KDA 2.1-100-3-AQ0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-100-3-AQ0-W1 is a spindle drive in the KDA Spindle Drives series, with a rated current of 100 Amps and powered by a 300 VDC supply voltage. It uses forced cooling with a mounted heatsink blower that operates at 220V, 50-60Hz, and is designed to function within ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 2.1-100-3-AQ0-W1 is a spindle drive produced by Bosch Rexroth Indramat and assigned to the KDA Spindle Drives series. It serves as the power section of a servo spindle package, converting shared DC-bus energy in multi-axis machining centers into regulated three-phase output for precise torque and speed control. This operating role makes it suitable for high-frequency spindle applications used in metal cutting. Because it is intended for shared-bus systems, the drive works as part of a larger multi-axis platform rather than as a stand-alone mains-fed inverter. Its compact chassis supports cabinet mounting next to CNC inverter modules, allowing the drive to fit into coordinated axis stacks without extra cooling ducts.
For electrical operation, the module connects to a direct-current link of 300 VDC maintained by the supply unit on the same bus. The power stage is rated for 100 A, so the drive can energize large induction or synchronous spindle motors during acceleration and tool engagement. This current capability supports sustained spindle loading during demanding cutting cycles. Closed-loop velocity reference is provided as an analog ±10 V signal, which suits control systems that do not use fieldbus communication. It can also interface with older CNC command chains that still use voltage references. Internal losses are removed by forced cooling, and the blower receives power from a dedicated 220 V/50–60 Hz feed. This arrangement keeps thermal management separate from the DC link during rapid load changes.
Continuous duty is permitted from 5 to 45 °C, keeping the semiconductors within their operating range under typical plant conditions. Altitudes up to 1000 m above sea level require no current reduction, which supports installation in standard industrial locations. The unit is Series 2. Cooling air is supplied by a mounted heat sink blower, so external ductwork is not required. No additional interface option is installed, so auxiliary encoder or fieldbus expansion is not available. Cabinet airflow and installation location should stay within these operating limits.
Frequently Asked Questions about KDA 2.1-100-3-AQ0-W1:
Q: What is the rated current for the KDA 2.1-100-3-AQ0-W1 spindle drive?
A: The KDA 2.1-100-3-AQ0-W1 operates with a rated current of 100 A.
Q: What DC supply voltage does the KDA 2.1-100-3-AQ0-W1 require?
A: This spindle drive is designed to accept a DC supply voltage of 300 VDC.
Q: How is the KDA 2.1-100-3-AQ0-W1 spindle drive cooled?
A: Cooling is handled by a mounted heatsink blower using a forced cooling mode.
Q: What is the operational ambient temperature range for the KDA 2.1-100-3-AQ0-W1?
A: The allowed ambient temperature range for operation is 5 to 45 degrees Celsius.
Q: What type of speed command value does the KDA 2.1-100-3-AQ0-W1 use?
A: The spindle drive receives speed command values in analogue format.
