TDA 1.1-100-3-A0S Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911253522
Ask for AvailabilityThe TDA 1.1-100-3-A0S is a spindle controller manufactured by Bosch Rexroth Indramat and is part of the TDA Main Spindle Controllers series. It has a rated current of 100 Amps, a continuous current of 70 Amps, and operates with a DC link voltage of 300 VDC. The controller features an analog ±10 V command input, a serial RS-232C interface, and offers a positioning resolution of one part in 4,000,000 revolutions.
Internal Product Review
The TDA 1.1-100-3-A0S is a Bosch Rexroth Indramat main spindle controller with a 100 A rated current and an analog ±10 V command input. A 300 VDC DC link and 1/4,000,000 rev positioning resolution support stable spindle regulation and very fine motion accuracy. Vertical orientation and IP10 protection make the controller a strong choice for precision spindle applications.
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Product Description:
The TDA 1.1-100-3-A0S spindle controller is manufactured by Bosch Rexroth Indramat and belongs to the TDA Main Spindle Controllers series. Designed for CNC and general machining centers, the unit acts as the closed-loop interface between the numerical controller and the motorized spindle. It converts drive commands into regulated current and voltage so that the cutting tool can accelerate, decelerate, and hold speed accurately during automated production.
On the power side, the controller can deliver a continuous output of 70 A, while its short-time operating limit reaches 100 A. This allows the module to handle acceleration bursts without overheating. A shared DC bus supplies the unit with 300 VDC, and an internal converter shapes this energy into three-phase spindle currents. Speed or torque references arrive as a differential analog signal of ±10 V, allowing direct coupling with common motion cards. When the system is configured for positioning modes, the internal electronics resolve shaft feedback down to 1/4,000,000 of a revolution, supporting fine contour finishes and tapping cycles. An auxiliary 24 V rail draws only 1.4 A to power logic, keeping the control electronics isolated from the main power stage.
The housing carries an IP 10 rating and is intended for vertical mounting inside a protected cabinet. Reliable operation is supported from +5 °C to +45 °C, and output derating is accepted up to +55 °C. Altitude capability extends to 1,000 m above sea level before additional cooling is required, and standard RS-232C links provide parameter access for setup. For transport or warehouse storage, the unit tolerates -30 °C to +85 °C, and a factory verification routine draws a test current of 160 mA at ±15 V. The aluminum chassis weighs 10.5 kg, which helps keep cabinet layout manageable.
