KDA 3.2-100-3-LY0-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-LY0-U1 is a spindle drive from the KDA Spindle Drives series with a rated current of 100 Amps and operates on a DC supply voltage of 300 VDC. It uses forced cooling with a mounted heatsink blower powered at 115V, 50-60Hz, and includes a SERCOS speed command interface along with a second encoder input.
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Product Description:
The KDA 3.2-100-3-LY0-U1 belongs to the KDA Spindle Drives series from Bosch Rexroth Indramat. As a spindle drive, it supplies controlled three-phase power to high-speed machine-tool motors, allowing CNC systems to vary spindle speed and torque during cutting, drilling, or grinding cycles. This type of control helps the spindle respond smoothly to changing load conditions during acceleration, steady machining, and deceleration. It also supports stable speed regulation during rapid spindle ramp changes. Its integrated heat sink blower and internal logic make it a compact cabinet module for dedicated spindle regulation where a separate external cooling assembly is not required.
The power stage is energized from a DC bus rated at 300 VDC, and it can deliver a continuous output of 100 A to the connected spindle motor. A separate blower circuit operates from 115 V/50–60 Hz, keeping the mounted heat sink actively ventilated during heavy cutting loads. The unit uses forced cooling, so airflow is produced by the onboard fan rather than by natural convection. Thermal design supports operation within an ambient temperature range of 5 to 45 °C. Stable heat removal helps the power semiconductors remain within their intended operating range during long machining cycles. The control board converts incoming speed commands into precise current vectors for accurate spindle regulation and repeatable response.
The mechanical chassis may be mounted at elevations up to 1000 m above sea level without derating, supporting use in most industrial regions. Velocity references are transmitted through the SERCOS interface, which allows the spindle axis to exchange real-time command data with the machine control. High-resolution rotor feedback is accepted through a second encoder input that can be synchronized with the primary channel for dynamic spindle orientation and monitored positioning functions. The configuration includes no additional interface option, which reduces wiring complexity when no fieldbus extension or analog velocity loop is required.
Frequently Asked Questions about KDA 3.2-100-3-LY0-U1:
Q: How is the KDA 3.2-100-3-LY0-U1 spindle drive cooled?
A: The KDA 3.2-100-3-LY0-U1 spindle drive features forced cooling via a mounted heatsink blower.
Q: What is the rated current specification for the KDA 3.2-100-3-LY0-U1?
A: This model operates with a rated current of 100 A, supporting high-demand applications.
Q: What is the power requirement for the KDA 3.2-100-3-LY0-U1 heatsink blower?
A: The heatsink blower runs on an AC source of 115V at 50-60Hz.
Q: What DC supply voltage does the KDA 3.2-100-3-LY0-U1 spindle drive require?
A: It supports a DC supply voltage of 300 VDC for reliable operation.
Q: Which interface is used for speed command input on the KDA 3.2-100-3-LY0-U1?
A: The KDA 3.2-100-3-LY0-U1 accepts speed command input via a SERCOS interface.
