KDA 2.1-100-3-LYS-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 2.1-100-3-LYS-U1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 100 Amps and operates on a DC supply voltage of 300 VDC. This drive uses a mounted heatsink blower for forced cooling and includes a serial interface (RS 232 C) and SERCOS for speed command value.
Internal Product Review
The KDA 2.1-100-3-LYS-U1 spindle drive from Bosch Rexroth Indramat features a 100 A rated current and a forced cooling system with a mounted heatsink blower, ideal for demanding spindle applications. It includes a serial RS 232 C interface and supports a SERCOS speed command value, ensuring seamless integration into automation environments. This drive is particularly notable for its high current capability and reliable cooling performance.
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Product Description:
The KDA 2.1-100-3-LYS-U1 is a spindle drive module from Bosch Rexroth Indramat that belongs to the KDA Spindle Drives series. As a spindle drive, it supplies regulated three-phase power to machine-tool spindles, enabling rapid acceleration, constant surface speed control, and precise positioning in CNC machining centers and grinding lines. Built on the series 2 platform, it connects directly to the DC bus of an Indramat supply unit and supports motion-control loops that rely on real-time velocity and angle feedback. In machine tools, that control helps the spindle move smoothly between roughing passes, finishing passes, and orientation steps without losing response.
The drive delivers a continuous output of 100 A while drawing energy from a common bus rated at 300 VDC. This combination supports sustained spindle torque during demanding cutting duty and suits systems that use a shared DC bus architecture. A heatsink blower powered by 115 V 50–60 Hz mains cools the internal IGBT stack, and the thermal design uses forced cooling to maintain stable operation during extended machining cycles. Speed commands are accepted over a SERCOS interface, allowing deterministic communication with the machine controller and consistent response during high-speed contouring, spindle synchronization, and orientation control.
Environmental limits place the drive in workspaces kept between 5–45 °C, and it may be installed up to 1000 m above sea level without derating. Parameter loading and diagnostic readout are available through a RS-232-C service port for local setup and troubleshooting. The cooling assembly uses a mounted heatsink blower integrated on the rear panel, so enclosure layout only needs straight airflow channels rather than complex ducting. A secondary encoder input with synchronous-pulse capability supports spindle orientation for tool change and tapping cycles, and the built-in serial and SERCOS resources remove the need for add-on interface cards.
