KDA 3.1-150-3-LQI-U1
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The KDA 3.1-150-3-LQI-U1 is a high-performance spindle drive with a rated continuous current of 150 A and internal fan cooling. Designed by Bosch Rexroth Indramat as part of the KDA Spindle Drives series, it weighs approximately 38 kg. It operates on 3 x 400 V AC input voltage with support for SERCOS/digital communication interfaces.
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Product Description:
Bosch designs advanced motion control systems that ensure operational accuracy in automated machinery. The KDA 3.1-150-3-LQI-U1 Spindle Drive combines accurate electronic regulation with efficient power handling. It maintains constant performance in demanding industrial environments. The spindle drive supports industrial automation processes that requires stable speed and controlled torque delivery.
The KDA 3.1-150-3-LQI-U1 drive uses forced cooling. The active airflow system regulates internal temperature and prevents thermal overload during extended duty operation. The speed communication value input is SERCOS-Interface. The fiber-optic based protocol ensures real-time speed commands with low signal latency. The connecting clamps are X4 fiber optic cable terminals. The defined connection standard provides stable data transfer and maintains electromagnetic interference resistance. The permanent ambient operating range is 0 to +45 °C. The specified thermal limits confirm efficient drive performance in standard industrial environments. The DC bus voltage is 300 V. The voltage level aligns with industrial supply requirements while supporting stable energy conversion to motor windings. The auxiliary interface provides incremental encoder output. The output enables downstream controllers to verify shaft position and monitor motor synchronization.
The KDA 3.1-150-3-LQI-U1 drive has high stiffness. The rigid control response provides stable spindle positioning under fluctuating mechanical load conditions. The AC supply source for the heatsink blower is 115 V at 50–60 Hz. The dedicated blower supply maintains constant cooling capacity independent of main drive function. The forced air exchange system prevents local overheating at the heatsink which extends it service life. The fiber-optic design of the SERCOS communication link provides electrical isolation which reduces ground loop interference. The defined structure increases diagnostic stability and long-term signal integrity. The Bosch spindle drive combines precise regulation with mechanical strength which ensures suitability for challenging machining systems.
Frequently Asked Questions about KDA 3.1-150-3-LQI-U1:
Q: What type of voltage input does the KDA 3.1-150-3-LQI-U1 require?
A: The drive operates with a 300 V DC bus voltage, which provides efficient energy transfer and stability for continuous, high-speed spindle applications in industrial automation.
Q: How does the SERCOS-Interface benefit this spindle drive?
A: The digital SERCOS-Interface provides precise command and speed control signals, ensuring accurate synchronization between the KDA 3.1-150-3-LQI-U1 and its control system.
Q: What cooling method is used in this Bosch Rexroth spindle drive?
A: The unit employs forced cooling, using a heatsink blower powered by an independent AC supply, maintaining thermal stability during extended machining duty cycles.
Q: Does the KDA 3.1-150-3-LQI-U1 Spindle Drive support feedback options?
A: es, the drive provides incremental encoder output, allowing spindle position monitoring and integration with diagnostic and process supervision systems.
Q: How does mechanical stiffness improve spindle drive performance?
A: The high stiffness of the spindle drive ensures robust response to sudden load changes, improving accuracy and stability in high-precision machining tasks.
