KDA 2.1-100-3-DP0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-100-3-DP0-W1 is a spindle drive with a rated current of 100 Amps and a DC supply voltage of 300 VDC. As part of the KDA Spindle Drives series, it uses a mounted heatsink blower for forced cooling and operates within an ambient temperature range of 5 to 45 degrees Celsius. This drive accepts digital speed command values and includes a second encoder input for spindle or additional motor feedback.
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Product Description:
The KDA 2.1-100-3-DP0-W1 belongs to the KDA Spindle Drives series produced by Bosch Rexroth Indramat. This spindle drive serves as the power stage for machine-tool spindles, converting DC bus energy into controlled output so that rotation, acceleration, and positioning stay coordinated with a CNC or PLC. By combining power electronics, feedback handling, and dedicated thermal management in one unit, it supports demanding machining and grinding processes in automated production equipment. The drive is suited for applications where spindle speed must remain stable during changing cutting loads and where controlled orientation is needed for indexing tasks.
The drive draws its intermediate supply from a 300 VDC bus and can provide up to 100 A of continuous armature current, allowing rapid torque buildup at the motor shaft. Setpoints arrive through a digital 16-bit parallel channel, which supports fine speed control without the drift associated with analog signaling. Heat generated by the IGBTs is removed by a mounted heat sink blower, and the unit uses forced cooling to keep component temperature stable during prolonged heavy operation. The hardware also includes a second encoder connector that can accept spindle feedback or additional motor feedback, allowing the controller to process position and velocity data directly. This arrangement supports accurate speed correction during acceleration, deceleration, and load changes.
Operation depends on the installation environment and the available utility connections. The heat sink fan is powered from a separate 220 V/50-60 Hz mains source, which keeps the blower load separate from the DC link during drive operation. The surrounding air should remain within 5 to 45 °C, and the unit can be installed at elevations up to 1000 m above sea level without derating. The drive has no additional interface option, so field wiring is limited to the standard power, command, and feedback ports on the front panel. This keeps the external connection layout straightforward while preserving the intended control and feedback functions.
Frequently Asked Questions about KDA 2.1-100-3-DP0-W1:
Q: What is the rated current of the KDA 2.1-100-3-DP0-W1 spindle drive?
A: This drive operates with a rated current of 100 A, enabling it to handle high spindle loads.
Q: What is the required DC supply voltage for the KDA 2.1-100-3-DP0-W1?
A: The KDA 2.1-100-3-DP0-W1 accepts a DC supply voltage of 300 VDC for its operation.
Q: How is the KDA 2.1-100-3-DP0-W1 spindle drive cooled?
A: It uses a mounted heatsink blower for forced cooling to maintain optimal operating temperatures.
Q: What type of speed command input does the KDA 2.1-100-3-DP0-W1 support?
A: This spindle drive supports a speed command value input using a 16-bit parallel digital signal.
Q: What is the function of the second encoder input on the KDA 2.1-100-3-DP0-W1?
A: The second encoder input can be used for spindle feedback or additional motor feedback.
