KDA 3.1-050-3-AY0-U1
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The KDA 3.1-050-3-AY0-U1 servo drive features a rated output current of 50 amps, air cooling, a protection class of IP20, and dimensions of 390 mm in height and 100 mm in width. As part of the KDA Spindle Drives series by Bosch Rexroth Indramat, it operates with an input voltage of AC 3x 230/400V.
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Product Description:
The KDA 3.1-050-3-AY0-U1 Spindle Drive features a foundational hardware layout (Design 1) suited for standard applications and seamless integration with existing systems. The design of this Bosch constructed module allows auxiliary, synchronous encoder inputs and provides accurate speed feedback, coordinated control, suitable for advanced automation configurations that need reliable performance and compatibility with AS 35 based systems.
The KDA 3.1-050-3-AY0-U1 spindle drive uses an active air cooling mechanism where a blower fan directs air over a metal component to manage thermal buildup and instead of relying on natural convection, it ensures temperature regulation through continuous airflow. The internal DC voltage level supplied to the drive’s power section is 300 volts which feeds the inverter stage that controls the motor and it belongs to the 3rd series of its product family which includes upgrades in hardware architecture, software functionality or thermal performance. It has the capacity to handle a constant electrical load of 50 amperes that is the maximum sustained load that it can deliver to the spindle motor and it works with common mains frequencies used around the world that range between 50 hertz or 60 hertz. It provides no alternative communication or control connection which means it does not offer additional ports or connection to optional plug-ins, diagnostics, or interaction with any other systems other than the primary control inputs.
This KDA 3.1-050-3-AY0-U1 spindle drive is governed by an analog voltage signal between -10 to +10 volts which provides smooth and continuous control that often comes from a CNC controller or programmable logic device. Its dedicated cooling fan for the heatsink operates on a 115-volt alternating current power source which suggests it requires a separate low-voltage AC line that is often found in North American electrical environments.
Frequently Asked Questions about KDA 3.1-050-3-AY0-U1:
Q: How does the analog +/-10V speed command improve motor control in the KDA 3.1-050-3-AY0-U1?
A: The analog signal allows for smooth and continuous speed modulation. It enables finer control of motor dynamics during spindle acceleration and deceleration.
Q: Why is forced-air cooling important in the Bosch KDA 3.1-050-3-AY0-U1 spindle drive?
A: Forced-air cooling maintains safe thermal levels during heavy or continuous motor use. It also prolongs the lifespan of internal components under load.
Q: What advantage does the 300V DC bus provide in the KDA 3.1-050-3-AY0-U1 drive?
A: It ensures efficient power conversion and delivery to the spindle motor. This voltage supports stable operation even during voltage dips or load variations.
Q: How do auxiliary encoder inputs benefit synchronization in the KDA 3.1-050-3-AY0-U1 unit?
A: They enable precise coordination with external axes or systems. This is particularly useful for C-axis control in CNC machines.
Q: Can the Bosch KDA 3.1-050-3-AY0-U1 drive operate in regions with 60Hz power supply?
A: Yes, its 50–60Hz frequency compatibility allows it to function globally. It's ideal for multinational industrial environments.
