Product Description:

The TDA 1.3-050-3-D00 is a main spindle controller manufactured by Bosch Rexroth Indramat within the TDA Main Spindle Controllers series. Installed inside a machine-tool control cabinet, the unit supplies regulated armature power and feedback processing for high-speed spindle motors, allowing closed-loop speed control that aligns with CNC setpoints. By converting the drive’s DC link energy into precisely metered three-phase outputs, it forms the core interface between a numerical controller and the electromechanical spindle, helping maintain surface finish quality and tool life in automated machining lines.

The power channel of this controller is rated for 50 A, while it can sustain a continuous motor current of 35 A under normal duty. Internal bus capacitors operate from a stabilized link voltage of 300 VDC, providing energy storage for acceleration spikes and regenerative events. Drive commands arrive through a digital 16-bit parallel interface, so speed resolution matches finely stepped CNC profiles without analog drift. A control-logic draw of 1.2 A at the system low-voltage rail and a ±15 V test load of 160 mA support encoder diagnostics and gating electronics. No auxiliary encoder or fieldbus options are fitted, which simplifies wiring when only the primary spindle feedback loop is required.

The controller runs in ambient air from +5 to +45 °C and can be mounted up to 1000 m above sea level without current derating. Cooling is provided by air inside the control cabinet, so cabinet airflow must carry dissipated heat away from neighboring drives. An enclosure classification of IP 10 limits the unit to clean, dry electrical rooms, and the vertical mounting orientation promotes chimney-style convection across the heat sink. The unit has a mass of 10.5 kg, which should be considered when planning rail or back-panel support.