KDA 2.1-100-3-D00-U1

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The KDA 2.1-100-3-D00-U1 is a servo drive manufactured by Bosch Rexroth Indramat. Part of the KDA Spindle Drives, this unit features air-cooled fan cooling and a nominal input voltage of 3 x 380/400/460 V AC ±10%. The drive has a rated output current of 100 amps and weighs approximately 30 kg.

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Product Description:

The KDA 2.1-100-3-D00-U1 is a motor drive from Rexroth Indramat that operates with a DC bus voltage of 300 V and has a rated current of 100 A. It features forced air cooling that is supported through a heatsink blower powered by a 115 V AC supply at 50 – 60 Hz frequency, to ensure efficient heat dissipation.

The KDA 2.1-100-3-D00-U1 drive is presented in a compact physical size of 390 × 110 × 205 mm and it supports installation in a control cabinet due to its IP10 rated protection that safeguards only from large objects. It is designed for use up to 328.15 K, along with a maximum installation elevation of 3300 ft. It supports a digital 16-bit parallel speed command input and it uses a motor feedback connection to monitor rotor position for ensuring precise control. This KDA 2.1 drive does not comes equipped with auxiliary encoder input and additional interfaces but supports high-resolution feedback for secondary motor and optional interfaces if needed for enhanced control. The drive’s terminal designations and connections include X1 for the motor power connection, X2 for control inputs, X3 for motor feedback and X4 for the speed command input. Its blower bus connection is designated at X8 and the terminal for the DC link bus is at X9.

The KDA 2.1-100-3-D00-U1 drive supports 70 A of all time current at the output and it operates within a voltage range of ±15.0 V for measuring, with a current consumption of 160 mA. It is equipped with a 24V control voltage input for the auxiliary systems as well. The unit comes with dedicated terminals X10 for grounding and its spindle as well as C-axis operations in CNC machines ensures high precision and reliability for long-term industrial use.

Communication Interface
Analog/digital interface
Control Mode
Current control (torque mode)
Cooling Method
Air cooled (fan)
Dimensions (h X W X D)
445 mm x 328 mm x 242 mm
Feedback Type
Resolver
Frequency
50/60 Hz
Measuring voltage
15 V
Module Version
2.1
Nominal Input Voltage
3 x 380/400/460 V AC ±10%
Number Of Axis
3
Power Supply
Three-phase
Protection Class
IP20
Rated Output Current
100 A
Type
Servo Drive
Weight
30 kg (approx.)
  • KDA 211003D00U1

Frequently Asked Questions about KDA 2.1-100-3-D00-U1:

Q: How does the 16-bit parallel speed input benefit the KDA 2.1-100-3-D00-U1 drive?

A: It provides higher resolution control signals for more accurate speed regulation. This helps maintain precision in CNC spindle and axis control applications.

Q: Why is the DC bus voltage of 300 V important in this drive?

A: The 300 V DC bus ensures stable power delivery for high torque operations. It helps the KDA 2.1-100-3-D00-U1 handle demanding industrial loads efficiently.

Q: What role does the motor feedback connection play in this drive?

A: It continuously monitors rotor position for accurate motion synchronization. This enhances machine performance and reduces deviation in automated tasks.

Q: How does the 24V control voltage input support auxiliary systems?

A: It provides independent low-voltage power for control electronics and safety circuits. This ensures reliable start-up and safe operation even during load fluctuations.

Q: Why is forced air cooling with a blower essential for this model?

A: It dissipates heat generated during continuous high-current operation. The blower keeps components within safe thermal limits, preventing premature failure.


Internal Product Review

  • ‘‘The KDA 2.1-100-3-D00-U1 is a spindle drive designed for machine operations. It offers compact cabinet installation, forced air cooling and a 16-bit parallel speed command interface for accuracy. This model is widely used in precision machining, metal cutting and spindle control systems for automation.’’

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