KDA 3.1-050-3-A0D-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-050-3-A0D-W1 is a spindle drive in the KDA Spindle Drives series with a rated current of 50 Amps and operates with a DC supply voltage of 300 Volts. The unit uses a mounted heatsink blower for forced cooling and is designed to operate within an ambient temperature range of 5 to 45 degrees Celsius. It features position command value inputs that are digital and speed command value inputs that are analog.
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Product Description:
The KDA 3.1-050-3-A0D-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. It is used in multi-axis machine tools where a dedicated inverter regulates spindle motion independently of the feed axes. By linking to a common DC bus, the unit delivers commanded velocity and torque profiles so cutters, grinders, or drilling heads can follow programmed interpolation paths with consistent repeatability. This arrangement lets the spindle respond to changing load conditions while the rest of the machine continues to operate on coordinated motion commands.
The drive operates from a bus voltage of 300 VDC, and its power section is rated for a continuous output of 50 A. A separate heatsink blower runs from an AC supply of 220 V 50-60 Hz, so cooling airflow remains stable even when the DC link dips during acceleration. Operation is permitted at ambient temperatures from 5 to 45 °C, which supports use in enclosed industrial cabinets with controlled airflow. Installation is permitted up to 1000 m above sea level without derating, allowing the drive to maintain its stated operating range at typical industrial elevations.
Thermal management is handled by a mounted heatsink blower that forces air through the fin stack, and this forced cooling method helps keep the heat sink within its operating range during high-duty milling cycles. Motion commands can be sent as a digital position command value, while instantaneous speed adjustment is accepted on a separate channel as an analog speed command value. This combination allows the control system to manage axis coordination and spindle speed correction through different input paths as needed by the machine process. A second encoder connector is not provided, so feedback cabling remains simpler and front-panel space is left available for diagnostics and communication hardware.
Frequently Asked Questions about KDA 3.1-050-3-A0D-W1:
Q: What is the rated current of the KDA 3.1-050-3-A0D-W1 spindle drive?
A: The KDA 3.1-050-3-A0D-W1 spindle drive has a rated current of 50 A, ensuring it can handle demanding motor loads.
Q: How is the KDA 3.1-050-3-A0D-W1 spindle drive cooled?
A: This model features forced cooling with a mounted heatsink blower, powered by a 220V source at 50-60Hz.
Q: What is the required DC supply voltage for the KDA 3.1-050-3-A0D-W1?
A: The drive operates on a DC supply voltage of 300 VDC, suitable for industrial settings.
Q: What type of speed command value does the KDA 3.1-050-3-A0D-W1 accept?
A: The KDA 3.1-050-3-A0D-W1 accepts an analogue speed command value for precise control.
Q: What is the allowable ambient temperature range for the KDA 3.1-050-3-A0D-W1 spindle drive?
A: This drive is designed for safe operation within ambient temperatures of 5 to 45 degrees Celsius.
