KDA 2.1-050-3-LYS-U1
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The Bosch Rexroth Indramat KDA 2.1-050-3-LYS-U1, from the KDA Spindle Drives series, is a Drive Controller rated for 50 Amps with panel mounting. It runs on a 400V AC three-phase power supply and features internal cooling with a built-in fan. The unit has an IP20 protection class and operates between 0°C to 45°C.
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Product Description:
The KDA 2.1-050-3-LYS-U1 Spindle Drive is designed for reliable industrial performance as it features a first generation design, robust cooling and versatile connectivity. This module from Bosch Rexroth Indramat functions safely between +5 °C and +45 °C and it integrates an RS-232-C interface for seamless monitoring and control.
The KDA 2.1-050-3-LYS-U1 spindle drive relies on a blower mounted to the heat sink to push air across its surfaces which ensures that any generated heat is removed quickly. The blower that provides cooling is powered from an AC source rated at 115 V with compatibility for both 50 Hz and 60 Hz power systems. The drive can safely be stored or transported in a wide thermal span from deep cold of -30 °C up to hot conditions of +85 °C. It is designed to handle a continuous current of 50 amperes during normal use which indicates the amount of electrical load it can sustain without stressing the system. It supports additional encoder connections that enables both secondary feedback and synchronized input signals which allows precise coordination with other systems for accurate speed. Its protection class of IP 10 according to the DIN 40 050 standard indicates basic safeguarding against large objects. It is part of the second series or generation in its product family.
This KDA 2.1-050-3-LYS-U1 spindle drive has an acceptable level of relative air defined by F in accordance with DIN 40 040 which specifies the environmental humidity conditions under which it will continue to function correctly. It uses the SERCOS communication which is a standardized digital interface for real time control to manage its rotation speed. It has a direct current link voltage of 300 V which feeds the drive and forms the basis for supplying power to the motor.
Frequently Asked Questions about KDA 2.1-050-3-LYS-U1:
Q: How does the forced-air heatsink cooling benefit the drive?
A: The blower directs airflow over heat-dissipating fins, removing thermal energy efficiently. This prevents overheating, enabling continuous high-current operation without derating performance.
Q: Why is a 115 V/50–60 Hz blower supply significant?
A: It means the cooling fan can operate reliably on standard low-voltage AC power in many regions. This simplifies installation without needing special power converters.
Q: Can the KDA 2.1-050-3-LYS-U1 operate in environments hotter than 45 °C?
A: No, exceeding 45 °C during operation risks overheating and reduced service life. For hotter environments, additional cooling or ventilation is required.
Q: What is the purpose of the auxiliary encoder input on this spindle drive?
A: It allows connection of a second feedback device or synchronization with external axes. This improves precision in applications such as contour milling or coordinated multi-axis motion.
Q: How does the RS-232-C port assist in spindle drive use?
A: The serial interface provides a straightforward method to configure parameters, perform diagnostics, or integrate the drive with supervisory control systems. It is especially useful for setup and maintenance tasks.
