Choosing a variable frequency drive for a motor control setup usually comes down to input power, horsepower, and how much risk you are willing to accept. The right choice depends on the supply you have and the motor you need to turn. These two drives sit at opposite ends of that decision: the Control Techniques Vortek SP1406 Unidrive SP and the 1-to-3 phase 2.2 KW VFD.
Quick verdict
If your existing setup is built around a specific industrial drive family, the Vortek SP1406 is the drive to evaluate. If you want a compact inverter, the 1-to-3 phase 2.2 KW VFD is the more direct fit. In short, the Vortek is about matching an existing industrial drive family; the 2.2 KW is about getting a fresh drive with a smaller footprint.
Comparison
| Vortek SP1406 Unidrive SP | 1-to-3 Phase 2.2 KW VFD | |
|---|---|---|
| Price | USD 359.97 | USD 65.83 |
| Condition | Used | New |
| Brand | Control Techniques | marddpair |
| Model / Part No. | Unidrive SP / SP1406 | 2.2 KW VFD / AMZ1095640 |
Where each drive wins
Vortek SP1406 Unidrive SP
The Vortek is a specific drive family rather than a generic inverter. It was removed from a working environment, which points to real service history. If you are extending an existing setup, that background makes it a candidate to match.
1-to-3 Phase 2.2 KW VFD
The 2.2 KW VFD wins on being a fresh unit and a space-conscious layout. Its narrow body and independent air duct are aimed at panel installations. If that fits your panel, this is the side to start from.
Product notes
Vortek SP1406 Unidrive SP
If your priority is a specific industrial drive family, the Vortek SP1406 gives you that identity with a Control Techniques badge and the Unidrive SP model. The unit was removed from a working environment, which is the kind of history that matters when you are maintaining an existing installation. The trade-off is the used, as-is condition and the fact that only pictured items are included. Plan for inspection before making it part of a critical motor control run. It also carries the higher price in this comparison, so it makes sense when you need that particular drive type, not when you are looking for the least expensive path to three-phase output.
1-to-3 Phase 2.2 KW VFD
When you want a new inverter with concrete electrical specs, the 1-to-3 Phase 2.2 KW VFD delivers: 3 HP, 220 V input, 1-phase input, 23 A input current, 50-60Hz, and a 10-95% relative humidity range without dew. Those numbers make it easy to compare against your motor and supply. The limitation is the input phase: the drive is listed as 1-phase input, so a three-phase supply would not match this unit. That puts it in the single-phase-fed shop category, where the goal is to run a three-phase motor from a 220 V single-phase line. The independent air duct and narrow body are a bonus for tight control cabinets.
Final choice by use case
Pick the Vortek SP1406 when you are maintaining or extending an existing installation in that drive family and can accept the as-is condition terms. Pick the 1-to-3 Phase 2.2 KW VFD when you want a compact drive and your supply matches the electrical details above. For most single-phase-fed installations, the 2.2 KW VFD is the practical starting point; for shops already invested in that industrial drive family, the Vortek is the logical candidate.
