KDA 2.1-050-3-DY0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-050-3-DY0-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and a DC supply voltage of 300 VDC. It uses forced cooling with a mounted heatsink blower powered by a 220V, 50-60Hz AC source and operates in ambient temperatures from 5 to 45 degrees Celsius. The drive offers digital speed command values in 16-bit parallel and includes a second encoder input with synchronous input support.
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Product Description:
The KDA 2.1-050-3-DY0-W1 spindle drive is manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Positioned between the machine controller and a high-speed motor, it modulates DC-bus energy so that a machining spindle receives stable voltage and finely stepped speed commands. This control role helps maintain spindle stability during speed changes and varying cutting loads. As part of Series 2, the unit is intended for closed-loop speed control in milling, grinding, and drilling stations where precise acceleration profiles are required.
This drive draws from a DC bus rated at 300 VDC, which serves as the internal power rail that the inverter section switches into three-phase output for the motor. Continuous output capability reaches 50 A, giving the spindle enough current for demanding cutting passes without overheating the drive section. Speed references arrive on a 16-bit parallel digital interface, which provides 65,536 discrete speed words for tight resolution during interpolation. The parallel command path supports direct numeric speed transfer from the control system without analog scaling drift. Thermal management relies on a heat sink-mounted blower, and airflow is increased by forced-air cooling so semiconductor temperatures remain within safe limits during prolonged duty. No additional interface is installed, so the command and diagnostic lines are limited to the standard KDA connector set.
The blower receives utility power at 220 V at 50/60 Hz, allowing it to operate from common plant power circuits. Permitted ambient temperatures range from 5 to 45 °C, letting the unit run in most controlled shop environments without derating. Installation is permitted up to 1000 m above sea level; above that height, thinner air reduces the efficiency of the forced-air path. The drive also includes a second encoder input and a synchronous input, so it can process spindle position feedback independently of the primary control loop for spindle orientation or electronic gearing routines.
Frequently Asked Questions about KDA 2.1-050-3-DY0-W1:
Q: What is the DC supply voltage required for the KDA 2.1-050-3-DY0-W1 spindle drive?
A: This unit features a DC supply voltage of 300 VDC.
Q: What is the rated current capacity of the KDA 2.1-050-3-DY0-W1?
A: The KDA 2.1-050-3-DY0-W1 supports a rated current of 50 A.
Q: How is the KDA 2.1-050-3-DY0-W1 spindle drive cooled?
A: Forced cooling is provided via a mounted heatsink blower on this model.
Q: What ambient temperature range does the KDA 2.1-050-3-DY0-W1 support?
A: Operation is supported within an ambient temperature range of 5 to 45 degrees Celsius.
Q: What type of speed command input does the KDA 2.1-050-3-DY0-W1 utilize?
A: The device accepts a digital speed command value with 16 bit parallel input.
