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SP1403/1404/1405/1406 Parameter Comparison
SP1403, SP1404, SP1405, and SP1406 are specific models of the Unidrive SP series inverters under Emerson CT (Control Techniques). These series products all belong to the Frame 1 specification, but there are significant differences in power, rated output current, and other aspects.
Here is a comparison of the key parameters for these models:
1. Core Electrical Specifications Comparison (400V Class)
These models are all suitable for a three-phase AC 380V-480V input environment; the main difference lies in their power capacity.
| Model | Typical Motor Power (kW) | Continuous Output Current (A) | Peak Output Current (A) | Size (Frame) |
|---|---|---|---|---|
| SP1403 | 1.5 kW | 4.1 A | 6.1 A | Frame 1 |
| SP1404 | 2.2 kW | 5.8 A | 8.7 A | Frame 1 |
| SP1405 | 3.0 kW | 7.5 A | 11.2 A | Frame 1 |
| SP1406 | 4.0 kW | 9.5 A | 14.2 A | Frame 1 |
Data source references the Unidrive SP Selection Manual.
2. Common Technical Characteristics
Despite differing power ratings, these models maintain consistency in functionality and expandability:
Control Modes: Support open-loop vector, closed-loop vector, servo mode, and RFC mode.
Expansion Capability: Equipped with 3 general option slots as standard, allowing installation of I/O expansion cards, communication bus cards (e.g., Profibus, EtherCAT), or position feedback cards.
Auxiliary Power Supply: Support 24Vdc external auxiliary power to maintain control circuit operation when the main power is off.
Storage Medium: All support using a SmartCard for parameter backup, cloning, and transfer.
3. Application Suggestions
Backward Compatibility: During maintenance replacement, higher capacity models can usually substitute lower capacity models (e.g., SP1404 can replace SP1403), provided that parameter settings (such as motor rated current) are re-adjusted.
Size Consideration: Since all four of these models belong to the Size 1 frame, their mounting holes and physical casing dimensions are identical, facilitating interchangeable use within the control cabinet.
For more detailed parameter setting guidance, it is recommended to consult the Control Techniques Official User Guide (Unidrive SP User Guide).
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