Product Description:

The RAC 2.3-200-460-A00-W1 is an AC main spindle drive controller produced by Bosch Rexroth Indramat and included in the RAC Spindle Drive Controllers series. It receives analog speed commands from upstream CNC or PLC equipment and regulates three-phase motor power for spindle operation in machine tools, forming systems, and packaging equipment. The unit combines gating electronics, high-current power semiconductors, and monitored cooling in one housing, so it can support continuous operation while maintaining stable response during changing spindle loads. Its role is to convert incoming control signals into controlled motor output for applications that depend on accurate speed regulation.

Its power section accepts a three-phase industrial supply of 400 V AC at 50 Hz ±15% or 460 V AC, making the controller suitable for more than one common plant power system. The drive can deliver up to 200 A to the spindle motor, so the connected motor circuit must be matched to that current capability. Heat is removed by a built-in fan, which moves cabinet air through the heat sink to help manage semiconductor temperature during extended duty. Spindle speed is commanded through an analog interface of ±10 V, allowing direct connection to standard motion-control hardware. Field control wiring is connected through X4 with 9 poles, which provides terminals for enable, fault, and monitoring signals used by the surrounding control system.

The product is in Series 2 and Version 3. It is supplied without an additional bleeder resistor, so regenerative energy must be absorbed by the spindle load or by an external resistor module when required by the application. The controller also comes without an additional encoder input, so systems that need secondary feedback must use a separate external module. This arrangement fits standard velocity-controlled spindle applications that use one primary feedback path and do not require extra onboard braking support.