KDA 2.1-150-3-D00-W1
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The KDA 2.1-150-3-D00-W1 is a servo drive manufactured by Bosch Rexroth Indramat. Part of the KDA Spindle Drives series, it features a continuous current of 150 amps and operates on 3-phase, 230/400V AC input voltage. The drive uses a digital control type and weighs approximately 15 kilograms.
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Product Description:
Bosch Rexroth produces the modular drive KDA 2.1-150-3-D00-W1 that accepts digital 16-bit parallel speed commands. It is built for a rated 150 A of peak output current at a 300 V DC bus supply, while its continuous rating remains at 90 A. This drive is compatible with 2AD asynchronous spindle motors and 1MB frameless motors.
The KDA 2.1-150-3-D00-W1 drive’s 16-bit interface offers 65536 distinct command values for speed control that enables accurate regulation across the entire motor speed range. It uses a primary motor encoder for speed feedback that may be resolver or incremental encoder for position feedback and it does not support an auxiliary encoder input or secondary interface. The encoder signals are processed internally to ensure closed loop control and the unit maintains accurate spindle performance even at high dynamic loads. The KDA 2.1 drive uses microprocessor control to handle monitoring and diagnostics. It connects DC bus input at L+ and L− terminals and the motor output terminals are labeled A1, A2, A3. The unit requires 10 mm² of earthing conductor for proper grounding and its logic I/O uses 24 V. Its control power consumption includes +24 V supply that utilizes up to 1.6 A and ±15 V measuring voltage that uses nearly 160 mA. The mechanical dimension of the drive is 435 mm height, 300 mm width and 65 mm depth.
The KDA 2.1-150-3-D00-W1 drive allows panel mounting installation and its protection class of IP10 makes it suitable for cabinet environments only. It comes with a forced air blower mounted on the heatsink, the blower requires 220 V AC supply at 50 to 60 Hz to provide an airflow of up to 4 m/s for thermal stability. The drive’s digital command interface ensures consistent timing and eliminates analog drift errors.
Frequently Asked Questions about KDA 2.1-150-3-D00-W1:
Q: How does the 16-bit parallel interface benefit the KDA 2.1-150-3-D00-W1 drive?
A: The 16-bit interface provides 65,536 discrete command levels, ensuring highly accurate speed regulation across the motor’s full operating range. This minimizes drift errors compared to analog inputs.
Q: Why does the drive use microprocessor-based monitoring and diagnostics?
A: The microprocessor control enables fast fault detection and system protection while reducing downtime. It also helps the drive handle real-time spindle performance adjustments.
Q: What is the purpose of using a 10 mm² earthing conductor on the KDA 2.1 drive?
A: The 10 mm² earthing conductor ensures low impedance grounding, reducing electromagnetic interference. It also protects sensitive drive electronics from voltage spikes.
Q: Why is forced-air cooling used instead of passive cooling in the KDA 2.1-150-3-D00-W1?
A: The forced-air cooling provides consistent thermal stability even under high load cycles. This allows the drive to maintain its 90 A continuous rating without overheating.
Q: What role does the ±15 V measuring voltage serve in the drive’s operation?
A: The ±15 V supply supports sensor and signal conditioning circuits. It ensures accurate internal measurements for speed and current regulation.
