Product Description:

Bosch Rexroth Indramat manufactures the RAC 2.3-200-380-D00-Z1, a member of the RAC Spindle Drive Controllers series. As an AC main spindle drive controller, it supplies regulated three-phase power to high-speed machining spindles and manages speed and torque feedback within automated production systems. It interfaces with CNC or PLC motion modules to execute precise RPM profiles, helping maintain consistent cutting conditions in metalworking centers and other process lines where stable spindle operation supports surface finish and tool life.

The unit uses a rated connection of 3 x AC 400 V, 50-60 Hz, so it can connect directly to common factory mains. Its continuous output capability reaches 200 A, allowing it to drive large-frame induction or synchronous spindle motors without derating. To keep semiconductor temperatures within limits, airflow is provided by a built-in internal blower, eliminating the need for external cabinet ducting. All command and diagnostic signals reach the controller through the X4 25-pole terminal block, and rotational demand values arrive as a 16-bit parallel digital speed word that the control electronics convert to a proportional output frequency.

The power section is equipped with an additional bleeder, so surplus regenerative energy is dissipated locally instead of returning to the DC bus. The product is an AC main spindle drive controller in Series 2 with Design Revision 3, and it is ordered without an additional encoder input. In this configuration, feedback is taken from the primary spindle sensor through the standard drive channel, which suits machine layouts that do not require a separate auxiliary encoder path. This arrangement keeps the feedback path straightforward while matching the braking and control functions used by the selected spindle system.