R911256157 (RAC 2.3-250-460-D0I-W1)

Name: R911256157 (RAC 2.3-250-460-D0I-W1)
Brand: Indramat Drives
SKU: RAC 2.3-250-460-D0I-W1
Price: 782.00 USD

RAC Spindle Drive Controllers

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The Bosch Rexroth MPN R911256157 (RAC 2.3-250-460-D0I-W1) is an industrial AC main spindle drive controller designed for operation with a 3-phase AC power supply at 400–460 V and 50/60 Hz. The unit is rated for 250 A and provides a continuous controller output of 65 kW. It features a digital 16-bit parallel speed set-point interface that connects to a PLC, but does not support an additional encoder input or an external bleeder resistor. Protection class is IP10 with DIN 40 040 humidity category F, and it operates within ambient temperatures of +5 to +45 °C. The controller has an internal cooling blower and an interface terminal X4 (25 poles), making it suitable for managing 2AD asynchronous and 1MD frameless spindle motors. Weight is approximately 121 kg.

Technical Specifications

Operating Frequency
50/60 Hz

Tolerance
plus/minus 15%

Operational Current
400 A

Continuous Controller Output
65 kW

Parallel Speed Set-point
16-bit

Humidity Category
F

Ideal Operating Temperature
+5 to +45 ͦC

Weight
121 kg

Cooling System
Built-in fan using the control cabinet outside air

Peak Output
78 kW

Global Shipping
Available

Frequently Asked Questions

How is the RAC 2.3-250-460-D0I-W1 spindle drive controller cooled during operation?

The RAC 2.3-250-460-D0I-W1 uses an internal blower with a built-in fan for cooling to maintain optimal operating temperatures.

What is the rated connection voltage specification for the RAC 2.3-250-460-D0I-W1 drive controller?

The rated connection voltage for this model is 3 x AC 400 V at 50 Hz, with a tolerance of +/-15%, or 3 x AC 460 V.

What type of additional interface does the RAC 2.3-250-460-D0I-W1 spindle drive controller include?

This model is equipped with an incremental encoder output as its additional interface feature.

What kind of speed command input does the RAC 2.3-250-460-D0I-W1 spindle drive controller support?

The RAC 2.3-250-460-D0I-W1 supports a digital speed command input with a 16-bit parallel interface.

What is the rated current output for the RAC 2.3-250-460-D0I-W1 spindle drive controller?

The RAC 2.3-250-460-D0I-W1 has a rated current capacity of 250 A, suitable for demanding spindle drive applications.

Common Misspellings

RAC 23250460D0IW1

RAC 2 3 250 460 D0I W1

Rac 2.3-250-460-d0I-w1

Internal Product Review

The RAC 2.3-250-460-D0I-W1 is an AC main spindle drive controller from the Bosch Rexroth Indramat RAC series, designed for high-current applications with a rated connection voltage of 3 x AC 400 V or 460 V and a robust 250 A output. Internal blower cooling supports reliable thermal management, while the digital 16-bit parallel speed command and incremental encoder output provide precise control and feedback for demanding spindle operations. This controller is a solid choice for environments requiring consistent, high-capacity spindle drive performance.