KDA 3.2-100-3-AYD-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-AYD-U1 belongs to the KDA Spindle Drives series and is a spindle drive with a rated current of 100 Amps and a DC supply voltage of 300 Volts. It features forced cooling through a mounted heatsink blower powered by a 115V AC source and operates in ambient temperatures ranging from 5 to 45 degrees Celsius. The drive includes a digital position command value interface, second encoder and synchronous inputs, and accepts analog speed command values.
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Product Description:
The KDA 3.2-100-3-AYD-U1 spindle drive is manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. It is installed between the DC bus of a machine tool power supply and the three-phase spindle motor, shaping current and voltage so the cutting spindle can track programmed speed profiles accurately. Within an automation cell, the drive supports coordinated motion, letting the CNC controller command rapid accelerations and stable running speed while the integrated blower keeps the power electronics within their thermal limits.
The unit draws its main energy from a DC link rated at 300 VDC, and it can supply up to 100 A of phase current to the motor windings before protective limits engage. A dedicated heat sink fan is powered by an auxiliary line of 115 V/50–60 Hz; this separate source prevents the cooling airflow from dropping if the DC link is momentarily disabled. Heat is removed by a mounted blower that operates in forced cooling mode, so cabinet airflow does not have to provide temperature control. Component stress is further managed by an operating envelope that permits continuous service only when ambient air stays within 5 to 45 °C; outside this band, derating or additional cooling must be considered.
Installation practices also account for altitude and signal handling. Reliable performance is specified up to 1000 m above sea level, where air density still supports the designed heat sink airflow. Speed is commanded through an analog voltage channel that the drive converts into torque-producing current, while positioning tasks can be refined by a separate digital position-command interface. For machines that employ dual-channel feedback, a second encoder input with synchronous timing is provided so the controller can cross-check spindle angle and improve precision during tool changes and tapping cycles.
Frequently Asked Questions about KDA 3.2-100-3-AYD-U1:
Q: What is the rated current for the KDA 3.2-100-3-AYD-U1 spindle drive?
A: The KDA 3.2-100-3-AYD-U1 operates with a rated current of 100 A.
Q: What type of cooling does the KDA 3.2-100-3-AYD-U1 utilize?
A: This spindle drive uses a mounted heatsink blower for its forced cooling system.
Q: What ambient temperature range is supported by the KDA 3.2-100-3-AYD-U1?
A: The KDA 3.2-100-3-AYD-U1 can operate in ambient temperatures ranging from 5 to 45 degrees Celsius.
Q: What is the maximum installation elevation for the KDA 3.2-100-3-AYD-U1?
A: This model is designed for installation up to 1000 meters above sea level.
Q: What AC source is needed for the heatsink blower of the KDA 3.2-100-3-AYD-U1?
A: The AC source required for its heatsink blower is 115V at 50-60Hz.
