Product Description:

The TDA 1.1-100-3-A00/S001 is a main spindle controller produced by Bosch Rexroth Indramat as part of the TDA Main Spindle Controllers series. Designed for CNC and general machining centers, it regulates spindle speed and torque by converting DC-link power into controlled three-phase output for synchronous or asynchronous spindle motors. By linking the drive to the machine-tool control loop, the unit delivers the closed-loop velocity accuracy required for cutting, drilling, and grinding operations in industrial automation.

The unit is rated for a peak output of 100 A and a continuous spindle phase current of 70 A, which supports drive sizing for high-inertia tools and extended duty cycles. Its internal bus operates at 300 VDC, allowing rapid torque changes without excessive ripple. The analog speed command accepts a symmetrical ±10 V analog reference, so legacy numerical controls can issue velocity setpoints directly. At the motor terminals, a tightening torque of 5 Nm secures conductors against vibration. Air is drawn through the enclosure and exhausted inside the cabinet, which simplifies ductwork, and reliable operation is maintained up to 1,000 m installation altitude.

Low-power auxiliaries include a 15 V test line that draws 160 mA for signal verification and a 24 V logic rail that supplies 1.4 A to contactors and sensors. Overall mass is 10.5 kg, allowing vertical mounting when the cabinet layout follows the specified orientation. The controller has an IP10 enclosure, so it must be installed in a sealed electrical cabinet where the ambient temperature does not exceed +45 °C and storage conditions remain below +85 °C. No additional encoder interface or supplementary fieldbus module is fitted, which reduces wiring complexity in applications that only require the analog reference.