RAC 2.2-250-460-DP0-W1

The Bosch Rexroth Indramat RAC 2.2-250-460-DP0-W1 is part of the RAC Spindle Drive Controllers series, designed for precise control of asynchronous main spindle and frameless spindle motors. This AC Main Spindle Drive Controller supports a Rated Connection Voltage of 3 x AC 400 V, 50 Hz, +/-15% or 3 x AC 460 V and delivers a Rated Current of 250 A for robust power delivery. Its primary function is to manage spindle speed and torque with high reliability, making it ideal for CNC machining and high-precision industrial applications.

The controller features an Additional Encoder Input for spindle feedback and is compatible with a High-resolution INDRAMAT encoder (~) to ensure accurate position control. Signals are managed through a 25-pole Interface Terminal X4, while speed setpoints are issued via a Digital (16 bit parallel) Speed Command interface. Cooling is handled by an Internal Blower / Built-in fan, maintaining optimal operating temperatures under continuous load. The design omits an Additional Bleeder, simplifying the internal circuit layout and reducing maintenance points.

Constructed as a Series 2, Version 2 unit, the RAC 2.2-250-460-DP0-W1 offers seamless compatibility with standard three-phase supply networks at 400 V or 460 V. Its integrated cooling system and lack of additional bleeder components enhance durability and reduce downtime. The high-resolution encoder input and digital speed command ensure efficient, repeatable spindle positioning, while the robust interface terminal guarantees secure connections. In industrial settings the controller delivers consistent performance, improved spindle accuracy, and reliable operation under demanding conditions, contributing to increased productivity and reduced maintenance costs.