SPX075A1-4A1B1

The Eaton Cutler-Hammer SPX075A1-4A1B1 adjustable frequency AC drive is tailored for a range of industrial applications. Its nominal power capability reaches 75 hp (55 kW), ensuring reliable performance in standard duty conditions. Engineered for indoor placement, it features a protective enclosure rated NEMA 1 / IP21, offering a degree of environmental shielding suitable for specific indoor settings.

Designed to handle a main input voltage of 380 to 500 V AC within a 3-phase system, the drive can output voltages of 400 V, 480 V, or 500 V AC in a 3-phase arrangement. Users benefit from the capacity to adjust the output frequency between 0 and 320 Hz, with fine resolution adjustments to 0.01 Hz, allowing for exact frequency control necessary for varied applications.

In terms of current handling, the drive provides a continuous output current of 140 A when accounting for a 110% overload and has the ability to manage up to 105 A under a 150% overload scenario. Additionally, the AC line frequency is automatically configured to either 50 Hz or 60 Hz, depending on the operational setup.

The integrated features of this drive include a built-in brake chopper which aids in controlling motor dynamics. The inverter type employed is a six-pulse IGBT design, enhancing the drive's efficiency. For interfacing, it offers two analog inputs, compatible with either 0-10 V or 0/4-20 mA signals, along with six programmable digital inputs rated for up to 30 V DC. Relay outputs are also part of the design, including two programmable form C outputs, enabling flexible control over connected equipment.