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

Name: R911256138 (RAC 2.3-250-380-L00-W1)
Brand: Indramat Drives
SKU: RAC 2.3-250-380-L00-W1
Price: 347.00 USD

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

Frequently Asked Questions

What is the rated connection voltage for the RAC 2.3-250-380-L00-W1?

The rated connection voltage for the RAC 2.3-250-380-L00-W1 is 3 x AC 400 V, 50-60 Hz.

Does the RAC 2.3-250-380-L00-W1 have an additional encoder input?

No, the RAC 2.3-250-380-L00-W1 does not have an additional encoder input.

What type of interface terminal does the RAC 2.3-250-380-L00-W1 use?

The interface terminal is X4 using optical waveguides for the RAC 2.3-250-380-L00-W1.

What type of speed command does the RAC 2.3-250-380-L00-W1 use?

The speed command is provided via SERCOS interface for the RAC 2.3-250-380-L00-W1.

What type of cooling does the RAC 2.3-250-380-L00-W1 have?

The cooling is provided by an internal blower / built-in fan for the RAC 2.3-250-380-L00-W1.

Common Misspellings

RAC 23250380L00W1

RAC 2 3 250 380 L00 W1

Rac 2.3-250-380-l00-w1

Internal Product Review

The RAC 2.3-250-380-L00-W1 provides smooth SERCOS interface communication and reliable spindle operation. Its internal cooling system ensures stable long-term performance, making it suitable for automated production lines.