KDA 3.2-100-3-LPI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-LPI-W1 is part of the KDA Spindle Drives series and operates with a rated current of 100 Amps and a DC supply voltage of 300 VDC. It includes forced cooling through a mounted heatsink blower powered at 220V and supports SERCOS interface for speed command value. The drive also features a second encoder input for spindle or additional motor feedback and operates efficiently in ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.2-100-3-LPI-W1 is a spindle drive module produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. This Series 3, Version 2 unit converts the shared DC-link voltage into a controlled three-phase output for closed-loop spindle operation. It is intended for machine-tool applications that require stable speed regulation, responsive torque control, and repeatable motion during cutting cycles. By supporting rapid acceleration and deceleration, the drive helps maintain consistent machining performance in milling, turning, and grinding equipment. Its control behavior is suited to spindle axes that must hold commanded speed as cutting load changes throughout a machining sequence.
The internal power electronics draw from a 300 VDC intermediate circuit and can supply up to 100 A of continuous output current to the connected spindle motor. Thermal energy is removed by a mounted heat sink blower powered by a separate 220 V at 50/60 Hz source, which provides forced cooling for the power section. This airflow helps keep semiconductor temperatures within their intended operating range during sustained high-speed operation. The separate blower supply supports cooling independently of the motor output path. The unit accepts a speed command through the series fiber-optic link, and a secondary encoder connection can be used for spindle-mounted or auxiliary motor feedback.
Reliable operation is permitted at ambient temperatures from 5 to 45 °C and at installation sites up to 1000 m above sea level. The digital command channel uses the SERCOS interface, which supports synchronous setpoint transmission to the current regulator. For diagnostic functions or master-slave tracking, the board includes an additional incremental encoder output that mirrors the internal position counter. The mirrored encoder signal can be used by external monitoring circuits or synchronization functions that depend on position-related pulses.
Frequently Asked Questions about KDA 3.2-100-3-LPI-W1:
Q: What cooling method is used in the KDA 3.2-100-3-LPI-W1 spindle drive?
A: Forced cooling is achieved using a mounted heatsink blower on the KDA 3.2-100-3-LPI-W1 spindle drive.
Q: What is the DC supply voltage required for the KDA 3.2-100-3-LPI-W1?
A: This spindle drive requires a DC supply voltage of 300 VDC for operation.
Q: What is the rated current for the KDA 3.2-100-3-LPI-W1 spindle drive?
A: The KDA 3.2-100-3-LPI-W1 provides a rated current output of 100 A.
Q: What capability does the second encoder input provide on the KDA 3.2-100-3-LPI-W1?
A: It includes a second encoder input for spindle feedback or additional motor feedback.
Q: What is the allowed ambient temperature range for the KDA 3.2-100-3-LPI-W1?
A: The ambient temperature operating range for this spindle drive is from 5 to 45 degrees Celsius.
