Delta Electronics VFD Drives VFD-S general purpose series model VFD004S21A

Delta Electronics
VFD004S21A
* Discontinued model! Ask for new version or replacement!
VFD004S21A

Price: reduced!

Delta Electronics general purpose VFD-S series AC Micro drive is famous for its low-noise carrier frequency feature and easy to use keypad. Applications: air conditioner for large buildings; water supply system for large buildings; temperature control of middle/large oven; webbing loom; packing machine; conveyer belt; fan of drying machine, etc. 



  • Output frequency 1.0~400 Hz
  • Adjustable V/f curve
  • Carrier frequency up to 10 kHz
  • Built-in PID feedback control
  • Built-in MODBUS communication, baud rate up to 38400 bps
  • Momentary power failure or fault restart
  • Built-in Sleep / Revival function
  • Support communication module (DN-02, LN-01, PD-01)

Additional links:

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  • Official Supply
  • Official Warranty
  • Brand-new products only
  • Express delivery on request
Price: reduced!

Technical Specification

Manufacturer: Delta Electronics
Series: VFD-S
Model: VFD004S21A
Application: pumps / fans / general purpose
Capacity, kW: 0,4
Current, А: 2.5
Main power supply, V: 230
Phase: 1
Output frequency, Hz: 0-400
Enclosure: IP 20
Overload capacity, % per 1 min.: 150
Acceleration time, sec: 0,1-600
Deceleration time, sec: 0,1-600
EMC filter: +
Braking unit: +
Analog input: 1
Digital input: 6
Analog output: 1
Digital output: 1
Relay output: 1
RS485 (Modbus RTU): +
Starting torque: 150%
PID: PID - regulation
V/f control mode: +
Vector control with feedback: -
Sensorless vector control: -
Operation temperature, °С: -10.....+40
Storage temperature, °С: -20.....+60
Dimensions (W x H x D), mm: 85х148х102
Weight, kg: 1,5
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