KDA 2.1-150-3-DYI-U1 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 2.1-150-3-DYI-U1 is a spindle drive from the KDA Spindle Drives series with a rated current of 150 Amps and operates with a DC supply voltage of 300 VDC. It features forced cooling using a mounted heatsink blower that runs on a 115V, 50-60Hz AC source. The drive supports a 16-bit parallel digital speed command and includes incremental encoder output with a second encoder and synchronous input.
Internal Product Review
The KDA 2.1-150-3-DYI-U1 spindle drive from Bosch Rexroth Indramat delivers excellent performance with a rated current of 150 A and a DC supply voltage of 300 VDC. Equipped with a mounted heatsink blower for forced cooling, the unit maintains steady operation within ambient temperatures of 5 to 45°C. Incremental encoder output and second encoder input options make this spindle drive especially suitable for precision-driven applications.
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Product Description:
The KDA 2.1-150-3-DYI-U1 belongs to the Bosch Rexroth Indramat KDA Spindle Drives series and is a Series 2 unit. As a spindle drive, it supplies controlled three-phase power to high-speed motorized spindles used in machining centers and similar automation platforms. A mounted heat sink blower is integrated for temperature control, and the product accepts the 300 VDC link voltage delivered by compatible Indramat power supplies while forwarding real-time feedback from one or two position encoders to the machine controller.
The drive draws its main bus from 300 VDC and can deliver up to 150 A of continuous motor current so that large spindle motors can accelerate quickly to their programmed velocity. Thermal energy is removed through forced cooling, and the attached blower is powered from an auxiliary source rated at 115 V/50-60 Hz. Rotor speed is commanded through a parallel data word, and the unit interprets a 16-bit parallel digital command and converts it into a precise current profile. Generation 2 hardware adds tighter current regulation and reduced switching losses compared with earlier KDA units, maintaining stable torque even during rapid load changes.
The environmental envelope permits operation from 5 to 45 °C and installation up to 1000 m above sea level without derating, supporting shop-floor mounting close to the spindle. Real-time position information is available through the built-in incremental encoder output, and an additional channel that accepts a second encoder input and synchronous input allows dual-loop control for higher accuracy on large axes. The blower assembly is a mounted heat sink type, ensuring airflow stays localized to the power semiconductors and minimizing cabinet heat. The digital command input and encoder channels support coordinated spindle positioning in CNC systems.
