KDA 2.1-050-3-APS-W1

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The KDA 2.1-050-3-APS-W1 spindle drive offers a rated output current of 50 amps, internal air cooling, a protection class of IP20, and a diagnostic LED panel. Part of the KDA Spindle Drives series by Bosch Rexroth Indramat, it supports 3x 400-480 VAC input voltage and weighs approximately 12 kilograms.

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Product Description:

Originating from Indramat’s KDA Spindle Drives range, the KDA 2.1-050-3-APS-W1 with a product designation of KDA guarantees uniform engineering across drive models. The motor’s 50 A rated output current sustains spindle torque under prolonged machining cycles which preserves operational consistency. Single‑axis capability grants focused control over one spindle for simplifying axis tuning and reduces system complexity.

Featuring a 3‑phase, 400–480 VAC and 50/60 Hz input voltage ratings, this becomes compatible with broad industrial supplies which cuts transformer requirements. A 24 VDC control voltage powers internal logic boards which guarantees stable signal processing. Internal air-cooling discards heat via integrated blowers which removes the need for external coolant loops. IP 20 protection rating bars solid objects more than 12 mm which shields circuitry from accidental contact. Analog/Parallel interface enables direct command inputs to accelerate response times. This module also offers LED panel diagnostic display and delivers real‑time status updates which streamline fault detection. Panel‑mounting enclosure design secures the unit within control racks; thus, it maximizes cabinet density. An overload capability of 200% for one-minute permits brief current surges which handles sudden load spikes without shutdown.

It includes Resolver feedback option to provide robust angular position sensing that boosts control accuracy. An operating temperature range of 0°C to +45°C manages common industry environments which obviates extra thermal management. Mass of 12 kg adjusts rugged housing with manageable handling and eases installation. This DC bus voltage of 300 VDC in the KDA 2.1-050-3-APS-W1 model ensures steady intermediate rail support. The heatsink blower operates on 220 VAC, delivering focused cooling to uphold stable thermal conditions. It processes an analog speed command of ±10 V, allowing straightforward input of reference signals to streamline external control setup. Additionally, the auxiliary encoder input supports 1V sinusoidal feedback with an auxiliary RS‑232 C communication interface, enabling a direct diagnostics, streamlining the setup process for faster deployment.

Control Voltage
24 VDC
Cooling Method
Internal air cooling
Diagnostic Display
LED panel
Enclosure Type
Panel mounting
Feedback Type
Resolver
Input Voltage
3x 400-480 VAC, 50/60 Hz
Interface
Analog / Parallel
Number Of Axes
1
Operating Temperature Range
0°C to +45°C
Overload Capability
200% for 1 min
Product Series
KDA
Protection Class
IP 20
Rated Output Current
50 A
Weight
Approx. 12 kg
  • KDA 210503APSW1

Frequently Asked Questions about KDA 2.1-050-3-APS-W1:

Q: Which continuous output current rating does the KDA 2.1-050-3-APS-W1 support?

A: A continuous 50 A output current rating defines the maximum armature current the drive delivers which sustains steady torque during extended machining operations.

Q: How many axes can the KDA 2.1-050-3-APS-W1 control simultaneously?

A: The KDA 2.1-050-3-APS-W1 controls one axis which simplifies configuration for dedicated spindle applications and reduces drive count in single‑spindle CNC setups.

Q: What type of electrical supply does the KDA 2.1-050-3-APS-W1 accept?

A: This spindle drive requires a 3‑phase 400–480 VAC and 50/60 Hz frequency which aligns with global industrial voltage standards and eliminates the need for multiple transformer taps.

Q: Why is a 24 VDC control voltage used in the KDA 2.1-050-3-APS-W1?

A: A 24 VDC control voltage powers internal electronics and logic circuits which ensures noise‑immune signal processing and reliable drive operations.

Q: How does internal air cooling benefit the KDA 2.1-050-3-APS-W1 module?

A: Featuring an internal air cooling circulates ambient air via integrated blowers which removes heat from power components and avoids external coolant maintenance.


Internal Product Review

  • ‘‘This spindle drive KDA 2.1-050-3-APS-W1 blends single‑axis simplicity with IP20 shielding for uninterrupted operation under standard shop conditions. This component’s internal air‑cooling strategy maintains component temperatures during peak spindle demands without external coolant infrastructure.’’

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