Product Description:

The TDA 1.3-100-3-DP0 spindle controller is manufactured by Bosch Rexroth Indramat and belongs to the TDA Main Spindle Controllers series. It functions as the closed-loop power interface between a machine-tool drive and its CNC, regulating the torque and speed of a main spindle motor for turning, milling, or grinding tasks. By converting digital speed references into three-phase output and processing high-resolution encoder data, the unit maintains constant surface speed and accurate angular positioning during demanding industrial automation cycles.

The power stage supplies a continuous effective current of 70 A, giving headroom for rapid spindle acceleration. During self-test, the ±15 V logic rail draws 160 mA, and external sensors are supported by a 24 V auxiliary line that can deliver 1.4 A. The inverter connects to a DC link rated at 300 V, so the related bus components must match that energy level. Speed references arrive through a 16-bit parallel command port, while actual position is returned by the encoder input that accepts spindle or second-motor feedback signals. Cabinet airflow handles losses because the cooling method uses air inside the control cabinet. Operation is permitted up to 1000 m altitude in Humidity Class F environments.

Axis precision is supported by a positioning resolution of 1/4,000,000 rev, and the internal evaluator tracks rotor position to 1/2,000,000 rev for smooth vector control at low speed. The drive runs continuously at ambient temperatures up to +55 °C, and its housing carries an IP10 protection rating, so it must be installed inside an enclosed electrical cabinet. Storage limits range from -30 °C to +85 °C, which helps protect the unit during transport and inactive periods. At 10.5 kg, the unit remains manageable for panel mounting and still helps damp vibration during machine operation.