KDA 3.2-100-3-DQI-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-DQI-U1 is a spindle drive from the KDA Spindle Drives series. It operates with a rated current of 100 Amps and uses a forced cooling system with a mounted heatsink blower, requiring a 115V AC source. The drive is designed for 300 VDC supply voltage and can function within ambient temperatures from 5 to 45 degrees Celsius at elevations up to 1000 meters.
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Product Description:
The KDA 3.2-100-3-DQI-U1 is a spindle drive unit engineered by Bosch Rexroth Indramat and positioned within the KDA Spindle Drives series. It acts as a closed-loop power stage between a digital motion controller and a high-speed motorized spindle, converting command data into regulated armature current while supporting blower-assisted cooling. The drive also processes speed-related signals inside the same unit, which reduces the number of separate modules required in the cabinet. By combining power conversion, signal handling, and cooling support in one housing, it helps keep spindle subsystems compact. This arrangement suits automated machining centers where spindle speed must respond quickly during cutting, drilling, and tool-change sequences.
The power section uses a nominal DC bus voltage of 300 VDC and can deliver a continuous output of 100 A to the connected spindle motor. This current capacity supports demanding spindle acceleration and stable operation under sustained process loads. Velocity reference data arrive over a 16-bit digital parallel channel, allowing fine speed programming without the drift associated with analog interfaces. An internal fan is supplied from an auxiliary source rated at 115 V at 50/60 Hz, which keeps blower power separate from the main DC link. The heat sink operates with forced cooling, so airflow is driven across the thermal fins instead of relying on natural convection, helping maintain component temperature during rapid acceleration and high duty cycles.
The thermal assembly uses a mounted heat sink blower installed on the rear panel, which helps simplify cabinet layout and keeps the cooling package integrated with the drive. Position information can be forwarded to external control hardware through an incremental encoder output, enabling synchronous spindle orientation and tool alignment without an added transducer. This feedback path is useful when the machine requires a known spindle angle before clamping or tool exchange. The unit can be installed up to 1000 m above sea level without derating, and it operates in ambient temperatures from 5 to 45 degrees Celsius. The unit is series 3 and version 2, indicating its product revision within this drive line.
Frequently Asked Questions about KDA 3.2-100-3-DQI-U1:
Q: What type of cooling system does the KDA 3.2-100-3-DQI-U1 spindle drive use?
A: The KDA 3.2-100-3-DQI-U1 spindle drive uses a mounted heatsink blower for its cooling, employing forced cooling to maintain optimal temperatures.
Q: What is the rated current of the KDA 3.2-100-3-DQI-U1 spindle drive?
A: This drive has a rated current of 100 A, supporting demanding spindle motor applications.
Q: What type of speed command input does the KDA 3.2-100-3-DQI-U1 support?
A: The speed command for this drive is provided in a 16-bit parallel digital format.
Q: What is the acceptable operating temperature range for the KDA 3.2-100-3-DQI-U1?
A: Operation is supported at ambient temperatures from 5 to 45 degrees Celsius.
Q: What additional interface is provided on the KDA 3.2-100-3-DQI-U1 spindle drive?
A: The KDA 3.2-100-3-DQI-U1 includes an incremental encoder output as an additional interface.
