KDA 3.2-050-3-L0S-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-050-3-L0S-U1 is a spindle drive that is part of the KDA Spindle Drives series. It operates with a rated current of 50 Amps and a DC supply voltage of 300 VDC, utilizing forced cooling via a mounted heatsink blower. The drive features an RS 232 C serial interface and supports speed command values through a SERCOS interface.
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Product Description:
The spindle drive KDA 3.2-050-3-L0S-U1 is built by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. It is intended to regulate high-speed machine-tool spindles by converting DC bus power into variable three-phase output for the connected motor. This arrangement lets the control system adjust acceleration, steady running speed, and load response for cutting, drilling, routing, and grinding processes where spindle stability affects surface finish and repeatability. Because the output voltage and frequency are controlled by the drive, the spindle can hold commanded speed more accurately when process load changes during operation. The compact cabinet-mounted format also suits equipment in which the spindle drive operates beside feed-axis electronics and other motion hardware in the same enclosure.
The drive delivers a continuous output current of 50 A and requires a shared DC link of 300 VDC. A blower rated at 115 V/50-60 Hz moves air through the heat sink so heat from the power section can be removed during sustained spindle operation, and the unit uses forced cooling to keep internal components within normal operating temperature. Forced airflow is especially important in spindle service because long periods at elevated current place a steady thermal load on switching devices and heat-sink surfaces. Control access is provided through an onboard Serial interface (RS-232 C). That connection supports parameter access and basic serial communication with compatible external devices without using the motion network. The drive does not include a secondary encoder port, so any additional feedback channel must be handled outside the unit.
Velocity references are exchanged over a SERCOS interface, which allows synchronized digital commands with other networked axes and supports coordinated spindle behavior in automated cells. Digital reference exchange over the network helps the spindle follow machine sequences such as synchronized start, speed change, and controlled deceleration. The unit can operate in ambient temperatures from 5 to 45 °C and at installation altitudes up to 1000 m. It is listed as Series version 2. These operating conditions are suited to enclosed cabinet installations where ambient heat and elevation affect available cooling margin.
Frequently Asked Questions about KDA 3.2-050-3-L0S-U1:
Q: What is the required DC supply voltage for the KDA 3.2-050-3-L0S-U1 spindle drive?
A: The KDA 3.2-050-3-L0S-U1 operates with a DC supply voltage of 300 VDC.
Q: What is the rated current capacity of the KDA 3.2-050-3-L0S-U1?
A: This spindle drive supports a rated current of 50 A for continuous operation.
Q: How is the KDA 3.2-050-3-L0S-U1 cooled during operation?
A: Cooling is provided by a mounted heatsink blower operating on 115V AC at 50-60Hz.
Q: What type of additional communication interface does the KDA 3.2-050-3-L0S-U1 have?
A: The KDA 3.2-050-3-L0S-U1 features a serial interface (RS 232 C) as an additional interface option.
Q: What is the maximum installation elevation for the KDA 3.2-050-3-L0S-U1 spindle drive?
A: This model is designed for installation at elevations up to 1000 meters above sea level.
