RAC 2.3-200-380-A00-Z1 Bosch Rexroth Indramat
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MPN: R911256132
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The Bosch Rexroth Indramat RAC 2.3-200-380-A00-Z1 is an AC main spindle drive controller and part of the RAC Spindle Drive Controllers series. It features a rated connection voltage of 3 x AC 400 V at 50-60Hz and a rated current of 200 Amps. This unit is cooled by an internal blower and includes an interface terminal X4 with 9 poles, with speed command provided by an analog signal.
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Product Description:
The RAC 2.3-200-380-A00-Z1 is an AC spindle drive controller produced by Bosch Rexroth Indramat and belongs to the RAC Spindle Drive Controllers series. As a main spindle drive controller, the unit receives axis commands from a CNC or motion platform and modulates power for high-speed motor spindles used in machining centers, grinders, and other metal-cutting tools. Installed in an automation cabinet, it sits between the three-phase mains and the spindle motor, providing regulated voltage and current while passing speed reference signals to maintain precise rotational velocity under changing loads. It is intended for machine tools where stable spindle speed supports repeatable cutting conditions during drilling, milling, and grinding operations.
The controller operates from a three-phase supply of 3 x AC 400 V, 50/60 Hz, which suits standard plant distribution networks. At full load, the controller can deliver 200 A, enabling it to energize large high-inertia spindle motors. Thermal energy generated by the power stage is removed by an internal blower, so no external heat exchanger is required in the cabinet. Speed setpoints arrive as an analog ±10 V signal that the control electronics scale directly into torque-producing current. This arrangement allows the drive to follow external speed commands without requiring a digital network for the reference channel. Field wiring for command and feedback is landed on connector X4 with 9 poles, keeping low-level signals on a single plug.
For dynamic braking during rapid deceleration, the unit is supplied with an additional bleeder that dissipates excess DC-link energy through an integrated resistor bank. This helps manage regenerated energy when spindle speed is reduced quickly during repeated speed changes. It is engineered without an additional encoder input, so spindle position feedback must use the primary channel provided by the control system. The unit is in series 2 and version 3.
Frequently Asked Questions about RAC 2.3-200-380-A00-Z1:
Q: What is the rated connection voltage for the RAC 2.3-200-380-A00-Z1 spindle drive controller?
A: The RAC 2.3-200-380-A00-Z1 has a rated connection voltage of 3 x AC 400 V at 50-60Hz for main supply input.
Q: What cooling method does the RAC 2.3-200-380-A00-Z1 employ?
A: This model is equipped with an internal blower or built-in fan for cooling.
Q: What is the rated current output of the RAC 2.3-200-380-A00-Z1?
A: The RAC 2.3-200-380-A00-Z1 provides a rated current of 200 A for spindle drive applications.
Q: What type of speed command signal does the RAC 2.3-200-380-A00-Z1 accept?
A: The speed command input for this spindle drive controller is analogue, utilizing a +/- 10 V signal.
Q: Does the RAC 2.3-200-380-A00-Z1 come with an additional bleeder?
A: An additional bleeder is included in the RAC 2.3-200-380-A00-Z1 model for energy dissipation purposes.
