KDA 3.2-050-3-LQI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-050-3-LQI-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and a DC supply voltage of 300 Volts. It features forced cooling using a mounted heatsink blower and supports speed command values via a SERCOS interface. The drive operates in ambient temperatures from 5 to 45 degrees Celsius and can be installed up to 1000 meters above sea level.
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Product Description:
The KDA 3.2-050-3-LQI-W1 is a spindle drive produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. It is installed in multi-axis machining centers and turning equipment to regulate high-speed motor spindles. The unit converts a regulated 300 VDC bus into three-phase output while coordinating velocity data through a SERCOS fieldbus for precise metal-cutting operations.
The inverter stage is designed for a continuous output of 50 A, so connected spindle motors can draw substantial current without derating during heavy removal passes. Its internal power section operates from a regulated link of 300 VDC that originates from a shared supply module, giving consistent dynamic headroom for acceleration and deceleration. Cooling is provided by a drive-mounted blower that is energized from an auxiliary line of 220 V/50-60 Hz, so heat sink airflow remains independent of spindle speed during low-rpm machining. This air stream uses forced cooling, which helps keep the IGBTs within their temperature limits in enclosed cabinets. Motion commands arrive through a SERCOS interface, allowing synchronized speed loops alongside other axes on the fiber-optic ring. An incremental encoder output is available as a non-isolated differential pair so external controllers can receive real-time position feedback without additional converters.
A mounted heat sink blower pulls air directly across the fin pack, making the drive usable in ambient temperatures from 5 to 45 degrees Celsius without external ducting. Operation is permitted up to 1000 m above sea level, and higher altitudes reduce cooling effectiveness and require current derating. The auxiliary feedback path is provided as an incremental encoder output, which supports fine speed trimming if the primary SERCOS loop is unavailable. The drive is Series 3 and Version 2.
Frequently Asked Questions about KDA 3.2-050-3-LQI-W1:
Q: What is the rated current for the KDA 3.2-050-3-LQI-W1 spindle drive?
A: The KDA 3.2-050-3-LQI-W1 spindle drive has a rated current of 50 A for demanding applications.
Q: What type of cooling is used in the KDA 3.2-050-3-LQI-W1 spindle drive?
A: The KDA 3.2-050-3-LQI-W1 uses a mounted heatsink blower for forced cooling, ensuring effective heat management.
Q: What communication interface does the KDA 3.2-050-3-LQI-W1 use for transmitting speed commands?
A: This model provides a SERCOS interface for speed command value communication.
Q: What is the required AC voltage for the heatsink blower on the KDA 3.2-050-3-LQI-W1?
A: The AC source required for the heatsink blower is 220V at 50-60Hz.
Q: What is the maximum installation elevation for the KDA 3.2-050-3-LQI-W1?
A: This drive can be installed at elevations up to 1000 meters above sea level.
