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 #HPVoltsPhaseAmps
Delta VFD007A21A1HP240V1PH5.0A
Delta VFD007A23A1HP220V3PH5.0A
Delta VFD015A21A2HP220V1PH6.5A
Delta VFD015A23A2HP230V3PH6.5A
Delta VFD022A21A1HP230V3PH11A
Delta VFD022A23A3HP230V3PH11A
Delta VFD037A23A5HP230V3PH17A
Delta VFD055A23B7.5HP220V3PH25A
Delta VFD075A23B10HP220V3PH33A
Delta VFD110A23A15HP230V3PH46A
Delta VFD150A23A20HP230V3PH60A
Delta VFD185A23A25HP220V3PH75A
Delta VFD220A23A30HP230V3PH87A
Delta VFD007A43A1HP480V3PH3.0A
Delta VFD015A43B2HP460V3PH4.2A
Delta VFD022A43A3HP460V3PH5.5A
Delta VFD037A43A5HP460V3PH8.2A
Delta VFD055A43B7HP460V3PH13A
Delta VFD075A43B10HP460V3PH18A
Delta VFD110A43A15HP460V3PH24A
Delta VFD150A43A20HP460V3PH32A
Delta VFD185A43A25HP460V3PH38A
Delta VFD220A43A30HP460V3PH45A