Product Description:

The TDA 1.1-050-3-L00 is a main spindle controller manufactured by Bosch Rexroth Indramat and assigned to the TDA Main Spindle Controllers series. In an automation cell, it links spindle drives to the motion control system through the SERCOS fiber-optic command interface, delivering regulated power and status feedback so the machining process can maintain accurate speed and torque profiles. This arrangement supports stable spindle operation during speed changes, load variation, and other machining demands.

This unit supplies a maximum output of 50 A, while its thermal design supports a continuous current of 35 A, allowing the connected motor to run steadily without exceeding temperature limits. A stabilized DC link at 300 VDC stores energy for rapid spindle acceleration, and a dedicated blower that operates from 220 VAC forces cabinet air across the heat sink to remove heat. Control electronics draw only 1.2 A from the 24 V auxiliary supply, which helps reduce loading on the machine control power bus. No additional encoder or supplemental communication ports are provided, so integration relies only on the embedded SERCOS channel. The controller must be wired to protective earth with a 10 mm² conductor, and its air-inside-cabinet cooling method requires unobstructed airflow paths.

Diagnostic measurements use a ±15 V rail that imposes a test current of 160 mA, a low level that limits stress on sensitive circuits during diagnostic checks. The housing weighs 10.5 kg, which allows straightforward handling during installation in the prescribed vertical orientation. An enclosure rating of IP 10 provides finger protection but no defense against dust, so the unit must be installed in a sealed cabinet. Operation is permitted up to 1000 m above sea level to maintain cooling performance within normal limits. Motor leads can be clamped to the output terminals with 5 Nm of torque, which helps maintain a secure electrical connection without damaging the conductors.