KDA 3.2-100-3-DQI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-DQI-W1 is a spindle drive from the KDA Spindle Drives series and features a rated current of 100 Amps. It uses a mounted heatsink blower for forced cooling and operates within an ambient temperature range of 5 to 45 degrees Celsius. The drive accepts a digital speed command value in 16 bit parallel form and includes an incremental encoder output interface.
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Product Description:
The KDA 3.2-100-3-DQI-W1 is a spindle drive produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. It converts a fixed DC link into controlled three-phase power so that high-speed spindle motors can accelerate, decelerate, and hold speed precisely during machining cycles and other automated processes. A rear-mounted heatsink blower is integrated into the unit. The blower has its own AC supply, so the cabinet does not need to share airflow with other equipment. This arrangement helps keep cooling for the power section separate from general enclosure ventilation during extended spindle operation.
The power stage operates from a DC bus of 300 VDC, which is the link voltage that the upstream rectifier or supply module must maintain for normal operation. Under continuous duty, the inverter can deliver 100 A of phase current, providing the torque needed for large-diameter tool spindles. The heatsink fan is energized by an auxiliary line of 220 V/50-60 Hz, keeping semiconductor temperatures within limits while the main drive remains on DC power. Speed reference data arrive as a 16-bit parallel digital word, allowing fine resolution when synchronizing with CNC commands or coordinating axes over a control bus. Thermal dissipation through the aluminum fin stack is enhanced by forced cooling, so airflow remains constant regardless of natural enclosure convection.
The allowable ambient range is 5 to 45 °C, allowing installation in typical shop-floor enclosures without supplemental heaters or chillers. Full current is available up to 1000 m above sea level before derating is required, which covers most standard industrial sites. For position or velocity feedback forwarding, an incremental encoder output is provided so downstream controllers can monitor actual spindle speed in real time. That feedback path can also be used by external control hardware for monitoring or coordinated motion functions. The drive is suitable for lathes, grinders, and multi-axis machining centers where close speed control and repeatable operation are required.
Frequently Asked Questions about KDA 3.2-100-3-DQI-W1:
Q: What is the rated current output of the KDA 3.2-100-3-DQI-W1 spindle drive?
A: The KDA 3.2-100-3-DQI-W1 spindle drive provides a rated current of 100 A for high-power spindle applications.
Q: What is the DC supply voltage required for the KDA 3.2-100-3-DQI-W1?
A: This model uses a 300 VDC supply voltage to operate effectively.
Q: What type of cooling system is used in the KDA 3.2-100-3-DQI-W1 spindle drive?
A: The KDA 3.2-100-3-DQI-W1 is equipped with a mounted heatsink blower and uses forced cooling.
Q: What extra interface is provided on the KDA 3.2-100-3-DQI-W1 spindle drive?
A: An incremental encoder output is available as an additional interface on this model.
Q: How is the speed command value entered into the KDA 3.2-100-3-DQI-W1 spindle drive?
A: The speed command value for this spindle drive is digital, utilizing a 16-bit parallel input.
