TDA 1.1-050-3-AP0

The TDA 1.1-050-3-AP0 controller from Bosch Rexroth Indramat is part of the TDA Main Spindle Controllers series, designed to digitally regulate the speed and power delivery of 2AD asynchronous and 1MD frameless main spindle motors. Featuring a 50 A rated current and a 35 A continuous effective current, this unit ensures consistent torque and constant power across a broad speed range. Weighing merely 10.5 kg, it integrates seamlessly into compact machine-tool architectures, serving as the primary interface for precise spindle speed control via an analog ±10 V command input.

Built for high-performance industrial automation, the TDA 1.1-050-3-AP0 boasts a ±10 V analog speed command interface coupled with a dedicated encoder input for spindle or secondary motor feedback, enabling accurate position-loop synchronization. The controller accepts a 300 VDC supply through L– and L+ terminals, delivering up to 35 A continuously while its power circuits are rated for 50 A peak operation. Additionally, it draws only 160 mA at ±15 V test voltage and 1.2 A at +24 V load voltage, minimizing auxiliary power demands and heat dissipation.

Engineered for reliability, this spindle controller operates optimally between +5 °C and +45 °C and can be stored or transported within –30 °C to +85 °C without degradation of rated data. Protected by an IP 10 enclosure rating, it must be mounted vertically with the earthing stud at the top to ensure proper thermal management and grounding. By combining robust current handling, precise analog control, and industrial-grade protection, the TDA 1.1-050-3-AP0 delivers enhanced spindle synchronization, reduced downtime, and reliable performance in demanding CNC and automated manufacturing environments.