RAC 2.2-250-460-D0D-W1 Bosch Rexroth Indramat
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MPN: R911244177
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The Bosch Rexroth Indramat RAC 2.2-250-460-D0D-W1 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It features a rated connection voltage of 3 x AC 400 V, 50 Hz, plus or minus 15%, or 3 x AC 460 V, and delivers a rated current of 250 Amps. The controller includes an internal blower for cooling and a digital 16-bit parallel position set-point interface.
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Product Description:
The RAC 2.2-250-460-D0D-W1 is an AC main spindle drive controller manufactured by Bosch Rexroth Indramat for the RAC Spindle Drive Controllers series. Classified as an AC main spindle drive controller, it links a motion control system to a high-speed spindle and executes the speed and position loops required in metal-cutting and grinding centers. That role lets the controller respond to commanded spindle changes during machining passes where stable rotation is important in automated equipment. The unit is Series 2 and keeps a compact rack profile, so it can be mounted close to the machining axis. Its built-in fan handles thermal dissipation without external ducting.
Line power enters through a 3 x AC 400 V, 50 Hz, ±15% or 3 x AC 460 V three-phase supply, and the power section can deliver a continuous 250 A to the spindle motor. Heat generated by these currents is removed by a built-in fan, permitting full-load operation inside sealed cabinets. Command and feedback wiring terminate on the X4 25-pole connector, so the interface is routed through a single plug at the drive. Position references arrive as a 16-bit parallel digital position set-point, allowing the drive to follow CNC blocks without analog conversion delay. Integrated logic scales this data to velocity and torque targets so the spindle can track rapid feed changes during tapping, milling, or contouring.
The drive also accepts velocity words as a 16-bit parallel digital speed command, which keeps the command format consistent across multiple motion channels. This variant is supplied without an additional bleeder, so applications with high regenerative braking demand may require an external resistor. It is also supplied without an additional encoder input, so spindle feedback is handled through the standard motor encoder line. The unit is Version 2. That version matches the release level used for this drive model.
Frequently Asked Questions about RAC 2.2-250-460-D0D-W1:
Q: What cooling method does the RAC 2.2-250-460-D0D-W1 spindle drive controller use?
A: The RAC 2.2-250-460-D0D-W1 spindle drive controller features internal blower cooling with a built-in fan to dissipate heat.
Q: What is the rated connection voltage for the RAC 2.2-250-460-D0D-W1?
A: This model supports a rated connection voltage of 3 x AC 400 V at 50 Hz with ±15% tolerance, or 3 x AC 460 V.
Q: What is the rated current of the RAC 2.2-250-460-D0D-W1 spindle drive controller?
A: The RAC 2.2-250-460-D0D-W1 has a rated current of 250 A, making it suitable for heavy-duty applications.
Q: What type of position set-point interface is available on the RAC 2.2-250-460-D0D-W1?
A: This drive controller provides a digital position set-point interface with 16 bit parallel input.
Q: Does the RAC 2.2-250-460-D0D-W1 spindle drive controller come with an additional bleeder?
A: No additional bleeder is included in the RAC 2.2-250-460-D0D-W1 model.
