 230V 3PH 60A
Delta VFD185A23A 25HP 220V 3PH 75A
Delta VFD220A23A 30HP 230V 3PH 87A
Delta VFD007A43A 1HP 480V 3PH 3.0A
Delta VFD015A43B 2HP 460V 3PH 4.2A
Delta VFD022A43A 3HP 460V 3PH 5.5A
Delta VFD037A43A 5HP 460V 3PH 8.2A
Delta VFD055A43B 7HP 460V 3PH 13A
Delta VFD075A43B 10HP 460V 3PH 18A
Delta VFD110A43A 15HP 460V 3PH 24A
Delta VFD150A43A 20HP 460V 3PH 32A
Delta VFD185A43A 25HP 460V 3PH 38A
Delta VFD220A43A 30HP 460V 3PH 45A