SPX040A1-4A1N1

The Eaton Cutler-Hammer SPX040A1-4A1N1 is an advanced AC adjustable frequency drive designed for industrial applications requiring precise motor control. This drive can handle 40 horsepower when operating at 480 volts. Its input voltage range consists of 380 to 500 VAC for three-phase systems, making it versatile for various installations.

Frequency adjustment spans from 0 to 320 Hz, ensuring flexibility for different operational needs. It boasts exceptional frequency accuracy, with digital accuracy at ±0.01% of the set frequency and an analog option at ±0.4% of the maximum frequency. The switching frequency of the drive can be adjusted between 1 to 10 kHz, with the default setting at 3.6 kHz, providing options for different applications.

Overload ratings are substantial, as this drive permits 150% for 60 seconds during heavy-duty applications and 110% for standard conditions, ensuring reliable performance even under demanding tasks. Control modes for the unit include sensorless vector, voltage/frequency control (V/f), and an optional closed-loop vector configuration.

The enclosure is rated NEMA 1 / IP21, making it suitable for indoor environments where protection against dust and water is not critical. Additionally, it includes built-in Class C2/C3 EMC filtering to reduce electromagnetic interference for increased operational stability. The user interface features an alphanumeric keypad enhanced with an OLED display for convenient monitoring and configuration.

While this drive does not include a brake chopper, it supports expansions through standard I/O boards and an optional Ethernet/IP card, enabling greater connectivity and functionality within integrated systems.