KDA 3.1-150-3-AQS-U1
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The KDA 3.1-150-3-AQS-U1, part of Bosch Rexroth Indramat's KDA Spindle Drives, features air cooling (AQS) and flange mounting (IM B5). It has a rated power of 3.1 kW, torque of 150 Nm, and includes an incremental encoder. The enclosure type is IP54, and it weighs approximately 35 kg.
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Product Description:
Bosch Indramat offers the KDA 3.1-150-3-AQS-U1 Spindle Drive which is designed for accurate and efficient spindle control in industrial automation systems. It is engineered to meet demanding operational requirements while maintaining stable performance. The drive ensures accurate speed regulation for continuous production applications.
The KDA 3.1-150-3-AQS-U1 drive uses an analog speed command input via X4 with 9-pin connecting clamps. The auxiliary interface is a serial RS 232-C connection for data communication. It works with a signal range of ±10 V which provides accurate control signals to the drive system. The permissible maximum ambient temperature is 55 °C. For standard operation at nominal data, the permissible temperature range is +5 to +45 °C. This model belongs to series 3 which provides compatibility with related industrial control hardware. The AC supply for the heatsink blower is 115 V which enables effective cooling during high-duty operation. An auxiliary encoder input is present for enhanced positional feedback and monitoring. The auxiliary encoder input increases control precision during operation. The encoder signal amplitude is 1 V with a sinusoidal signal form which offers smooth and accurate spindle motion control. This configuration improves accuracy in machining and automated processes. The technical design supports integration into existing systems where stable spindle operation is required. The build quality is intended for long service life under consistent workloads.
The KDA 3.1-150-3-AQS-U1 spindle drive is suitable choice for machinery that requires accurate spindle performance, efficient operation and robust industrial integration. Its analog and serial communication interfaces allow flexible control setups. The sinusoidal encoder signal form reduces vibration and improves process accuracy. The integrated blower power supply maintains optimal temperature during high-load tasks.
Frequently Asked Questions about KDA 3.1-150-3-AQS-U1:
Q: Why is the KDA 3.1-150-3-AQS-U1 effective in plants with variable ambient temperatures?
A: Its design supports full nominal performance between +5 °C and +45 °C, and limited operation up to 55 °C, preventing thermal drift that could affect machining tolerances.
Q: How does the analog speed input of ±10 V influence machining precision?
A: The linear voltage-to-speed response allows the spindle to follow fine speed adjustments instantly, helping reduce chatter and improving surface finish in precision cutting applications.
Q: In what way does the auxiliary encoder input enhance spindle performance?
A: It provides high-resolution positional data to the control system, enabling tighter synchronization with CNC commands and more accurate tool positioning during multi-axis operations.
Q: What are common signs that the KDA 3.1-150-3-AQS-U1 spindle drive needs servicing?
A: Irregular spindle acceleration, sudden fault codes during speed changes, or unstable RPM readings often indicate encoder signal degradation, cooling inefficiency, or component wear that requires inspection.
Q: How can downtime be minimized if the drive experiences a sudden encoder failure?
A: The system can be switched to a safe stop mode, allowing operators to secure the workpiece before replacing or repairing the encoder, avoiding scrap parts and spindle damage.
