Delta · VFD-EL-W
VFD022EL21W is a Delta VFD Drive. It is used in pump sets, conveyor belts, fan and compressor drives where the installed unit is matched to the original catalog number and a compact, documented part is required.
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Rated operational voltage3-phase 400 V AC
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Overload capacity150% for 60 s
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Enclosure ratingIP20 (IEC 60529)
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Frequency50/60 Hz
Specifications
| Electrical |
| Rated operational voltage |
3-phase 400 V AC |
| Supply voltage |
1-phase 200...240 V / 3-phase 380...480 V AC |
| Frequency |
50/60 Hz |
| Control method |
V/f, sensorless vector (IEC 61800-2) |
| Overload capacity |
150% for 60 s |
| Mechanical |
| Mounting |
Cabinet / DIN rail |
| Enclosure rating |
IP20 (IEC 60529) |
| Environment and compliance |
| Operating temperature |
0...+40 °C (IEC 60068-2-1) |
| Certifications |
CE, UL, cULus |
Product type and series follow the official Delta download-centre catalogue search for this model which lists VFD022EL21W under the Delta product line; the product type published for this catalog number is "VFD Drive". Source: https://downloadcenter.deltaww.com/en-US/DownloadCenter?q=VFD022EL21W. Numeric ratings in the table above are the values carried on this page and must be confirmed against the original Delta manufacturer datasheet before they are treated as this catalog number's ratings; they are not estimated here.
Model comparison in the same family
| Delta VFD-EL-W variants |
| Catalog number |
Overload capacity |
Rated operational voltage |
Frequency |
|
VFD022EL21W (this page) |
150% for 60 s |
3-phase 400 V AC |
50/60 Hz |
VFD022EL21A
| 3-phase 400 V AC |
50/60 Hz |
VFD022EL23A
| 3-phase 400 V AC |
50/60 Hz |
VFD022EL43A
| 3-phase 400 V AC |
50/60 Hz |
Before selecting an alternative, confirm its dimensions, terminals and installation requirements in the manufacturer documentation.
Where it sits in the control system
The VFD022EL21W is the drive element in a Delta motor installation. It supplies the motor with controlled power and carries the output frequency and overload behaviour, so the motor and the supply conductor are sized to the ratings stated in the manufacturer documentation, not to a generic assumption.
Typical installations place it in pump sets, conveyor belts, fan and compressor drives, where the unit is matched to the original catalog number and the enclosure provides Cabinet / DIN rail support. Record the catalog number and revision from the nameplate of the installed unit before specifying a like-for-like spare.
Selection notes for Delta VFD022EL21W
Delta VFD022EL21W — Variable frequency drive for motor speed and torque control in pumps, fans, conveyors and general industrial machinery. The figures below are taken from the specification table on this page for catalog number VFD022EL21W; confirm the installed unit's part number and revision so the replacement matches both electrically and mechanically.
- Overload capacity: 150% for 60 s — Use it as the reference when cross-checking a current-production equivalent.
- Rated operational voltage: 3-phase 400 V AC — Verify it in the project documentation before confirming the order.
- Frequency: 50/60 Hz — Check this value against the nameplate of the installed unit before ordering.
- Operating temperature: 0...+40 °C (IEC 60068-2-1) — Match it to the existing panel and upstream protection.
For a discontinued unit, match function and electrical ratings rather than the label alone.
Common questions about VFD022EL21W
Q.Which official Delta document defines VFD022EL21W?
The official Delta download-centre catalogue search for this model lists VFD022EL21W under the Delta product line, and the product type published for this catalog number is "VFD Drive". The document and its official catalogue record are publicly retrievable at https://downloadcenter.deltaww.com/en-US/DownloadCenter?q=VFD022EL21W. Use that document as the authority for ratings and installation conditions before ordering.
Q.For VFD022EL21W, what does the specification table state about supply voltage?
The specification table lists supply voltage = 1-phase 200...240 V / 3-phase 380...480 V AC for Delta VFD022EL21W. Confirm this figure against the unit currently in the panel.
Q.Which value is published under control method for catalog number VFD022EL21W?
For VFD022EL21W, control method is given as V/f, sensorless vector (IEC 61800-2). Use the value as the reference when sourcing a current-production equivalent.
Q.Before ordering VFD022EL21W, which overload capacity entry should be checked?
The overload capacity entry quoted above is 150% for 60 s. Check the revision of the installed unit if the catalog number has been superseded.
Q.How do I confirm compatibility of VFD022EL21W before ordering?
Match the catalog number VFD022EL21W and the specification values listed above against the installed unit, then confirm the firmware or hardware revision where a revision-sensitive part is involved.
Q.What should I include in an enquiry for VFD022EL21W?
Send the full catalog number VFD022EL21W, the required quantity and a photo of the nameplate. Stock, lead time and the applicable compliance documents can then be confirmed for Delta VFD022EL21W.