KDA 3.1-150-3-A0D-W1
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The KDA 3.1-150-3-A0D-W1 spindle drive is air-cooled and features a rated current of 150 A. Manufactured by Bosch Rexroth Indramat as part of the KDA Spindle Drives series, it operates at a supply voltage of 400 V AC and weighs approximately 30 kg. The drive offers IP20 protection.
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Product Description:
The KDA 3.1-150-3-A0D-W1 is a spindle drive from Bosch Indramat. It is from the series of KDA Spindle Drives. The unit combines rated power handling with precise command interfaces.
The KDA 3.1-150-3-A0D-W1 drive has a DC bus voltage of 300 V. It delivers a rated current of 150 A and a continuous current of 90 A. The speed command uses an analog ±10 V input. It has a digital position command 16-bit parallel interface. The auxiliary encoder input is not available in this arrangement. The blower power supply is 220 volts at 50-60 Hz. A heatsink blower provides forced cooling. The cooling air flow rate is 32 l/s at 30 Pa. The maximum air velocity at the heatsink is 3-4 meters per second. Heat is dissipated beyond the cage to ensure optimal operation. The drive weighs 17.4 kg, while the blower unit adds 4.2 kg. The mounting accessory set weighs 1.7 kg and provides installation support. The allowed orientation is vertical, with grounding bolts on top. The speed control range begins at 0.0005 rpm and extends to maximum speed. Positioning resolution is < 1/360,000 revolutions for exceptional accuracy. The power supply consumes 1.6 A from the +24 V load voltage. It also requires 160 mA from a ±15 V measurement voltage. The continuous shaft power compatibility spans between 3 and 22 kW.
The KDA 3.1-150-3-A0D-W1 is designed to operate reliably in a variety of situations. The operating temperature ranges from +5 to +45 °C, with a maximum of +55 °C under derated settings. Storage and transport temperatures range from -30°C to +85°C. Without derating, installation elevation might be as high as 1000 m. Class F regulations allow for a maximum relative humidity of 70%. DIN 40 050 defines the protection category as IP10. The drive is controlled by a normal motor feedback connection.
Frequently Asked Questions about KDA 3.1-150-3-A0D-W1:
Q: How does the forced cooling by heatsink blower improve the KDA 3.1-150-3-A0D-W1?
A: The forced cooling ensures stable operation under high current loads. It helps prevent overheating and maintains long-term reliability.
Q: Why does the KDA 3.1-150-3-A0D-W1 use a digital position command interface?
A: The 16-bit parallel digital interface allows fast position communication. This ensures precise control in spindle drive applications.
Q: Why is a ±10 V analog speed command input used in the KDA 3.1-150-3-A0D-W1?
A: It provides a simple and reliable way to control motor speed. The signal is widely supported in automation systems.
Q: Why does the KDA 3.1-150-3-A0D-W1 require a cooling air flow of 32 l/s?
A: The airflow maintains consistent blower performance under rated loads. It ensures the drive can operate at peak efficiency.
Q: Why is a maximum air velocity of 3–4 m/s specified for cooling?
A: It allows efficient air circulation across the heatsink. This ensures optimal cooling without stressing blower components.
