KDA 3.1-050-3-APD-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-050-3-APD-W1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 50 Amps and operates with a DC supply voltage of 300 VDC. The drive uses forced cooling with a mounted heatsink blower and is suitable for installation up to 1000 meters above sea level.
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Product Description:
The KDA 3.1-050-3-APD-W1 is a spindle drive module produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. In machine-tool and production-cell applications, this unit converts energy from a regulated DC link into three-phase output for a high-speed spindle. It supports closed-loop control so the spindle can accelerate, decelerate, and hold commanded speed during precision machining. The design is suited to systems that need steady rotational performance during changing loads, such as cutting, drilling, or grinding operations. Because spindle load can change quickly, the control stage is intended to respond smoothly to demand changes without upsetting the DC-link supply.
Internal power electronics operate from a regulated DC bus of 300 VDC. The current stage is rated for a continuous output of 50 A, which allows the module to drive medium-frame synchronous or induction spindles without reducing output under normal operating conditions. Thermal energy is removed by a mounted heat-sink blower that uses forced cooling. The blower is powered from an auxiliary supply of 220 V, 50/60 Hz, so airflow remains available for the heat sink during operation. Speed references are provided as an external analog command, while a separate digital channel carries enable and fault signals for integration with higher-level control hardware.
Installation is permitted up to 1000 m above sea level and within an ambient temperature range of 5 to 45 °C. Staying within those limits helps maintain proper cooling performance and stable semiconductor operation. A secondary encoder socket accepts feedback from either the motor resolver or an auxiliary transducer, which gives the drive flexible feedback options for spindle applications. The drive also provides a digital position command value interface so a CNC can send exact rotational targets independently of the analog speed loop. It can therefore support applications that need both conventional speed control and commanded spindle orientation.
Frequently Asked Questions about KDA 3.1-050-3-APD-W1:
Q: What is the required DC supply voltage for the KDA 3.1-050-3-APD-W1 spindle drive?
A: The KDA 3.1-050-3-APD-W1 operates with a DC supply voltage of 300 VDC.
Q: What is the rated current supported by the KDA 3.1-050-3-APD-W1?
A: This spindle drive supports a rated current of 50 A for reliable performance.
Q: How is the KDA 3.1-050-3-APD-W1 spindle drive cooled?
A: Cooling is accomplished by a mounted heatsink blower utilizing forced cooling.
Q: What is the acceptable ambient temperature range for the KDA 3.1-050-3-APD-W1?
A: The ambient operating temperature range for this model is 5 to 45 degrees Celsius.
Q: Does the KDA 3.1-050-3-APD-W1 support a secondary encoder input for feedback purposes?
A: This unit includes a second encoder input for spindle feedback or additional motor feedback.
