SP5402
Emerson Control Techniques SP5402 / SP-5402 Variable Frequency Drive
SP5402 is a frame-size 5 Unidrive SP universal AC/servo drive for 380–480 VAC three-phase systems. Control Techniques documentation lists separate normal-duty and heavy-duty current and power ratings, so the installed duty mode and full nameplate must be checked before ordering.
The equipment record identifies the unit as an Emerson VFD with part number SP-5402, three-phase 380–480 VAC input at 152 A, 0–480 V output at 150/168 A, 75/90 kW power and 50/60 Hz frequency. It records the manufacturer shorthand "EMERSN" and WW Electrical use for IWTP-II. For this installation, confirm the physical drive nameplate because the official Control Techniques documentation distinguishes normal-duty and heavy-duty ratings.
Product Identification And Ratings
| Manufacturer identification | Emerson / Control Techniques |
| Model | SP5402 |
| Alternate written form | SP-5402 |
| Product family | Unidrive SP universal AC/servo drive |
| Drive size | Frame size 5 |
| Input supply class | 380–480 VAC ±10%, three-phase, 50/60 Hz |
| Equipment input record | 380–480 VAC, 152 A |
| Equipment output record | 0–480 V, 150/168 A |
| Recorded power rating | 75/90 kW |
| Project reference | WW electrical for IWTP-II |
| Normal-duty rating | 168 A maximum continuous output; 90 kW (125 hp) typical motor power |
| Heavy-duty rating | 156 A maximum continuous output; 75 kW (125 hp) typical motor power |
Duty Rating Selection
Normal Duty
Official rating: 168 A maximum continuous output and 90 kW (125 hp) typical motor power. Confirm the motor and load profile meet the manufacturer duty assumptions.
Heavy Duty
Official rating: 156 A maximum continuous output and 75 kW (125 hp) typical motor power. Check overload demand and switching-frequency derating against the complete installation.
Applications And Integration Checks
Lifecycle And Replacement Guidance
Frequently Asked Questions
Which supply and motor rating should be confirmed before ordering SP5402?
Confirm a three-phase 380–480 VAC supply, the required normal-duty or heavy-duty rating, motor nameplate data, overload demand and the exact drive label. The supplied project text states 50/60 Hz and 75/90 kW; official Control Techniques data differentiates the two duty ratings.
Why do the current values for SP5402 differ between the supplied equipment text and official technical data?
The supplied equipment text records 150/168 A output, while the official Unidrive SP brochure lists 156 A heavy duty and 168 A normal duty for SP5402. Confirm the physical nameplate, duty mode and original project documentation before quotation or replacement.
Is M701-08401570A10101AB100 the official replacement for SP5402?
Control Techniques maps SP5402 to Unidrive M701 order code M701-08401570A10101AB100 in its crossover guide. The guide also requires application-specific review, so the mapping should be treated as a selection starting point rather than an automatic installation approval.
Can an M701 replace SP5402 without engineering changes?
Do not assume a direct swap. Confirm frame and mounting dimensions, supply and motor ratings, control wiring, encoder or feedback type, option modules, communications, keypad requirements, safety functions, braking hardware and parameter conversion. Applications using SM-Ethernet may require an M700-series selection instead.
What information is needed to quote a replacement for SP5402?
Provide clear photos of the complete drive nameplate and installed option modules, the motor nameplate, supply voltage, duty and overload requirements, feedback device, fieldbus, keypad, braking arrangement, enclosure environment, parameter backup and the application or project reference.
Model Identification
Use the exact model SP5402. The supplied manufacturer part number is SP-5402, the manufacturer field is Emerson, and the project record abbreviates the brand as "EMERSN". The equipment record describes a variable-frequency drive with 380–480 VAC, 152 A input; 0–480 V, 150/168 A output; 75/90 kW power; three-phase, 50/60 Hz operation; and WW Electrical use for IWTP-II. Search variants such as "SP 5402" can help locate records, but quotation and replacement selection must be based on the complete physical nameplate and installed options.
Manufacturer References
Control Techniques / Nidec official Unidrive SP product brochure; Unidrive SP Product Lifecycle Status document PLSSP201512 Revision B dated June 12, 2020; and the official Unidrive SP to Unidrive M701 Crossover Guide.
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