KDA 3.1-150-3-DQ0-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-DQ0-U1 is part of the KDA Spindle Drives series and is designed as a spindle drive with a rated current of 150 Amps. It features a forced cooling system with a mounted heatsink blower operating at 115V, 50-60Hz. The drive accepts a DC supply voltage of 300 VDC and works in ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.1-150-3-DQ0-U1 is a modular drive unit produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. Classified as a spindle drive, it links directly to a CNC or motion controller to regulate the speed and torque of high-speed cutting spindles in automated production cells. The electronics translate parallel digital speed commands into three-phase motor currents so that the machining process maintains consistent surface feed during drilling, milling, or grinding operations. This operating role suits machine tools that depend on repeatable spindle response and steady cutting performance during changing loads.
The drive’s nominal output stage is rated for 150 A and is supplied from a regulated DC link at 300 VDC. A separate heat sink fan operates on 115 V at 50/60 Hz so the power section can maintain safe junction temperatures during continuous duty. All velocity information enters the controller through a 16-bit parallel digital input, allowing fine speed trimming without analog drift. Thermal design supports operation in ambient air from 5 to 45 °C, and the Version 3 hardware uses component spacing suited to this temperature range. This arrangement supports stable current delivery when spindle load changes quickly during cutting cycles.
A forced cooling architecture expels heat through the aluminum fin array, and an integrated mounted heat sink blower eliminates the need for separate cabinet air movers. Installation is permitted up to 1000 m above sea level without output derating, which suits most industrial plant elevations. The drive uses a fixed interface arrangement, so no additional interface selection is required. It also uses unified diagnostics and bus connections with companion axes in the KDA Spindle Drives line. That common connection layout supports consistent integration in multi-drive spindle systems.
Frequently Asked Questions about KDA 3.1-150-3-DQ0-U1:
Q: What is the DC supply voltage required for the KDA 3.1-150-3-DQ0-U1?
A: The KDA 3.1-150-3-DQ0-U1 spindle drive operates with a DC supply voltage of 300 VDC.
Q: How is the KDA 3.1-150-3-DQ0-U1 spindle drive cooled?
A: This model features a mounted heatsink blower and uses forced cooling to maintain optimal operating temperatures.
Q: What is the rated current for the KDA 3.1-150-3-DQ0-U1 spindle drive?
A: The KDA 3.1-150-3-DQ0-U1 is rated for a current of 150 A, making it suitable for demanding drive applications.
Q: What type of speed command input does the KDA 3.1-150-3-DQ0-U1 accept?
A: Speed commands for this spindle drive are accepted in digital format through a 16-bit parallel interface.
Q: What is the ambient temperature range for operating the KDA 3.1-150-3-DQ0-U1?
A: The KDA 3.1-150-3-DQ0-U1 is designed to operate within ambient temperatures of 5 to 45 degrees Celsius.
