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R911256138 (RAC 2.3-250-380-L00-W1)

RAC Spindle Drive Controllers

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The R911256138 (RAC 2.3-250-380-L00-W1) is a Bosch Rexroth Indramat series-2 AC main spindle drive controller designed for high stiffness and power in 3-phase applications. It supports 1MB frameless motors and the 2AD series motor, providing internal positioning loop control with resolution up to 1/4,000,000 revolutions. Electrical specifications include a connection voltage of 3 x AC 400 V at 50-60 Hz and a rated current of 250 A. The unit features a SERCOS interface for real-time speed, torque, and position parameterization, without additional encoder input or bleeder. Cooling is managed with an internal blower, heat sink, and fan; installation should maintain 125 mm horizontal and 260 mm vertical clearance for proper airflow. Heat sink cleanliness is necessary for safe operation.

Technical Specifications

Phases
3

Design Type
Type-3

Interface
SERCOS

Additional Encoder Input
No

Additional Interface
No

Additional Bleeder
No

Programming Module
AS

Cooling System
Built-in Fan

Minimum Distance from Horizontal Barriers
125 mm

Minimum Distance from Vertical Barriers
260 mm

Voltage
3 x AC 400V/50-60Hz

Current
400 Amps

Resolution
Up to 1/4,000,000 of a revolution

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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 2.3-250-380-L00-W1.

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North Carolina Office

Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

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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.