The Delta VFD022EL21A is a sensorless vector AC micro drive sized for a 2.2 kW (3 HP) motor on a 1-phase 200-240 V supply, delivering 11.0 A of rated output current across a 0.1-599 Hz output range. Fan-cooled with an IP20 enclosure, it sits in the compact end of Delta's VFD-EL micro-drive family — the kind of footprint a panel builder drops into a machine-tool retrofit or a small conveyor MCC bucket rather than a plant-wide drive lineup.
Sizing the motor and reading the input current
The 11.0 A rated output current at 4.2 kVA capacity is the figure that governs motor pairing — a 2.2 kW motor pulled up to its service factor will stay inside this envelope, and the sensorless vector control gives enough low-speed torque for conveyors, mixers and small fans without an encoder feedback loop. On the input side, 24 A at 1-phase 200-240 V is what the upstream breaker, contactor and wiring have to be rated for; the ± 10 % voltage window and ± 5 % frequency tolerance mean a site with marginal supply — older mills, generator-backed lines — still rides through without nuisance trips.
Carrier frequency and where to plan derating
Carrier frequency is settable from 2 kHz up to 12 kHz — pushing it higher quiets motor whine on a quiet machine, but the continuous output current derates as the switching loss climbs, so the panel layout and the motor cable length have to be factored in before a buyer assumes the 11.0 A headline rating holds at every setting. The 1-phase input on a 2.2 kW drive is also worth flagging on the BOM line — single-phase supply to a drive this size pulls real current on the L leg, and the upstream protection device has to be sized for the 24 A input figure, not just the motor's nameplate FLA.
Sourcing posture for the VFD022EL21A
Delta positions the VFD-EL family as an economy micro drive, and the VFD022EL21A is the 2.2 kW slot in that line — a standard build, not a special variant. The buyer queries that follow this part — availability, price, supplier — are answered through that RFQ channel rather than from a fixed stock count.