R911256156 (RAC 2.3-250-460-D0D-W1)

Name: R911256156 (RAC 2.3-250-460-D0D-W1)
Brand: Indramat Drives
SKU: RAC 2.3-250-460-D0D-W1
Price: 822.00 USD

RAC Spindle Drive Controllers

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The Bosch Rexroth drive controller R911256156 (RAC 2.3-250-460-D0D-W1) is designed for precise control of 2AD asynchronous main spindle motors and 1MB frameless spindle motors, providing a continuous output of 65 kW (43 kW continuous shaft output, 78 kW peak for up to 5 seconds). It supports a rated connection voltage of 3 × AC 400 V ±15% at 50 Hz or 3 × AC 460 V at 60 Hz, with a rated current of 250 A. The controller includes a built-in fan for cabinet-external air cooling and operates within a temperature range of +5 to +45°C. The device, weighing approximately 121 kg, supports a digital 16-bit parallel position set-point interface with X4, 25-pole terminal, does not include additional bleeder or encoder input, and is protected to IP10, suitable for installation up to 1000 m above sea level.

Technical Specifications

Control Type
Drive Controller

Continuous Output
65 kW

Rated Connection Voltage
AC 460V

Power Source
AC 3 × 400-460V

Operating Frequency
50/60 Hz

Tolerance
±15%

Key Features
Broad Speed Range, Stiffness, Continuous Power

Continuous Regenerated Output
43 kW

Peak Regenerated Output
78 kW

Maximum Peak Duration
5 seconds

Weight
121 kg

Cooling System
Built-in Fan

Speed Set-Point
16-bit Parallel Digital

Additional Bleeder Resistor
No

Protection Class
IP10

Operating Temperature
5 to 45 ºC

Maximum Temperature
55 ºC

Maximum Installation Height
1000 m

Frequently Asked Questions

What is the rated connection voltage for the RAC 2.3-250-460-D0D-W1 spindle drive controller from Bosch Rexroth Indramat?

This spindle drive controller operates with a rated connection voltage of 3 x AC 400 V, 50 Hz, +/-15% or 3 x AC 460 V.

How is the RAC 2.3-250-460-D0D-W1 spindle drive controller cooled during use?

The RAC 2.3-250-460-D0D-W1 features internal blower cooling with a built-in fan to manage heat during operation.

What is the rated current capacity of the RAC 2.3-250-460-D0D-W1 spindle drive controller?

The rated current for this controller is 250 A, supporting high power spindle applications.

What type of additional interface does the RAC 2.3-250-460-D0D-W1 spindle drive controller offer?

A digital position set-point interface with 16-bit parallel communication is provided for precise control.

Which interface terminal is available on the RAC 2.3-250-460-D0D-W1 spindle drive controller?

The interface terminal for this spindle drive controller is a 25-pole X4 connector, facilitating connectivity.

Common Misspellings

RAC 23250460D0DW1

RAC 2 3 250 460 D0D W1

Rac 2.3-250-460-d0d-w1

Internal Product Review

The RAC 2.3-250-460-D0D-W1 is an AC main spindle drive controller from the Bosch Rexroth Indramat RAC series, designed for demanding spindle applications with a rated current of 250 A and a rated connection voltage supporting 3 x AC 400 V, 50 Hz, +/-15% or 3 x AC 460 V. Internal blower cooling and a digital 16-bit parallel speed command interface ensure reliable operation and excellent control precision. This controller stands out for robust performance and integration flexibility in high-power spindle systems.