Product Description:

The TDA 1.3-050-3-AP0 spindle controller is produced by Bosch Rexroth Indramat within the TDA Main Spindle Controllers series. Designed for machine-tool and production cell spindles, it supplies regulated three-phase power and accepts velocity commands from the host CNC. By closing the torque and speed loops inside the drive, the unit provides the high-bandwidth response required for real-time cutting, positioning, and tapping operations common to industrial automation lines.

This unit's maximum phase current is 50 A, while its continuous capability remains at 35 A. The higher figure represents the short-term envelope for acceleration bursts, while the lower figure sets the thermal steady-state limit. The speed command connector accepts a differential ±10 V analog command, allowing conventional PLCs to control spindle velocity without digital buses. Power for the drive section is drawn from a link circuit held at 300 V, so the supply arrangement must match that requirement. An additional encoder input marked for spindle feedback or a second motor permits parallel monitoring of an auxiliary axis or high-resolution spindle positioning. Internal cooling relies on air circulating inside the cabinet, and humidity resistance falls under class F for normal shop-floor operation.

The control circuits use a 24 V rail that can supply 1.2 A to auxiliaries, while the 15 V test source is limited to 160 mA for diagnostic checks. Field wiring terminates on a 37-way control I/O header, a 9-pin speed interface, and a 15-pin motor-feedback socket, which helps keep external connections organized. With a mass of 10.5 kg, the housing fits standard sub-panel brackets and has an IP10 ingress rating that is intended for sealed cabinets. Operation is permitted up to 55 °C ambient temperature and 1,000 m elevation; beyond these limits, derating applies.