Product Description:

The TDA 1.3-100-3-L00 is a main spindle controller produced by Bosch Rexroth Indramat within the TDA Main Spindle Controllers series. It governs the torque, speed, and position of high-power spindle motors used in machining centers and other automated equipment, converting digital motion commands into regulated three-phase output for the attached drive. By interfacing directly with the machine control system, it supports precise spindle orientation during tool changes and reliable speed regulation during cutting operations. This operating role makes the unit suitable for applications in which the spindle must respond quickly to changing load conditions while maintaining stable motion.

This unit delivers a rated output of 100 A while sustaining continuous operation at 70 A, allowing the spindle to handle prolonged loading without thermal overload. A link circuit of 300 VDC supplies the power section, and the internal test circuitry uses separate support rails for diagnostic functions and control operation. The 24 V logic supply energizes relays and the control electronics, separating low-level control tasks from the power stage. Command data arrive over the SERCOS Interface, which supports digital communication with the higher-level control system and avoids the signal drift associated with analog command paths. No additional encoder or auxiliary interface is fitted, which keeps the connection layout straightforward. Once a command is issued, the drive can resolve position changes down to 1/4,000,000 rev, supporting accurate spindle coordination during threading, contouring, and orientation moves.

The controller carries a protection rating of IP10, so it must be mounted in a dust-protected enclosure with forced airflow. It operates between 5 °C and 45 °C, and storage is permissible from −30 °C to 85 °C when the unit is not in use. Installation elevations are limited to 1000 m before output derating becomes necessary, so panel placement should account for site altitude. At 10.5 kg, the device places a moderate static load on mounting hardware while remaining manageable during installation or removal. The enclosure and thermal requirements make cabinet ventilation and clean internal air especially important for stable long-term operation.