EMERSON SP4401 Variable Frequency Drive Control Techniques Unidrive SP 66 Lbs 50 HP 37 KW

EMERSON SP4401 Variable Frequency Drive Control Techniques Unidrive SP 66 Lbs 50 HP 37 KW

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Control Techniques SP4401 AC Drive
The Control Techniques SP4401 AC Drive is a robust, versatile motor control solution crafted to meet the demands of diverse industrial applications. As a key member of the well-regarded Unidrive SP series, it delivers a reliable, efficient approach to regulating motor operations—ideal for environments where precise control over speed, torque, and position is essential. With its advanced functionalities and high-performance capabilities, the SP4401 stands out as a top choice for industries seeking consistent, accurate, and energy-efficient motor control.
Power and Performance Specifications
Engineered for exceptional power and performance, the SP4401 AC Drive is well-suited to a wide range of industrial use cases. In Normal Duty mode, it supports a typical motor output power of 37 kW (equivalent to 50 horsepower/HP), enabling it to handle demanding tasks such as controlling pumps, fans, compressors, conveyors, and other heavy-duty machinery. Even in Heavy Duty mode—where performance requirements are more rigorous—it maintains a substantial motor output power of 30 kW (40 HP), ensuring reliable operation across tough applications.

The drive operates efficiently within an input voltage range of 380–480 VAC, a standard in industrial settings, ensuring seamless compatibility with conventional power systems. It also excels in current management: in Normal Duty mode, it can handle a maximum continuous current of 68 amps, while in Heavy Duty mode, it sustains up to 60 amps. This capacity to manage high current levels directly enhances the drive’s reliability and effectiveness across various operational scenarios.
Frame Size and Installation Flexibility
Classified as a Frame Size 4 drive, the SP4401 balances compact design with robust power—making it a space-efficient yet high-performance motor control solution. Frame size is a critical factor in drive selection, as it impacts both ease of installation and compatibility with existing systems. The SP4401’s compact form allows for straightforward integration into control panels and machinery, even in space-constrained environments. This flexibility is particularly valuable for industries looking to upgrade their motor control systems without undertaking extensive modifications to their current setups.
Advanced Control Capabilities
The Control Techniques SP4401 AC Drive is equipped with advanced control features that elevate its performance and adaptability. It supports multiple control modes, including V/Hz control, Open Loop Vector control, and Closed Loop Vector control—allowing it to tailor its operation to the unique requirements of different applications. Whether the task calls for simple speed regulation or more complex torque and position control, the SP4401 delivers precise, dependable performance. This versatility makes it an excellent fit for industries spanning manufacturing, processing, and material handling.
Energy Efficiency and Cost Savings
A standout attribute of the SP4401 AC Drive is its ability to boost energy efficiency in motor operations. By optimizing motor speed and torque to align with real-time load demands, the drive minimizes unnecessary energy consumption—translating to significant long-term cost savings. Its efficiency is further enhanced in Heavy Duty mode, where it manages demanding tasks without wasting excess power. This focus on energy efficiency not only reduces operational costs but also supports more sustainable industrial processes.

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