R911238161 (RAC 2.2-250-380-A0S-W1)

RAC Spindle Drive Controllers

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The Indramat MPN R911238161 (RAC 2.2-250-380-A0S-W1) is an AC main spindle drive controller engineered for pairing with high current control servo motors such as Indramat 2AD and 1MB, primarily used in CNC and other industrial machinery. It integrates a closed-loop control system for precise spindle positioning per software commands. The unit operates at a rated connection voltage of 3 x AC 400V (50-60Hz) or 3 x AC 460V, with a rated current of 250 A. Cooling is managed via an internal blower and built-in fan, with optional cooling hose integration. The controller supports a continuous output of 65 kW and a peak power output of 78 kW, and can function in ambient temperatures up to 55°C. The device features a serial RS 232-C interface, an analogue speed command input (+/- 10 V), and an X4 9-pole interface terminal. Weight is approximately 121 kg. Additional bleeder and additional encoder input are not included.

Technical Specifications

Application
Numercially Controlled Industrial Machines

Servo Motor Compatibility
INDRAMAT 2AD, 1MB Frameless Spindle Motors

Temperature Control System
Built-in Fan and Heatsink

Additional Cooling
Cooling Hose (optional)

Control Voltage
AC 400Volts or AC 460 Volts

Continuous Power Output
65 Kilowatts

Peak Power Output
78 Kilowatts

Ambient Temperature Tolerance
Up to 55 Degrees Celsius

Weight
121 Kilograms

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Internal Product Review

The RAC 2.2-250-380-A0S-W1 is an AC main spindle drive controller from the RAC series by Bosch Rexroth Indramat, offering a robust 250 A rated current and a rated connection voltage of 3 x AC 400 V. It features an internal blower for efficient cooling and supports speed command via analogue (+/- 10 V), making it well-suited for demanding spindle applications. The reliable performance and built-in fan design highlight its suitability for continuous industrial operation.

1620 Old Apex Road
Cary, NC 27513, USA

Toll Free: 1-888-551-3082
International: 1-919-443-0207

Fax: 1-919-867-6204

[email protected]

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Indramat USA 1 Year Warranty

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We offer a repair service for the RAC 2.2-250-380-A0S-W1.

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North Carolina Office

Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

Phone

Toll Free: 1-888-551-3082
International: 1-919-443-0207

Indramat USA sells factory new and pre-owned surplus products and maintains channels to procure supply. Indramat USA is not affiliated with nor an authorized distributor or representative of any manufacturers, brands or products listed. Designated trademarks, brand names, and brands appearing herein are the property of their respective owners.