KDA 2.1-150-3-DPS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-150-3-DPS-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 150 Amps and operates on a 300 VDC supply voltage. It uses a forced cooling system with a mounted heatsink blower and is equipped with a serial interface (RS 232 C) and a second encoder input for spindle or motor feedback.
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Product Description:
The KDA 2.1-150-3-DPS-W1 is a spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. As a dedicated power module, it energizes and regulates machine-tool spindles by converting bus voltage into a controlled three-phase output while monitoring speed feedback. This allows the spindle to respond accurately to CNC commands during positioning, speed regulation, and contouring tasks. The unit is version 2 in the product line and provides the electrical link between the spindle and the control system for coordinated machine operation.
The drive is supplied from a shared bus at 300 VDC, and its power stage can deliver up to 150 A of continuous current to the motor. Heat from the IGBT section is removed by a mounted heat sink blower, and the cooling method uses forced cooling so airflow remains consistent during extended cutting duty. The cooling fan is powered by an auxiliary supply of 220 V, 50/60 Hz, which keeps the thermal system separate from variations on the DC link. This arrangement supports stable thermal performance during sustained spindle operation and helps the drive maintain predictable output under load.
System communication is handled through a serial interface (RS-232-C), and the control board also accepts a second encoder input for spindle or auxiliary motor position data. Target speed is sent as a 16-bit parallel digital command, which gives the control system fine command resolution for tasks such as tapping, threading, and synchronized tool changes. The unit maintains full electrical performance in ambient temperatures from 5 to 45 °C and at elevations up to 1000 m above sea level. These operating limits make the drive suitable for machining centers and turning stations that require reliable spindle control across normal industrial installation conditions.
Frequently Asked Questions about KDA 2.1-150-3-DPS-W1:
Q: What is the rated current of the KDA 2.1-150-3-DPS-W1 spindle drive?
A: The KDA 2.1-150-3-DPS-W1 drive features a rated current of 150 A, supporting high power spindle operations.
Q: How is the KDA 2.1-150-3-DPS-W1 spindle drive cooled?
A: Cooling is achieved using a mounted heatsink blower, providing forced cooling for reliable heat dissipation.
Q: What type of additional interface is available on the KDA 2.1-150-3-DPS-W1?
A: This spindle drive includes a serial interface (RS 232 C) as an additional interface for communication.
Q: What type of speed command value does the KDA 2.1-150-3-DPS-W1 support?
A: The speed command value for this drive is provided as a digital 16-bit parallel input.
Q: What is the maximum installation elevation recommended for the KDA 2.1-150-3-DPS-W1?
A: The maximum installation elevation for this model is 1000 meters above sea level.
