KDA 2.1-100-3-D0I-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-100-3-D0I-W1 is a spindle drive from the KDA Spindle Drives series, featuring forced cooling by a mounted heatsink blower powered by a 220V AC source. It supports a rated current of 100 Amps, operates on a 300 VDC supply voltage, and accepts digital speed command values with 16-bit parallel input. The drive operates within an ambient temperature range of 5 to 45 degrees Celsius and includes an incremental encoder output.
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Product Description:
The KDA 2.1-100-3-D0I-W1 is a spindle drive module produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. This unit converts constant DC link power into a regulated three-phase output for machine-tool spindles, providing the torque and speed control necessary for automated milling, grinding, or boring operations. By coordinating with the motion controller and motor feedback, it supports rapid changes in setpoints while maintaining the accuracy required for industrial metal-cutting applications. It is intended for installations where spindle response and repeatable speed behavior affect process stability during machining.
A rated output current of 100 A permits the module to energize large-frame AC spindle motors without saturating the internal power electronics. It receives its intermediate circuit through a 300 VDC supply, so the cabinet must route that constant voltage from the common rectifier. Thermal management relies on forced cooling, delivered by a mounted heat sink blower that removes heat directly from the power stage. That blower is powered by an auxiliary line of 220 V/50-60 Hz, which reduces loading on the DC bus during aggressive acceleration profiles. This cooling arrangement supports continuous operation where spindle demand changes quickly and the power devices must dissipate repeated thermal peaks.
Allowable ambient conditions range from 5 to 45 degrees Celsius, and operation remains without derating up to 1000 m above sea level. Command references enter through a 16-bit digital parallel interface, enabling the CNC to load velocity words with very low latency during spindle control. Feedback to auxiliary controllers is available through an incremental encoder output for synchronous spindle orientation or tool-change alignment. This interface structure supports coordinated motion between the spindle and other machine axes during tapping, indexing, or positioning sequences. The available feedback path also helps external control functions monitor rotational behavior while the main controller manages closed-loop speed regulation.
Frequently Asked Questions about KDA 2.1-100-3-D0I-W1:
Q: What is the rated current of the KDA 2.1-100-3-D0I-W1 spindle drive?
A: The KDA 2.1-100-3-D0I-W1 spindle drive features a rated current capacity of 100 A.
Q: How is the KDA 2.1-100-3-D0I-W1 spindle drive cooled?
A: This model uses a mounted heatsink blower and operates with forced cooling for efficient temperature regulation.
Q: What is the required DC supply voltage for the KDA 2.1-100-3-D0I-W1?
A: The spindle drive accepts a DC supply voltage of 300 VDC during operation.
Q: What type of speed command input does the KDA 2.1-100-3-D0I-W1 support?
A: A digital 16-bit parallel interface is used for speed command input on this spindle drive.
Q: What AC power is required for the heatsink blower on the KDA 2.1-100-3-D0I-W1?
A: The AC source for the heatsink blower is rated at 220V with a frequency range of 50-60Hz.
