KDA 2.1-100-3-L0D-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-100-3-L0D-U1 is a spindle drive from the KDA Spindle Drives series. It provides a rated current of 100 Amps and works with a DC supply voltage of 300 VDC. The drive uses a forced cooling system with a mounted heatsink blower and supports a SERCOS interface for speed command value.
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Product Description:
The KDA 2.1-100-3-L0D-U1 spindle drive is produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Classified as a version 2 unit in this product family, it forms the power stage that links a machine controller to a synchronous or asynchronous spindle motor. Within an automation cell, the drive interprets digital reference values, governs the inverter bridge, and safeguards the motor so that cutting, drilling, or grinding processes run at precise rotational speeds.
Its DC bus is stabilized at 300 VDC, a level that matches the common power supply used in multi-axis cabinets and allows energy to be shared with regenerative modules. The power section can deliver a continuous phase current of 100 A, giving the spindle enough torque for heavy cuts without forcing the inverter into overload. Thermal energy is removed by a heat sink blower fed from an auxiliary line of 115 V/50-60 Hz; this localized fan maintains semiconductor junction temperatures independent of enclosure airflow. Speed commands reach the drive over the SERCOS Interface, allowing deterministic transmission of setpoints from the CNC controller. An auxiliary input accepts a digital position command value for indexed moves.
The cooling assembly is supplied as a mounted heat sink blower that expels waste heat directly from the aluminum ribbing; because airflow is driven rather than passive, the unit is classified for forced cooling service. Reliable operation is specified for ambient temperatures between 5 to 45 °C, so installation in sealed cabinets must account for this range. Mounting altitude is limited to 1000 m above sea level to prevent a reduction in dielectric strength and fan performance. For axes that need a redundant speed sensor, the spindle drive does not feature an additional input for a second encoder.
Frequently Asked Questions about KDA 2.1-100-3-L0D-U1:
Q: What is the required DC supply voltage for the KDA 2.1-100-3-L0D-U1 spindle drive?
A: The KDA 2.1-100-3-L0D-U1 spindle drive accepts a DC supply voltage of 300 VDC.
Q: What is the rated current of the KDA 2.1-100-3-L0D-U1 spindle drive?
A: This model has a rated current of 100 A, making it suitable for demanding spindle applications.
Q: How is the KDA 2.1-100-3-L0D-U1 spindle drive cooled?
A: Cooling is accomplished with a mounted heatsink blower using forced cooling for reliable temperature management.
Q: What temperature range can the KDA 2.1-100-3-L0D-U1 function in?
A: The KDA 2.1-100-3-L0D-U1 operates within an ambient temperature range of 5 to 45 degrees Celsius.
Q: Which interface does the KDA 2.1-100-3-L0D-U1 use for speed command value input?
A: The speed command value is communicated via a SERCOS interface on this model.
