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.
Rated Connection Voltage
3 x AC 400 V, 50-60Hz
Additional Bleeder
Without additional bleeder
Additional Interface
Incremental encoder output
Cooling
Internal Blower / Built-in fan
Device Type
AC Main Spindle Drive Controller
Rated Current
250 A
Additional Encoder Input
Without additional encoder input
Series
2
Version
2
Interface Terminal
X4, 25 poles
Speed Command
Digital (16 bit parallel)
Speed Set-Point
10V