KDA 2.1-100-3-DPS-W1 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.
The Bosch Rexroth Indramat KDA 2.1-100-3-DPS-W1 spindle drive is part of the KDA Spindle Drives series and supports a rated current of 100 Amps with a DC supply voltage of 300 VDC. It uses a mounted heatsink blower with forced cooling and is designed to operate in ambient temperatures from 5 to 45 degrees Celsius. This drive includes a serial RS 232 C interface and a second encoder input for spindle or additional motor feedback.
Internal Product Review
The KDA 2.1-100-3-DPS-W1 spindle drive from Bosch Rexroth Indramat features a rated current of 100 A and operates with a 300 VDC supply voltage, making it ideal for demanding spindle applications. Its forced cooling system with a mounted heatsink blower ensures stable performance within ambient temperatures of 5 to 45°C. The inclusion of a serial RS 232 C interface and secondary encoder input highlights its flexible connectivity and precise feedback options.
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Product Description:
The KDA 2.1-100-3-DPS-W1 is a spindle drive produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. In an automation cell, it functions as the dedicated power and control stage for high-speed machining spindles, converting regulated DC link energy from the cabinet supply into three-phase motor current. Velocity setpoints arrive on a Digital 16-bit parallel channel, giving the controller fine resolution across the full speed range while supporting accurate spindle speed control. This arrangement suits machine tools such as milling, turning, and grinding equipment where commanded speed changes must be applied quickly and repeatably.
This unit operates from a DC link of 300 VDC and can deliver a continuous motor phase current of 100 A, allowing it to energize large-frame spindle motors without external boosters. The available current supports sustained spindle loading during cutting cycles while keeping the power stage within its intended operating range. Thermal loads are removed by an auxiliary fan supplied from 220 / 50-60 Hz, so blower power remains independent of the main DC bus. The drive uses forced cooling, which helps remove internal losses even when spindle speed is low and natural convection is insufficient. Hardware generation 2 identifies the internal logic platform and gate-drive circuitry used in this model.
For feedback and diagnostics, the drive provides a second encoder input, enabling simultaneous spindle position tracking or connection of a secondary motor encoder when the axis runs in tandem. A serial interface (RS 232 C) is present for parameter upload and fault monitoring from a host PC. Reliable operation is specified between 5 to 45 °C, and installation is approved up to 1000 m above sea level. Reduced air density above that elevation can lower heat sink performance, so additional derating or external cooling may be required.
