KDA 3.1-150-3-L0D-U1
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The Bosch Rexroth Indramat KDA 3.1-150-3-L0D-U1 is part of the KDA Spindle Drives Series and functions as a Servo Amplifier with internal fan cooling. It features an IP20 protection class, operates on 3 x 400 V AC input voltage, and supports both analog and digital communication interfaces.
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Product Description:
The Bosch Rexroth KDA 3.1-150-3-L0D-U1 is a spindle drive that supports a 300 VDC input from the DC bus. The rated current for this spindle drive is 150 A. It delivers a continuous current output of 90 A. The +24V control bus supports a load current of 1.6 A. The housing has an IP10 protection level according to DIN 40050.
This KDA 3.1-150-3-L0D-U1 spindle drive uses forced air cooling with a built-in heatsink blower. The airflow produced by the blower reaches 32 liters/sec at 30 Pascals of pressure. The airflow across the heatsink moves at a speed between 3 and 4 meters per second. It functions within a temperature range of +5°C to +45°C. For environments exceeding this range, the drive supports de-rated use up to a maximum of +55°C. The drive can be installed at elevations up to 1000 meters above sea level without power reduction. The KDA 3.1-150-3-L0D-U1 spindle drive meets Humidity Class F under DIN 40040. It can handle up to 70% relative humidity with no condensation. The drive is designed for vertical mounting only, with the grounding bolts positioned at the top. The physical size of the unit is 160 mm wide, 373 mm high, and 345 mm deep, excluding the air duct. The base drive weighs 17.4 kilograms. The optional mechanical mounting set (M1-KD) weighs 1.7 kg.
This KDA 3.1-150-3-L0D-U1 spindle drive features a SERCOS fiber-optic port for speed input commands. It does not include an auxiliary encoder input. A 16-bit digital parallel interface supports external position command signals. There is no incremental encoder feedback or RS-232 serial port. The standard connectivity includes DC bus, control voltage bus, and feedback bus. A 15-pin motor feedback connector is provided. An optional synchronous input (X5a) is available but not supplied with the unit.
Frequently Asked Questions about KDA 3.1-150-3-L0D-U1:
Q: Why is the KDA 3.1-150-3-L0D-U1 spindle drive limited to vertical mounting?
A: The KDA 3.1-150-3-L0D-U1 spindle drive relies on vertical airflow across the heatsink to maintain thermal efficiency. The horizontal mounting would disrupt cooling dynamics and cause hotspots.
Q: How does the KDA 3.1-150-3-L0D-U1 spindle drive respond to elevated humidity?
A: The KDA 3.1-150-3-L0D-U1 spindle drive tolerates 70% relative humidity without condensation. This ensures insulation integrity and prevents signal distortion under moist conditions.
Q: What role does the SERCOS port play in the KDA 3.1-150-3-L0D-U1 spindle drive?
A: The KDA 3.1-150-3-L0D-U1 spindle drive uses SERCOS fiber-optic input for precise velocity control. The interface minimizes signal delay and electrical noise in feedback loops.
Q: Why does the KDA 3.1-150-3-L0D-U1 spindle drive lack an encoder input?
A: The KDA 3.1-150-3-L0D-U1 spindle drive omits encoder input to streamline motion control for speed-regulated spindles. The position feedback must be handled externally by the control system.
Q: How is airflow pressure maintained in the KDA 3.1-150-3-L0D-U1 spindle drive?
A: The KDA 3.1-150-3-L0D-U1 spindle drive uses an integrated blower producing 30 Pa pressure. This maintains uniform flow velocity and ensures effective heat extraction.
