RAC 2.2-250-380-D0I-W1

The Bosch Rexroth Indramat RAC 2.2-250-380-D0I-W1 from the RAC Spindle Drive Controllers series combines robust engineering and precise control in a single package. This AC Main Spindle Drive Controller is designed for industrial spindle applications and operates at a Rated Connection Voltage of 3 x AC 400 V, 50-60Hz with a continuous Rated Current of 250 A. Equipped with an Internal Blower / Built-in fan cooling system, the drive maintains optimal thermal conditions even under sustained loads. Version 2 of Series 2 introduces updated firmware and hardware refinements for enhanced reliability and longer service intervals.

Connectivity and command flexibility are central to the RAC 2.2-250-380-D0I-W1’s design. The unit features a high-density Interface Terminal X4, 25 poles for power and signal distribution, alongside a Digital (16 bit parallel) Speed Command interface that accepts precise motion profiles. A standard Speed Set-Point of 10V analog input provides compatibility with existing speed regulators, while an Incremental encoder output additional interface delivers real-time feedback for closed-loop accuracy. The controller ships Without additional bleeder circuitry and Without additional encoder input, reducing complexity for installations where external components manage those functions.

Installation and commissioning are streamlined through a compact footprint and clearly labeled terminal connections. The combination of digital speed commands and incremental encoder feedback ensures rapid response and stable spindle performance across a broad RPM range. Built to withstand harsh factory environments, the drive’s integrated blower and fan system safeguards internal components against overheating, guaranteeing consistent throughput for milling, drilling, and grinding operations.