KDA 3.1-150-3-A00-W1-220
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The Bosch Rexroth Indramat KDA 3.1-150-3-A00-W1-220, from the KDA Spindle Drives Series, is a single-axis spindle drive with a current rating of 150 Amps. It features external cooling with a blower and resolver feedback support. The drive supports analog/digital I/O and SERCOS communication.
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Product Description:
The KDA 3.1-150-3-A00-W1-220 is a compact spindle drive from Rexroth Indramat that is designed for use in automation systems and CNC applications. It provides a rated current of 150 A and a continuous current of 90 A at the output. This drive utilizes forced air cooling through an external heatsink ventilator that operates on a 220 VAC supply to maintain optimal temperatures during operation and it expel excess heat efficiently.
The KDA 3.1-150-3-A00-W1-220 drive measures 133 mm in width, 373 mm in height and 403 mm in depth, while weighs around 17.40 kg. It is designed for vertical mounting to allow efficient heat dissipation and airflow. The drive supports an analog ±10 V speed command input and does not include an auxiliary encoder input or interface. It operates on a 300 V DC bus voltage from a regulated supply source that converts AC to DC for stable spindle operations. The KDA 3.1 drive is composed of multiple terminal points that include X1 for motor power connections, X2 for control inputs, X3 for motor feedback connections, X4 for speed command input, X5 for optional auxiliary encoder input, X6 for additional control interfaces and X8 for the power supply input to the heatsink blower.
The KDA 3.1-150-3-A00-W1-220 drive is classified with an IP10 protection rating, which provides basic protection against dust ingress larger than 50 mm but offers no protection against water or finer dust particles. It utilizes 1.60 mA of current from 24 V load voltage and it supports plug-in terminal for motor NTC thermistor connection. The drive operates effectively in thermal range from +5°C to +45°C, with a maximum permissible value of +55°C under reduced nominal data at a peak altitude of 3280 ft.
Frequently Asked Questions about KDA 3.1-150-3-A00-W1-220:
Q: How does the forced-air cooling in the KDA 3.1-150-3-A00-W1-220 improve performance?
A: The external 220 VAC-driven ventilator maintains lower temperature on power electronics, reducing thermal stress. This enables consistent current delivery and extends component lifespan.
Q: Why is vertical mounting recommended for the KDA 3.1-150-3-A00-W1-220?
A: Its vertical orientation enhances convection airflow over the heatsink, promoting heat dissipation without additional fans. This supports thermal stability especially in tightly confined enclosures.
Q: What advantage does the ±10 V analog speed command input provide?
A: It allows smooth, continuous control of spindle speed via industry-standard voltage signals. Many CNC systems and motion controllers natively support ±10 V, easing integration.
Q: How does running on a 300 V DC bus affect drive efficiency?
A: A high-voltage DC bus lowers current for equivalent power, reducing conductor losses and improving efficiency. It also enhances torque capability under demanding CNC workloads.
Q: What does the IP10 rating mean for the KDA 3.1-150-3-A00-W1-220 in industrial use?
A: The IP10 protects against large solid objects over 50 mm but not fine dust or moisture. Users must incorporate filtering or enclosure if deployed in dusty or humid environments.
