KDA 3.1-050-3-LQD-U1
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The Bosch Rexroth Indramat KDA 3.1-050-3-LQD-U1, a part of the KDA Spindle Drives series, features digital control and an IP20 protection class. It operates at 230 V AC mains voltage, supports up to 16 kHz max pulse frequency, and is air-cooled with an internal fan, weighing approximately 11 kg.
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Product Description:
The KDA 3.1-050-3-LQD-U1 Main Spindle Drive is designed for precise digital control of asynchronous and frameless spindle motors. It supports a rated current of 50 A and operates efficiently across a wide power range. This model is suitable for CNC machine tools and spindle applications.
This KDA 3.1-050-3-LQD-U1 main spindle drive from Bosch Rexroth features a 50 A rated current and a digital 16 bit parallel auxiliary interface for position command values. It uses a forced cooling method with a heatsink blower powered by a 115 V 50 – 60 Hz AC source. The blower unit (model LE4) integrated into the spindle drive system has a mass of 4.2 kilograms. The LE4 features a compact housing with optimized impeller geometry. An independent + 24 V DC power supply is required for the spindle drive's load circuit which draws a continuous current of 1.2 A under normal operating conditions. The speed command is received via the SERCOS interface which ensures reliable communication in digital control systems. Its operational temperature range is from + 5 °C to + 45 °C. The humidity levels must conform to category F of DIN 40 040 standards that ensures safe operation in controlled environments. The cooling system ensures thermal stability even under continuous load.
The KDA 3.1-050-3-LQD-U1 main spindle drive is built for installation at elevations up to 1000 meters above sea level without performance loss. The main spindle drive ensures precise motion control and dynamic stability during C axis interpolation and positioning operations that enables accurate contouring and synchronized machining functions. This KDA series main spindle drive is built to operate in industrial conditions with efficient thermal management and reliable speed command communication.
Frequently Asked Questions about KDA 3.1-050-3-LQD-U1:
Q: How does the KDA 3.1-050-3-LQD-U1 handle reliable command input in high-speed spindle control systems?
A: The KDA 3.1-050-3-LQD-U1 uses a 16-bit parallel auxiliary interface and SERCOS for digital position and speed command input. This ensures fast, stable communication under dynamic CNC spindle operations.
Q: Will the KDA 3.1-050-3-LQD-U1 perform consistently when installed at higher altitudes in industrial plants?
A: The drive operates reliably at elevations up to 1000 meters without any derating or performance degradation. Its design accounts for pressure variation and ambient thermal effects in such environments.
Q: Can the KDA 3.1-050-3-LQD-U1 sustain thermal stability under prolonged machining workloads?
A: The integrated forced-air cooling system with a LE4 heatsink blower supports thermal regulation even under continuous load. This allows the drive to maintain performance during extended high-duty spindle runs.
Q: What additional power inputs are needed when integrating the KDA 3.1-050-3-LQD-U1 into a machine tool system?
A: The drive requires a separate +24 V DC load voltage at 1.2 A along with the main AC input for the blower. This configuration ensures stable auxiliary operation alongside the main spindle tasks.
Q: Does the KDA 3.1-050-3-LQD-U1 support precise control in C-axis spindle operations with varying motor types?
A: The unit maintains control stiffness and accuracy during C-axis tasks with high-speed positioning. It's compatible with both 2AD asynchronous and 1MB frameless motors, allowing versatile integration.
