KDA 3.1-150-3-DPS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-DPS-W1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 150 Amps and a DC supply voltage of 300 Volts. This drive is equipped with forced cooling via a mounted heatsink blower and supports a second encoder input for spindle or additional motor feedback. It includes a RS 232 C serial interface and operates in ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.1-150-3-DPS-W1 is a spindle drive manufactured by Bosch Rexroth Indramat and assigned to the KDA Spindle Drives series. Within an automation cell, it links the CNC controller to a high-speed motorized spindle, regulating current, velocity, and position so that metal-cutting or grinding processes stay within programmed tolerances. As a Series 3 device, the drive supports demanding production cycles and can synchronize spindle motion with auxiliary axes through dedicated feedback channels. By closing the control loop between the CNC and the spindle motor, it helps maintain stable cutting conditions during acceleration, steady-state rotation, and commanded speed changes.
The power section is designed for a continuous output of 150 A while drawing from a regulated bus voltage of 300 VDC. An internal heat sink blower is energized from an auxiliary supply rated at 220 V / 50–60 Hz, helping maintain stable semiconductor temperatures during sustained load. Speed references arrive as a digital word coded in 16-bit parallel format, allowing fine resolution over the full rpm range. That input structure supports direct transfer of command values from compatible control hardware without analog conversion stages. For parameter adjustment and data logging, the controller exposes a RS-232C serial interface that can be connected directly to a host computer or plant network gateway.
The unit supports ambient conditions from 5 to 45 °C, and reliable operation is maintained up to 1000 m installation altitude without derating. Cooling air is driven across the fin array by a mounted heat sink blower operating in forced cooling mode, which allows installation in tighter cabinets where natural convection is not enough. The forced airflow path helps remove heat from the finned cooling surface during continuous operation. A second encoder input is provided so the drive can process spindle feedback or an additional motor encoder when compound axis configurations are required. This arrangement supports applications that need coordinated feedback from more than one rotating element.
Frequently Asked Questions about KDA 3.1-150-3-DPS-W1:
Q: What is the rated current capability of the KDA 3.1-150-3-DPS-W1 spindle drive?
A: The KDA 3.1-150-3-DPS-W1 spindle drive supports a rated current of 150 A, suitable for demanding spindle applications.
Q: How is the KDA 3.1-150-3-DPS-W1 spindle drive cooled during operation?
A: Forced cooling is provided via a mounted heatsink blower operating on a 220V AC source at 50-60Hz.
Q: What kind of speed command input does the KDA 3.1-150-3-DPS-W1 accept?
A: The digital speed command value is provided with a 16-bit parallel input for precise speed control.
Q: Which additional interface does the KDA 3.1-150-3-DPS-W1 provide?
A: A serial interface (RS 232 C) is available for integration with compatible control systems.
Q: What is the maximum permitted installation elevation for the KDA 3.1-150-3-DPS-W1?
A: This spindle drive is designed for installation at elevations up to 1000 meters above sea level.
