KDA 2.1-100-3-AYI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-100-3-AYI-W1 is a spindle drive from the KDA Spindle Drives series and features a forced cooling system using a mounted heatsink blower powered by a 220V AC source. It operates at a rated current of 100 Amps and accepts a DC supply voltage of 300 Volts. The drive includes both incremental encoder output and a second encoder input with synchronous input, and is designed for operation within ambient temperatures of 5 to 45 degrees Celsius.
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Product Description:
The KDA 2.1-100-3-AYI-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. Designed for closed-loop control of high-speed machine-tool spindles, it converts a fixed DC bus into a variable three-phase output that tracks velocity references from the CNC. Within an automation cabinet, the unit coordinates with feedback encoders to maintain constant torque and speed, providing the intermediary power stage between the controller and the spindle motor. Because the output frequency and current are regulated continuously, the spindle can hold its commanded speed more effectively as cutting load changes during operation.
The drive draws power from a DC bus rated at 300 VDC, and its output stage is sized for a continuous current of 100 A so large spindle motors can accelerate quickly during tool changes. Cooling hardware is powered from an auxiliary source of 220 V/50-60 Hz, keeping the ventilation circuit electrically separate from the power stage. For reliable operation on factory floors, the electronics tolerate ambient temperatures from 5 to 45 °C and can be mounted at elevations up to 1000 m above sea level without derating. Velocity information reaches the control loop through a second encoder input, which allows two feedback channels to be synchronized for spindle regulation and monitoring.
Integration with the motion controller is simplified because the speed setpoint arrives as an analog voltage, eliminating digital fieldbus conversions and reducing latency in the servo loop. To share real-time position data with external monitoring devices, the drive provides an incremental encoder output that parallels the onboard evaluation circuitry. Heat removal relies on forced cooling, achieved by a mounted heat sink blower attached directly to the aluminum backplate. That airflow path moves heat away from the power transistors while keeping cabinet air separate from the cooling stream. The encoder output can also be routed to external display or measurement devices that require a live pulse signal from spindle rotation.
Frequently Asked Questions about KDA 2.1-100-3-AYI-W1:
Q: What is the rated current for the KDA 2.1-100-3-AYI-W1 spindle drive?
A: The KDA 2.1-100-3-AYI-W1 supports a rated current of 100 A.
Q: How is the KDA 2.1-100-3-AYI-W1 spindle drive cooled?
A: The drive utilizes a mounted heatsink blower for forced cooling.
Q: What is the DC supply voltage specification for the KDA 2.1-100-3-AYI-W1?
A: The required DC supply voltage is 300 VDC.
Q: What AC source is needed for the KDA 2.1-100-3-AYI-W1's heatsink blower?
A: An AC source of 220V/50-60Hz powers the heatsink blower on this model.
Q: What is the supported ambient temperature range for the KDA 2.1-100-3-AYI-W1 spindle drive?
A: This spindle drive operates in ambient temperatures from 5 to 45 degrees Celsius.
