KDA 2.1-100-3-LQI-U1
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The KDA 2.1-100-3-LQI-U1 is a spindle drive with a liquid-cooled, integrated cooling method and a rated current of 100 A. Manufactured by Bosch Rexroth Indramat under the KDA Spindle Drives series, it weighs approximately 16 kg and operates at 24 VDC control and 3 × 400/460 VAC power. The drive features IP20 protection.
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Product Description:
The Bosch Rexroth Indramat manufactured KDA 2.1-100-3-LQI-U1 Drive features high-performance capabilities in industrial spindle applications. It is built to operate under a nominal current of 100 A, providing optimal performance in systems with high-speed and high-load demands.
This drive offers a continuous current of 70 A to guarantee stable operation under continuous workloads without compromising performance. This spindle drive operates at a DC link voltage of 300 VDC, which provides stable energy transfer through the system. The system of KDA 2.1-100-3-LQI-U1 drive employs a forced-air cooling mechanism, critical for sustaining thermal stability for continuous duty operation. This spindle drive has a dedicated heatsink fan for active cooling, and it runs with a power supply of 115V. It also works at a frequency range of 50–60 Hz to be compatible with typical industrial power supplies. This spindle drive has an auxiliary output interface that provides an incremental encoder signal output, which is critical for system monitoring and closed-loop feedback. The velocity reference of this drive is controlled via a SERCOS Interface, which allows high-speed digital communication and synchronization across automation networks.
The KDA 2.1-100-3-LQI-U1 spindle drive is designed to run within an ambient temperature environment from +5 °C to +45 °C under nominal loads. For safe handling and usage, this spindle drive can tolerate a storage and transport temperature of -30 °C to +80 °C to guarantee stability. The combined weight of this spindle drive is 17.1 kg, which includes all built-in parts. The blower unit of this drive, utilized for active cooling, weighs 4.2 kg and is designed to contribute specifically to heat efficiency. A mounting kit weighing 1.7 kg is also included for safe and stable mechanical mounting inside the control cabinet.
Frequently Asked Questions about KDA 2.1-100-3-LQI-U1:
Q: Why is forced-air cooling via a heatsink fan used in this spindle drive?
A: Forced-air cooling keeps the internal temperature stable during continuous operation. It prevents overheating and ensures thermal efficiency at full load.
Q: How does the SERCOS interface enhance system communication in KDA 2.1-100-3-LQI-U1?
A: The SERCOS interface provides real-time communication with high data integrity. It ensures precise synchronization between the drive and control units in multi-axis setups.
Q: How does the 1V peak-to-peak sine wave encoder input help in accuracy?
A: This analog signal provides smoother and more granular feedback than digital signals. It improves spindle positioning accuracy, especially at varying speeds.
Q: What role does the incremental encoder output play in the system?
A: It transmits real-time feedback to the control unit for speed and position monitoring. This helps in maintaining closed-loop control and operational consistency.
Q: What protection does the KDA 2.1-100-3-LQI-U1 offer during power fluctuations?
A: The drive’s 300 VDC link voltage provides a buffer against voltage instability. This allows safer operation under variable power supply conditions.
