Product Description:

The TDA1.3-100-3-L00 spindle controller is produced by Bosch Rexroth Indramat and belongs to the TDA Main Spindle Controllers series. Designed for CNC and general machining centers, it regulates stator current and the velocity loop of high-inertia main spindles so the drive system can deliver precise speed changes commanded over the integrated real-time network. It serves as the interface between power electronics and motion control within the machine tool. This arrangement supports stable spindle response during acceleration, deceleration, and changes in cutting load.

It is engineered for demanding duty cycles with a rated output of 100 A, while its thermal design allows a continuous effective current of 70 A without derating. The internal DC bus operates at 300 VDC, drawing auxiliary power through a control supply that requires 1.4 A at 24 V and a diagnostic rail that accepts 160 mA at ±15 V. These separate low-voltage inputs support the control electronics and status functions without adding external interface modules. Because the speed command arrives exclusively through the SERCOS interface, no additional auxiliary communication slots are required. Cooling air is circulated inside the control cabinet to reduce exposure to external contamination, and vertical mounting helps maintain proper airflow.

The enclosure carries an ingress rating of IP10, weighs 10.5 kg, and stands 390 mm tall, so cabinet layout must account for both its size and its installed mass. Safe operation is permitted at ambient temperatures up to 55 °C and elevations up to 1000 m; above those limits, current derating or external cooling is required. The open enclosure rating means the unit is intended for installation inside a protected cabinet rather than in exposed machine locations. With no optional encoder or interface boards, installation is straightforward once the fiber link and power cables are terminated, and internal convection should remain unobstructed.