KDA 3.1-150-3-DYI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-DYI-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 150 Amps and a DC supply voltage of 300 VDC. It features forced cooling through a mounted heatsink blower and supports a digital 16-bit parallel speed command value. The drive offers incremental encoder output and a second encoder input with synchronous input, and is suitable for operation at elevations up to 1000 meters above sea level.
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Product Description:
The KDA 3.1-150-3-DYI-W1 spindle drive is manufactured by Bosch Rexroth Indramat for the KDA Spindle Drives series. It is installed between a 300 VDC bus supply and a servo spindle motor to regulate torque and velocity during machining. By accepting a digital speed word from the CNC and returning real-time encoder data, the drive closes the electromechanical loop that holds programmed surface speeds in milling, turning, or grinding centers. Hardware revision 3 also introduces an onboard blower and dual-channel feedback support so a single frame can serve applications that require redundant position verification.
The power stage delivers a continuous output of 150 A to the motor windings while operating from a 300 VDC link. Thermal energy is removed through a forced cooling scheme that relies on a 220 V/50-60 Hz auxiliary supply for the heat sink fan. Internally, the air stream passes over a mounted heat sink to keep semiconductor junctions below their design limit. Speed reference data enters through a 16-bit digital parallel interface, and the control rack carries terminals for a second encoder input so synchronous position data from another sensor can be evaluated without external splitters. These features allow the drive to sustain commanded spindle torque across rapid accelerations and decelerations in multi-axis machining centers.
The permissible ambient range is 5 to 45 °C, and full performance is maintained up to 1000 m above sea level without derating, making cabinet placement straightforward on most factory floors. An incremental encoder output is provided so downstream PLCs or displays can tap real-time speed information without burdening the primary feedback circuit. The cooling assembly uses a heat sink-mounted blower, so installation requires only clearance for the exhaust path and no external ducting.
Frequently Asked Questions about KDA 3.1-150-3-DYI-W1:
Q: What is the rated current of the KDA 3.1-150-3-DYI-W1 spindle drive?
A: The KDA 3.1-150-3-DYI-W1 spindle drive operates with a rated current of 150 A, designed for high-power spindle applications.
Q: How is the KDA 3.1-150-3-DYI-W1 spindle drive cooled?
A: This spindle drive uses a mounted heatsink blower and employs forced cooling to maintain stable temperatures during operation.
Q: What type of speed command value input does the KDA 3.1-150-3-DYI-W1 use?
A: The KDA 3.1-150-3-DYI-W1 supports a speed command input via a 16-bit parallel digital signal.
Q: What is the DC supply voltage requirement for the KDA 3.1-150-3-DYI-W1?
A: The DC supply voltage for the KDA 3.1-150-3-DYI-W1 spindle drive is 300 VDC.
Q: What is the maximum installation elevation for the KDA 3.1-150-3-DYI-W1 spindle drive?
A: The KDA 3.1-150-3-DYI-W1 can be installed at elevations up to 1000 meters above sea level.
