KDA 3.1-050-3-AQS-W1
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The Bosch Rexroth Indramat KDA 3.1-050-3-AQS-W1 is a digital servo amplifier from the KDA Spindle Drives series, featuring cabinet panel mounting. It offers a continuous current of 50A and operates with an input voltage of 3 x 230/400V AC ±10%. Additionally, it supports SERCOS Interface fieldbus and weighs approximately 11 kg.
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Product Description:
The KDA 3.1-050-3-AQS-W1 Spindle Drive of Bosch serves as the primary power controller for a machine’s rotational axis which is typically used to regulate and drive the motor responsible for spinning tools or components in CNC machinery or similar equipment.
The KDA 3.1-050-3-AQS-W1 drive is powered by a globally compatible 220V AC supply and ensures reliable thermal management through an actively cooled heatsink blower operating at 50–60Hz. It relies on active airflow generated by a dedicated fan to dissipate thermal buildup in a way that a heatsink absorbs the generated heat and the blower pushes ambient air across its surface to enhance heat removal. It communicates with other system components using the SERCOS protocol which is a real time, digital interface designed for high-speed and synchronized data exchange in industrial automation environments. It converts internally input AC power into a stable 300-volt direct current, which is used as the main power supply for motor operation. It is also included with an additional channel such to accept feedback signals from an external position sensor and it supports encoders that output sinusoidal signals with a 1-volt amplitude.
This KDA 3.1-050-3-AQS-W1 drive is capable of operating over a wide spectrum of rotational speeds while maintaining a steady power output and it can handle an electrical current up to 50 amperes. It includes a legacy-style serial communication port (RS-232-C standard) which allows it to connect with computers or controllers for setup, diagnostics or monitoring tasks via simple, point to point data transfer. Its spindle’s rotation speed can be controlled via an analog input signal ranging from minus 10 to plus 10 volts and this range typically corresponds linearly to the desired motor speed and offers intuitive and adjustable control.
Frequently Asked Questions about KDA 3.1-050-3-AQS-W1:
Q: Why is the analog ±10V input important for speed control?
A: The ±10V analog input allows fine-tuned control of motor speed. It enables seamless integration with older systems using analog signals.
Q: How does the 50 A rated current impact the performance of KDA 3.1-050-3-AQS-W1?
A: A 50 A current capacity ensures the drive supports high-torque motors under load. This prevents overheating and enhances longevity in demanding operations.
Q: What advantage does a 1V sinusoidal encoder input provide?
A: It improves positional accuracy by offering high-resolution feedback. This makes it ideal for precision machining and tool positioning.
Q: Why does the KDA 3.1-050-3-AQS-W1 use a heatsink blower for cooling?
A: The active blower improves thermal efficiency during continuous operation. It prevents performance degradation from overheating under prolonged load.
Q: How does the 300 V DC bus benefit the KDA 3.1-050-3-AQS-W1 spindle drive?
A: A 300 V DC bus stabilizes internal power delivery for efficient motor operation. This ensures reliable speed and torque consistency.
