KDA 3.1-050-3-DQD-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-050-3-DQD-W1 is a spindle drive from the KDA Spindle Drives series and operates with a DC supply voltage of 300 VDC and a rated current of 50 Amps. It features forced cooling via a mounted heatsink blower and accepts digital speed and position command values. The drive supports operation at elevations up to 1000 meters above sea level and in ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.1-050-3-DQD-W1 is a spindle drive from Bosch Rexroth Indramat in the KDA Spindle Drives series. It converts regulated DC link power from a supply module into controlled three-phase output for high-speed motorized spindles used in metal-cutting machines and similar automation tasks. Because the drive closes its velocity and torque loops internally, the spindle can respond quickly to changing cutting loads and commanded speed changes. The unit serves as a dedicated spindle axis module for CNC systems that require fast response and stable speed control during contouring and related machining operations.
The power section operates from a DC bus of 300 VDC, which serves as the energy source for spindle acceleration and deceleration. Current delivery is rated at 50 A, giving the axis the capacity needed for rapid starts without overloading the semiconductors. Thermal management is provided by a mounted heat sink blower with forced cooling, so the airflow path in the housing must remain clear for proper exhaust. The blower itself is powered by 220 V/50-60 Hz, allowing cooling to remain active even when the main DC bus is discharged during a controlled stop. This separate blower supply helps remove residual heat after load changes and during shutdown sequences.
The drive is intended for ambient temperatures from 5 to 45 °C and for installation heights up to 1000 m above sea level, where it can operate within its stated limits. Within that temperature and altitude range, the unit can deliver full current output in typical indoor factory installations. Speed reference data enter through a 16-bit digital parallel interface, while axis coordination can also use a digital position command value input for commanded motion updates. These control channels allow direct communication with compatible CNC or PLC systems during spindle operation and coordinated machine movement. The unit is version 3 in the series.
Frequently Asked Questions about KDA 3.1-050-3-DQD-W1:
Q: What is the rated current specification for the KDA 3.1-050-3-DQD-W1 model?
A: The KDA 3.1-050-3-DQD-W1 spindle drive delivers a rated current of 50 A.
Q: How is the KDA 3.1-050-3-DQD-W1 spindle drive cooled?
A: This unit uses a mounted heatsink blower for forced cooling during operation.
Q: What is the required DC supply voltage for the KDA 3.1-050-3-DQD-W1 spindle drive?
A: It operates with a DC supply voltage of 300 VDC.
Q: What type of speed command interface does the KDA 3.1-050-3-DQD-W1 spindle drive support?
A: The digital speed command value is accepted in a 16-bit parallel format.
Q: What is the maximum installation elevation for the KDA 3.1-050-3-DQD-W1?
A: This spindle drive can be installed at elevations up to 1000 meters above sea level.
