KDA 3.1-100-3-AQ0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-100-3-AQ0-W1 is a spindle drive from the KDA Spindle Drives series and operates with a rated current of 100 Amps. It uses a forced cooling system provided by a mounted heatsink blower with an AC source of 220V at 50-60Hz. The drive supports a DC supply voltage of 300 VDC and is designed for installations up to 1000 meters above sea level in ambient temperatures between 5 and 45 degrees Celsius.
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Product Description:
The KDA 3.1-100-3-AQ0-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. It is intended to regulate the torque and speed of high-frequency machine-tool spindles by converting a constant DC bus into three-phase output that follows a velocity reference. In automated machining centers, the unit forms the link between the main supply module and the feedback-equipped motor, providing closed-loop control that supports rapid acceleration, controlled braking, and precise surface finishes.
Internally, the drive is powered from a DC link of 300 VDC, allowing its transistor bridge to deliver a continuous phase current of 100 A to the connected spindle motor. Thermal stress from this output is removed by a mounted heat sink blower; the blower is fed from an auxiliary supply of 220 V/50–60 Hz. Airflow is directed through fins in a forced cooling mode, so the device can sustain rated current even when mounted in tight electrical enclosures. Velocity control is executed from an external control system that provides an analog speed command voltage. With this interface, the spindle drive modulates the inverter switching pattern proportionally to the reference, enabling smooth ramp profiles and compatibility with standard numerical control cards. The series identifier 3 indicates the drive revision used in this hardware release.
The drive is intended for shop-floor installation. Reliable operation is specified from 5 to 45 °C, and performance remains unchanged at elevations up to 1000 m above sea level because the cooling system maintains airflow density within this range. There is no additional interface option, which simplifies cabinet layout by reducing unused connectors and limits control functions to the core motion tasks. Operation outside the stated thermal or altitude limits requires derating or supplementary ventilation to preserve component life and maintain current-handling capability.
Frequently Asked Questions about KDA 3.1-100-3-AQ0-W1:
Q: What is the rated current for the KDA 3.1-100-3-AQ0-W1 spindle drive?
A: The KDA 3.1-100-3-AQ0-W1 spindle drive operates with a rated current of 100 A.
Q: What cooling method does the KDA 3.1-100-3-AQ0-W1 spindle drive utilize?
A: This model uses a mounted heatsink blower for forced cooling to maintain proper temperature during operation.
Q: What DC supply voltage is supported by the KDA 3.1-100-3-AQ0-W1 spindle drive?
A: The KDA 3.1-100-3-AQ0-W1 supports a DC supply voltage of 300 VDC.
Q: What AC source is required for the heatsink blower of the KDA 3.1-100-3-AQ0-W1 spindle drive?
A: The AC power source required for the heatsink blower is 220V at 50-60Hz.
Q: What is the maximum installation elevation for the KDA 3.1-100-3-AQ0-W1 spindle drive?
A: This spindle drive can be installed at elevations up to 1000 meters above sea level.
