The Delta VFD004EL21A is a compact, micro-type variable frequency drive (VFD) from the Delta VFD-EL series. It is designed for single-phase 230V AC input and is used to control the speed of a standard 3-phase AC induction motor.
Product specifications
According to product listings from RS Components, Inverter Drive Supermarket, and DigiKey, here are the specifications for the Delta VFD004EL21A:
| Attribute | Value |
|---|---|
| Brand | Delta Electronics |
| Series | VFD-EL Series |
| Power Rating | 0.4 kW (0.5 HP) |
| Input | Single-phase, 200–240V AC, 50/60 Hz |
| Output | Three-phase, proportional to input voltage |
| Output Frequency | 0.1–600 Hz (adjustable) |
| Rated Output Current | 2.5A (according to DigiKey) or 6.5A (according to RS Components) |
| Filter | Built-in EMI filter |
| Communication | Built-in RS-485 with Modbus protocol |
| Keypad | Fixed, on-board keypad with potentiometer |
| Dimensions | 72mm (W) x 136mm (D) x 174mm (H) |
| Enclosure Rating | IP20 |
| Condition | Status is listed as “Obsolete” by some retailers like DigiKey, meaning it is no longer being manufactured. |
Key features
- PID feedback control: Has a built-in PID controller for closed-loop process control.
- Adjustable V/f curve: Offers a 3-point adjustable Voltage/Frequency curve.
- Protection function: Includes comprehensive overload and other protection functions.
- Compact design: As part of the VFD-EL series, it is a micro-type drive suitable for smaller applications.
- Easy DC bus sharing: Designed for side-by-side installation.
Potential applications
This VFD is suitable for lighter-duty applications, such as:
- Small pumps and fans
- Blowing machines
- Conveyor belts
- Simple processing equipment
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