KDA 3.1-050-3-AYD-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-050-3-AYD-W1 is a spindle drive from the KDA Spindle Drives series and operates with a rated current of 50 Amps and a DC supply voltage of 300 Volts. It features a mounted heatsink blower for forced cooling and accepts position command values digitally and speed command values as analog inputs. This spindle drive is designed for ambient temperatures from 5 to 45 degrees Celsius and can be installed up to 1000 meters above sea level.
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Product Description:
The KDA 3.1-050-3-AYD-W1 is a spindle drive module produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. As a drive controller, it converts a fixed DC bus into a variable three-phase output for high-speed spindle motors used in machining centers and automation lines. This third-generation unit integrates drive, cooling, and feedback connections in a single housing, allowing machine builders to position it close to the motor and reduce cabinet wiring. Within an automated cell, the module supplies torque and speed loops that coordinate with CNC or PLC motion commands. Its layout also helps keep the spindle drive near the axis it serves, which can simplify routing between the motor and the control cabinet.
The power section operates from a DC bus of 300 VDC, and its output devices are rated for a continuous phase current of 50 A, enabling the drive to energize medium-size spindle motors without derating. Thermal energy is removed by a mounted heat sink blower that receives 220 V at 50–60 Hz; this fan forces air across the fins through forced cooling. Because the blower circuit is independent of the DC link, cooling remains active during braking or standby. Third-generation control electronics handle real-time speed references, and a dedicated hardware port accommodates a second encoder for high-resolution velocity feedback. That additional feedback path supports stable spindle control during rapid speed changes and orientation tasks.
The permitted operating range is 5 to 45 °C, and installation is approved up to 1000 m altitude without additional cooling equipment. Motion coordination benefits from the drive’s digital position command interface, which allows numeric controls to load absolute targets directly into the regulator. When a continuous reference is preferred, the separate channel for an analog speed command provides proportional rpm control. These communication paths share timing with the synchronous input so that interpolated moves remain phase-aligned with external feedback devices. Using separate command paths also lets the control system support both indexed motion and continuously regulated spindle speed in the same machine platform.
Frequently Asked Questions about KDA 3.1-050-3-AYD-W1:
Q: What type of cooling system is utilized in the KDA 3.1-050-3-AYD-W1 spindle drive?
A: This model uses a mounted heatsink blower with forced cooling for heat dissipation.
Q: What is the rated current of the KDA 3.1-050-3-AYD-W1 spindle drive?
A: The KDA 3.1-050-3-AYD-W1 operates with a rated current of 50 amps.
Q: What is the required DC supply voltage for the KDA 3.1-050-3-AYD-W1?
A: The DC supply voltage for this spindle drive is specified at 300 VDC.
Q: What is the maximum installation elevation recommended for the KDA 3.1-050-3-AYD-W1?
A: This spindle drive supports a maximum installation elevation of 1000 meters above sea level.
Q: What type of additional interface is provided for position command values on the KDA 3.1-050-3-AYD-W1?
A: The KDA 3.1-050-3-AYD-W1 offers additional digital interfaces for position command value input.
