KDA 3.1-150-3-LQ0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-LQ0-W1 is a spindle drive from the KDA Spindle Drives series, offering a rated current of 150 Amps and operating on a 300 VDC supply voltage. It features forced cooling with a mounted heatsink blower powered by a 220V AC source and supports speed command input via a SERCOS interface. The drive is designed for ambient temperatures between 5 and 45 degrees Celsius and can be installed up to 1000 meters above sea level.
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Product Description:
The KDA 3.1-150-3-LQ0-W1 is a spindle drive module from the KDA Spindle Drives series produced by Bosch Rexroth Indramat. As a drive controller, it regulates the current and voltage sent to asynchronous or synchronous spindle motors, providing speed and torque control for machine tool spindles and other high-speed rotating assemblies in automated production lines. This type of control helps the spindle respond accurately during acceleration, steady cutting, and deceleration. It is intended for use in drive systems where spindle speed must remain stable as load conditions change. Hardware release level 3 identifies the electrical revision used in this unit and matches it with compatible power supplies and feedback networks in modular control cabinets.
The drive draws control energy from a DC link rated at 300 VDC and delivers up to 150 A of continuous current to the connected motor during demanding cutting or drilling cycles. Internal losses are removed by a mounted heat sink blower that uses a separate supply of 220 V at 50/60 Hz. The blower moves air directly across the cooling fins, and the design relies on forced cooling to keep semiconductor temperatures within safe operating limits during sustained high-speed use. An internal control path converts external speed references into precise phase currents, while the electronics support diagnostic messaging and parameter storage in nonvolatile memory.
Integration in the control system is handled through the SERCOS interface, and the LQ0 configuration does not include an additional interface option. The unit can be installed at elevations up to 1000 m above sea level and operates in ambient temperatures from 5 °C to 45 °C without derating when airflow around the heat sink exhaust remains unobstructed. These operating limits apply when the cooling path is kept clear so exhaust air can leave the module without restriction. Stable airflow is necessary to support normal thermal behavior during extended spindle operation.
Frequently Asked Questions about KDA 3.1-150-3-LQ0-W1:
Q: What is the rated current capability of the KDA 3.1-150-3-LQ0-W1 spindle drive?
A: The KDA 3.1-150-3-LQ0-W1 supports a rated current of 150 A during standard operation.
Q: How is the KDA 3.1-150-3-LQ0-W1 spindle drive cooled during operation?
A: This drive is equipped with a mounted heatsink blower and uses forced cooling to maintain optimal temperatures.
Q: What is the acceptable ambient temperature range for the KDA 3.1-150-3-LQ0-W1?
A: The KDA 3.1-150-3-LQ0-W1 is designed to operate within ambient temperatures ranging from 5 to 45 degrees Celsius.
Q: What type of speed command interface does the KDA 3.1-150-3-LQ0-W1 support?
A: The drive's speed command input is via a SERCOS Interface, allowing precise control within automated systems.
Q: What DC supply voltage does the KDA 3.1-150-3-LQ0-W1 require?
A: This spindle drive operates with a DC supply voltage of 300 VDC.
