KDA 3.2-100-3-AYI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-AYI-W1 spindle drive is part of the KDA Spindle Drives series and is rated at 100 Amps with a DC supply voltage of 300 VDC. It features forced cooling through a mounted heatsink blower powered at 220V 50-60Hz, and operates within an ambient temperature range of 5 to 45 degrees Celsius. This drive offers incremental encoder output as well as second encoder and synchronous inputs.
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Product Description:
Bosch Rexroth Indramat builds the KDA 3.2-100-3-AYI-W1 in the KDA Spindle Drives series. As a spindle drive, the unit forms the power stage between a machine-tool CNC controller and the high-speed motor, carrying out speed and torque commands with the response needed for cutting, drilling, and grinding tasks. It manages motor current in real time so spindle speed remains responsive during acceleration, steady machining, and rapid deceleration. The internal designation 3 identifies the basic hardware platform, while version 2 indicates the interface revision. Industrial automation systems use this drive when precise regulation of asynchronous or synchronous spindle motors is required across a wide operating range.
The power section is supplied from a DC bus of 300 VDC, and its output capability reaches a continuous phase current of 100 A, allowing direct coupling to large-frame spindle motors without external step-up transformers. Thermal stability is maintained by a mounted heat sink blower, and airflow is governed by forced cooling so internal semiconductor temperatures stay within limits during heavy-duty cycles. That blower is energized from an auxiliary source rated at 220 V, 50–60 Hz, rather than from the DC link. Because the cooling source is separate from the main bus supply, thermal management can remain available during operating transitions and extended duty periods.
An incremental feedback channel provides incremental encoder output for numerical control systems, while a dedicated port accepts a second encoder input and a synchronous input so the spindle can be referenced against a master axis during rigid tapping or tool-change operations. This arrangement supports timing-dependent processes that require coordinated spindle position information. The velocity loop receives its demand through an analog speed command, which simplifies retrofit use where digital fieldbuses are unavailable. The drive is intended for operation between 5 to 45 °C and at elevations up to 1000 m above sea level. Outside those conditions, derating or supplemental cooling may be required.
Frequently Asked Questions about KDA 3.2-100-3-AYI-W1:
Q: What DC supply voltage does the KDA 3.2-100-3-AYI-W1 spindle drive require?
A: The KDA 3.2-100-3-AYI-W1 requires a DC supply voltage of 300 VDC during operation.
Q: What is the rated current output of the KDA 3.2-100-3-AYI-W1 spindle drive?
A: This model delivers a rated current of 100 A.
Q: How is the KDA 3.2-100-3-AYI-W1 spindle drive cooled?
A: The cooling system uses a mounted heatsink blower with forced cooling.
Q: What is the permissible ambient temperature range for KDA 3.2-100-3-AYI-W1?
A: The spindle drive supports operation within an ambient temperature range of 5 to 45 degrees Celsius.
Q: What additional interfaces are available on the KDA 3.2-100-3-AYI-W1 spindle drive?
A: This model features an incremental encoder output as an additional interface.
