KDA 2.1-050-3-AYS-U1

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The Bosch Rexroth Indramat KDA 2.1-050-3-AYS-U1 spindle drive is part of the KDA Spindle Drives series and supports panel mounting. Featuring air cooling and a protection type of IP20, it operates within 0°C to +45°C. The drive runs on 3 x 380-480 V AC input voltage with a rated output current of 50 Amps.

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Product Description:

The KDA 2.1-050-3-AYS-U1 Spindle Drive by Bosch is a compact and high performance solution that delivers precision speed control and reliable performance in various automated systems. This module is part of the Series 2 and it has Design 1 that presents its generation and configuration within the product line.

This KDA 2.1-050-3-AYS-U1 drive features high stiffness that allows the system to maintain consistent operational accuracy and its rated current is 50 A that supports consistent power flow during high speed rotation. Its speed command value is analog 10V + /- which makes it easy to interface with suitable control systems as well as its DC bus voltage of 300 volts which makes it feasible to provide a stable energy input during operation period. This module cooling method is forced cooled by heatsink blower that ensures the unit maintains optimal operating temperature and its auxiliary encoder input is with auxiliary and synchronous inputs due to AS 35 and Spee that improves system feedback and synchronization. It includes an auxiliary interface that possesses a serial interface that permits communication with external diagnostic or control devices and each specification can be configured to operate within the mechanical and electrical architecture of the unit to provide enhanced control accuracy and reduce system interference.

This KDA 2.1-050-3-AYS-U1 drive is adaptable to various application designs that require stable speed and torque characteristics and its design architecture supports integration flexibility that enables system engineers to match the unit with existing setups. It has a series structure that defines its functional range and compatibility class and that it includes technical elements which conform to normal industrial automation practices.

Communication Interface
SERCOS, Analog, Parallel
Cooling Method
Air cooled
Feedback Supported
Resolver, Encoder
Frequency
50/60 Hz
Input Voltage
3 x 380-480 V AC
Mounting
Panel mounting
Operating Temperature
0°C to +45°C
Protection Type
IP20
Rated Output Current
50 A
Rated Power
Approximately 35 kVA
  • KDA 210503AYSU1

Frequently Asked Questions about KDA 2.1-050-3-AYS-U1:

Q: How does high stiffness improve the performance of the KDA 2.1-050-3-AYS-U1 drive?

A: High stiffness helps reduce mechanical vibration and enhances motion precision. This ensures better positioning and control for demanding spindle applications.

Q: Why is a forced heatsink blower cooling method used in this Bosch spindle drive?

A: The forced cooling system maintains thermal stability during continuous operation. It prevents overheating in high-speed or high-load conditions.

Q: What benefits does the analog ±10V speed command offer in the KDA 2.1-050-3-AYS-U1?

A: Analog ±10V allows seamless integration with many legacy and modern control systems. It provides direct and responsive speed control.

Q: How does the 300V DC bus voltage affect drive performance in the KDA 2.1-050-3-AYS-U1?

A: A 300V DC bus ensures sufficient voltage headroom for stable torque output. It helps maintain efficiency under load variations.

Q: What is the role of the RS 232 C serial interface in the KDA 2.1-050-3-AYS-U1?

A: It allows direct communication with external diagnostic tools or PLCs. This simplifies system monitoring and parameter adjustments.


Internal Product Review

  • ‘‘The KDA 2.1-050-3-AYS-U1 spindle drive by Bosch delivers robust performance and precision. It offers high stiffness, 50 A rated current, analog ±10 V speed command, 300 V DC bus and forced heatsink blower cooling. It is widely used in CNC machine tools for spindle positioning and C‑axis control.’’

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