TDA 1.1-100-3-D00 Bosch Rexroth Indramat
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MPN: R911252085
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The Bosch Rexroth Indramat TDA 1.1-100-3-D00 belongs to the TDA Main Spindle Controllers series and features a digital 16-bit parallel command value interface. It is rated for a continuous current of 70 A and a current rating of 100 A, with a DC link rated voltage of 300 VDC. Weighing 10.5 kg, the controller uses air cooling within a control cabinet and is protected with an IP10 rating.
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Product Description:
The TDA 1.1-100-3-D00 is a main spindle controller manufactured by Bosch Rexroth Indramat for the TDA Main Spindle Controllers series. It provides closed-loop current and speed regulation for machine-tool spindles, allowing the drive to follow high-resolution digital setpoints from upstream CNC or PLC hardware. By converting the controller’s DC link energy into three-phase output for the spindle motor, it supports applications that need stable torque across a broad speed range during cutting, drilling, or grinding operations.
The control electronics draw 160 mA from the ±15 V test supply, and the 24 V auxiliary circuit requires 1.4 A for internal relays and logic. Command values are accepted through a 16-bit parallel interface, so positioning boards can transfer precise velocity words without analog drift. This digital input method helps preserve command accuracy over longer cabinet wiring runs. During continuous operation, the power stage supplies 70 A, while its rated peak current is 100 A for short acceleration bursts. Energy is taken from a shared DC bus that remains at 300 VDC, giving sufficient margin for field-weakening speeds. Cooling air is pulled through the control cabinet, and the module’s IP10 housing assumes filtered enclosure air rather than direct shop-floor exposure. A 10 mm² protective earth conductor is required to clear fault currents, and there are no additional encoder or fieldbus interfaces, simplifying wiring and diagnostics.
The maximum ambient temperature is 45 °C; above that, the current must be derated up to a limit of 55 °C. Operation is supported up to 1000 m elevation before thermal headroom diminishes, and mean relative humidity is limited to 70% to help prevent condensation on live parts. The assembly weighs 10.5 kg, which eases cabinet mounting and provides thermal buffering during heavy spindle cycles.
