RAC 2.3-250-380-A00-Z1

The Bosch Rexroth Indramat RAC 2.3-250-380-A00-Z1 is a high-performance member of the RAC Spindle Drive Controllers series designed for precision spindle drive applications. This AC Main Spindle Drive Controller operates at a Rated Connection Voltage of 3 x AC 400 V, 50-60Hz and delivers a robust Rated Current of 250 A. Equipped with an additional bleeder circuit for controlled discharge, it ensures safe operation during shutdowns and maintenance intervals. The primary function of this controller is to provide precise speed regulation and torque control for main spindles in machining centers, ensuring smooth, accurate performance under varying load conditions.

In terms of technical details, the RAC 2.3-250-380-A00-Z1 features an Internal Blower / Built-in fan cooling system that efficiently manages heat dissipation, extending component life and minimizing thermal-related faults. The controller interfaces through a 9-pole X4 terminal, supporting an analogue Speed Command (+/- 10 V) input for seamless integration with CNC and automation systems. As a device of Series 2, Version 3, it reflects the latest generation of Rexroth spindle drive technology. Notably, the controller is supplied Without additional encoder input, simplifying the configuration for applications that rely on spindle encoder feedback from separate modules.

Designed for industrial reliability, this unit’s built-in cooling blower and additional bleeder contribute to enhanced durability, even in high-duty-cycle environments. The analogue speed reference and standard interface terminals ensure compatibility with a broad range of machine tool control systems. By omitting an integral encoder input, the design reduces unnecessary circuit complexity and facilitates modular system architectures. Certified to meet rigorous Bosch Rexroth quality standards, the RAC 2.3-250-380-A00-Z1 boost operational efficiency and uptime, making it an ideal choice for demanding CNC machining, milling, and grinding applications where precise spindle control is paramount.