KDA 3.2-100-3-AQD-U1

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The KDA 3.2-100-3-AQD-U1 is a digitally controlled servo amplifier featuring 3.2 A rated output current and a DC link voltage of 300 VDC. Manufactured by Bosch Rexroth Indramat under their KDA Spindle Drives series, it supports a power supply voltage of 3 x 230/400 V AC. The unit offers forced air cooling and an IP20 protection class.

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Product Description:

The Bosch Rexroth manufactures KDA 3.2-100-3-AQD-U1 as a motor control drive that requires DC bus voltage of 300 V. Its maximum current capacity at the output is 100 A and supports 70 A of steady current in continuous operating mode. The drive has a dimension of 373 mm x 390 mm x 150 mm and it weighs 21.3 kg, combined with the blower unit.

The KDA 3.2-100-3-AQD-U1 drive comes with an integrated forced air cooling through a blower unit that is mounted to the external heatsink and it requires a 115V/50-60Hz power supply to operate. The drive is protected by an IP10 rating that safeguards against objects larger than 50 mm but not against water and it functions in environments with up to 70% relative humidity. It manages motor feedback via a 15-pin standard interface and it supports speed command value through analog ±10V. Additionally, the drive includes an auxiliary encoder input for a second motor feedback of digital 16-bit parallel interface. The KDA 3.2 drive features a comprehensive terminal setup for ease of connection and operation. Its X2 terminal is used for control input and provides analog signal outputs, while the X3 terminal handles motor feedback. The X4 terminal is for speed command values of both analog and digital nature and its X5 terminal connects auxiliary encoder inputs.

The KDA 3.2-100-3-AQD-U1 drive is equipped with a fault diagnostics system, which monitors the drive for errors and initiates a shutdown for protection. It possesses a removable AS programming module that stores parameters and firmware to facilitate quick replacements without reconfiguration for minimizing downtime. This unit needs to be mounted vertically with the provided bolts for secure fitting and proper air ventilation.

Auxiliary Encoder Input
Digital 16-bit parallel interface
Blower Unit Weight
4.2 kg
Communication Interface
RS232
Continuous Output Current
3.2 A
Control Mode
Digitally controlled servo amplifier
Cooling
Forced air cooling
Dc Link Voltage
300 VDC
Dimensions (h X W X D)
approx. 380 mm x 90 mm x 300 mm
Feedback System
Resolver or encoder
Output Voltage
3 x 0...300 VRMS
Peak Output Current
10 A (max 5 sec)
Power Supply Voltage
3 x 230/400 V AC (+10%, -15%)
Protection Class
IP20
Rated Output Current
3.2 A
Rated Output Power
1.0 kVA
  • KDA 321003AQDU1

Frequently Asked Questions about KDA 3.2-100-3-AQD-U1:

Q: How does the forced-air cooling benefit the KDA 3.2-100-3-AQD-U1 in high-load conditions?

A: The blower removes heat effectively, maintaining safe operating temperatures under heavy current draw. This prevents thermal shutdowns and prolongs component lifespan.

Q: Why is an auxiliary encoder input included in the KDA 3.2-100-3-AQD-U1?

A: It supports feedback from a second motor or backup encoder to enhance positioning accuracy. This redundant input improves fault tolerance and control precision.

Q: What advantage does the removable AS programming module offer in the KDA 3.2-100-3-AQD-U1?

A: It stores configuration and firmware, allowing tool-free replacement while preserving settings. This minimizes downtime during servicing or swaps.

Q: In what way does the analog ±10 V speed command on the KDA 3.2-100-3-AQD-U1 help in process control?

A: It enables seamless integration with legacy analog systems and variable speed regulation. Operators can precisely adjust motor speed using standard industrial signals.

Q: What role does the 15-pin standard interface play in the KDA 3.2-100-3-AQD-U1?

A: It provides a unified platform for motor feedback and control, simplifying wiring. This standard connector ensures compatibility with automation modules.


Internal Product Review

  • ‘‘The KDA 3.2-100-3-AQD-U1 is a powerful motor control drive. It offers 100 A peak output, 70 A continuous current and integrated blower-based cooling. With both analog ±10 V speed control and 16-bit digital encoder input, it excels in industrial automation—commonly deployed in CNC machinery and conveyor systems.’’

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