KDA 2.1-150-3-LQI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-150-3-LQI-W1 is part of the KDA Spindle Drives series and is classified as a spindle drive. It features a rated current of 150 Amps and operates with a 300 VDC supply voltage. The unit uses a mounted heatsink blower with forced cooling and supports a maximum installation elevation of 1000 meters above sea level.
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Product Description:
The KDA 2.1-150-3-LQI-W1 spindle drive is produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Designed for high-power machining centers and other CNC equipment, it converts the regulated DC bus from an Indramat supply module into adjustable three-phase output for a spindle motor. By coordinating speed and torque, the unit supports metal-cutting or grinding operations where precise spindle regulation affects surface finish and cycle time. Its closed-loop design pairs with Indramat servo controllers so spindle speed follows programmed setpoints down to zero without cogging.
The drive’s power path is sized for a continuous armature current of 150 A, allowing it to energize large asynchronous or synchronous spindle motors. It draws energy from a common DC link at 300 VDC, so it must be used with compatible supply units rather than line-connected rectifiers. Thermal management relies on forced cooling, and the internal controller energizes a heat sink blower fed from 220 V/50-60 Hz to maintain semiconductor junction temperatures. Speed references arrive digitally through the SERCOS interface, and the version 2 platform expands parameter memory for large tool-change or positioning tables.
The unit operates in rooms kept between 5 to 45 °C, and elevation must not exceed 1000 m above sea level to avoid derating. For tacholess applications, an incremental encoder output passes real-time spindle position to the CNC, eliminating auxiliary converters. The blower is attached to the finned body as a mounted heat sink blower, which channels air directly across the IGBT stack and keeps acoustic noise localized to the drive enclosure. Wake Industrial offers a one-year warranty on this KDA product. International shipping options can be arranged for this product.
Frequently Asked Questions about KDA 2.1-150-3-LQI-W1:
Q: What is the rated current for the KDA 2.1-150-3-LQI-W1 spindle drive?
A: The KDA 2.1-150-3-LQI-W1 operates with a rated current of 150 A, providing strong current capacity suitable for demanding spindle applications.
Q: How is the KDA 2.1-150-3-LQI-W1 spindle drive cooled?
A: This spindle drive uses a forced cooling method via a mounted heatsink blower to ensure reliable performance during operation.
Q: What DC supply voltage is required for the KDA 2.1-150-3-LQI-W1 spindle drive?
A: The KDA 2.1-150-3-LQI-W1 accepts a DC supply voltage of 300 VDC for its main power input.
Q: Which interface is used for the speed command on the KDA 2.1-150-3-LQI-W1?
A: Speed command values for this model are managed via the SERCOS interface, enabling digital control integration.
Q: What is the maximum installation elevation for the KDA 2.1-150-3-LQI-W1 spindle drive?
A: The KDA 2.1-150-3-LQI-W1 can be installed at elevations up to 1000 meters above sea level.
