TDA 1.3-100-3-LP0 Bosch Rexroth Indramat
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MPN: R911261833
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The Bosch Rexroth Indramat TDA 1.3-100-3-LP0 is part of the TDA Main Spindle Controllers series and supports SERCOS speed command interface. This controller has a current rating of 100 A and a continuous current of 70 A, with air cooling inside the control cabinet. It features an additional encoder input for spindle feedback or a second motor and weighs 10.5 kilograms.
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Product Description:
The TDA 1.3-100-3-LP0 is a main spindle controller manufactured by Bosch Rexroth Indramat for the TDA Main Spindle Controllers series. The device supplies regulated DC link power and closed-loop speed commands to high-speed machine-tool spindles, and it can process a secondary encoder signal for spindle feedback or a second motor when dual-channel positioning is required. Integrated monitoring of phase currents and cabinet airflow supports reliable spindle operation in automated milling, drilling, and turning centers. This layout allows the controller to support both spindle regulation and related motion functions within the same machine platform.
The power section is rated for a peak line current of 100 A, while the converter can sustain a continuous output of 70 A during prolonged cutting cycles without derating. A DC link potential of 300 V stabilizes the intermediate circuit and sets the maximum spindle voltage the drive can deliver. Diagnostic functions rely on a 15 V test rail that draws only 160 mA, allowing safe signal verification with minimal load on the auxiliary supply. Velocity and position commands reach the controller through the SERCOS fiber-optic interface, ensuring deterministic communication with numerically controlled axes. Internally, heat is removed by air drawn through the control cabinet, so external ducting is not necessary if the enclosure ventilation provides adequate airflow.
The housing weighs 10.5 kg, which should be considered when mounting the unit vertically on standard 19-inch panels. Its enclosure carries an IP10 rating, giving basic protection against accidental contact while relying on the cabinet for environmental sealing. Full current capability is maintained up to an installation altitude of 1000 m, and operation is permitted until the ambient air reaches +55 °C, after which the output current must be reduced. Because the enclosure offers only basic touch protection, the controller is intended for installation inside a protected electrical cabinet, and humidity should remain below the specified 70 percent during the wettest month to help prevent condensation on live parts.
