KDA 2.1-100-3-AQS-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-100-3-AQS-U1 is a spindle drive from the KDA Spindle Drives series with a rated current of 100 Amps and a DC supply voltage of 300 VDC. It uses a mounted heatsink blower for forced cooling and operates between 5 to 45 degrees Celsius. The device includes a serial RS 232 C interface and supports analogue speed command values.
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Product Description:
The KDA 2.1-100-3-AQS-U1 spindle drive is produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Designed for machine-tool and production spindles, it converts a regulated DC bus into variable three-phase output so that motor speed and torque follow commands from a CNC or PLC. Embedded power electronics, signal conditioning, and dedicated cooling support the rapid acceleration profiles required in drilling, milling, and grinding stations on automated lines. This operating behavior helps the spindle respond quickly to changing load conditions during demanding machining cycles.
The control section draws its operating energy from a common DC link at 300 VDC, while the power stage can deliver up to 100 A of continuous phase current to the spindle windings. Thermal stress from that output is removed by a mounted heat sink blower, and the blower itself is supplied from a separate 115 V/50-60 Hz AC branch so it remains operational during DC bus disturbances. The drive uses forced cooling, so internal airflow moves heat directly across the fin pack and away from the power components. Parameter adjustment and diagnostic capture are handled through a serial interface (RS-232C), allowing external devices to monitor voltage, current, and fault codes without opening the enclosure.
In typical installations, the unit accepts a speed reference generated as an analog voltage, letting legacy CNC systems feed proportional commands without digital fieldbus adapters. Reliable operation is permitted between 5 to 45 °C, so enclosure climate control is usually only needed in hotter plant areas. The drive can be used up to 1000 m above sea level without altitude compensation. This input method allows straightforward integration with control platforms that use conventional voltage-based spindle commands.
Frequently Asked Questions about KDA 2.1-100-3-AQS-U1:
Q: What is the rated current for the KDA 2.1-100-3-AQS-U1 spindle drive?
A: The KDA 2.1-100-3-AQS-U1 spindle drive supports a rated current of 100 A.
Q: What are the AC source requirements for the heatsink blower of the KDA 2.1-100-3-AQS-U1?
A: This model requires a 115V AC source at 50-60Hz to power the heatsink blower.
Q: What type of cooling system does the KDA 2.1-100-3-AQS-U1 spindle drive use?
A: A mounted heatsink blower is used to provide forced cooling for this drive.
Q: What is the operating temperature range for the KDA 2.1-100-3-AQS-U1 spindle drive?
A: The KDA 2.1-100-3-AQS-U1 can operate within ambient temperatures ranging from 5 to 45 degrees Celsius.
Q: What additional interface is available on the KDA 2.1-100-3-AQS-U1 spindle drive?
A: This spindle drive features an additional serial interface using RS 232 C.
