KDA 2.1-100-3-LPS-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-LPS-W1 is a spindle drive in the KDA Spindle Drives series with a rated current of 100 Amps and operates with a DC supply voltage of 300 VDC. It features a forced cooling system using a mounted heatsink blower powered by a 220V AC source, and includes a SERCOS interface for speed command value as well as a serial (RS 232 C) interface.
Internal Product Review
The KDA 2.1-100-3-LPS-W1 spindle drive from Bosch Rexroth Indramat features a rated current of 100 A and utilizes a 300 VDC supply voltage, making it suitable for demanding spindle applications. The integrated mounted heatsink blower with forced cooling ensures efficient thermal management even at ambient temperatures up to 45°C. The inclusion of a serial RS 232 C interface and a second encoder input highlights its versatility in modern CNC systems.
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Product Description:
The KDA 2.1-100-3-LPS-W1 spindle drive is manufactured by Bosch Rexroth Indramat for the KDA Spindle Drives series. Designed for machine tools and similar equipment, the unit functions as a power inverter that regulates three-phase spindle currents in response to motion commands. By combining power electronics, sensor interfaces, and dedicated cooling hardware, the drive supports precise speed regulation and real-time torque control for closed-loop industrial automation that requires high rotational accuracy and rapid acceleration.
It draws energy from a regulated bus of 300 VDC, converting that supply into sinusoidal output while sustaining up to 100 A of continuous motor current. A dedicated input line rated at 220 V/50-60 Hz is reserved for the cooling circuit so airflow is maintained during safe-off conditions. Configuration data and status words are exchanged over an RS-232-C maintenance port, while velocity and position setpoints are transmitted through the SERCOS interface integrated on the control board. A second encoder socket is also provided so the unit can accept spindle position feedback or supplementary motor feedback when multi-axis synchronization is required.
Effective temperature management is achieved through a mounted heatsink blower, and the drive relies on forced cooling to keep semiconductor junctions below critical limits during prolonged high-speed machining. Proper operation is specified for ambient temperatures from 5 to 45 °C and for installation sites up to 1000 m above sea level. If those limits are exceeded, derating may be necessary to maintain current capacity and thermal stability. The cooling system supports steady spindle operation during sustained high-load duty, and the power stage remains suitable for applications that require responsive control over changing speed and torque demands.
