KDA 2.1-150-3-DPI-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-150-3-DPI-W1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 150 Amps and a DC supply voltage of 300 VDC. It uses forced cooling with a mounted heatsink blower that operates at 220V and 50-60Hz, and supports digital speed command values at 16 bit parallel. The unit offers incremental encoder output as an additional interface and includes a second encoder input for spindle or motor feedback.
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Product Description:
Bosch Rexroth Indramat builds the KDA 2.1-150-3-DPI-W1 as part of its KDA Spindle Drives series. This spindle drive supplies controlled three-phase power to machine-tool spindles, translating digital velocity commands from a CNC or PLC into precise motor currents for high-speed cutting, drilling, or grinding operations. Mechanical derating is unnecessary up to 1000 m above sea level, which covers typical industrial elevations while preserving the stated cooling and voltage margins.
The power section is fed by a DC bus rated at 300 VDC, so the connected supply or intermediate circuit must sustain that level under load. Continuous motor demand is supported by a maximum output of 150 A, giving the unit headroom for rapid acceleration of large spindle masses. Thermal energy created by those currents is removed through forced cooling; a heat sink blower mounted on the housing pushes air across the fins rather than relying on passive convection. That blower itself needs an external AC feed of 220 V 50–60 Hz, isolating its power path from the drive electronics. Reliable operation is specified for ambient temperatures between 5 to 45 °C, allowing installation on most factory floors without supplemental climate control.
Control data reaches the regulator over a Digital (16 bit parallel) speed command bus, permitting fine resolution of setpoints across the full spindle range. For position-related tasks, the front panel exposes an incremental encoder output that mirrors spindle motion to external controllers or displays. A separate port accepts a second feedback device for spindle feedback or an auxiliary motor transducer, so process integrity can be maintained when a different encoder format is required.
Frequently Asked Questions about KDA 2.1-150-3-DPI-W1:
Q: What cooling method does the KDA 2.1-150-3-DPI-W1 spindle drive use?
A: The KDA 2.1-150-3-DPI-W1 uses a mounted heatsink blower for forced cooling.
Q: What is the required DC supply voltage for the KDA 2.1-150-3-DPI-W1?
A: This spindle drive operates on a DC supply voltage of 300 VDC.
Q: What is the rated current capability of the KDA 2.1-150-3-DPI-W1 spindle drive?
A: It supports a rated current of 150 A for high-capacity spindle operations.
Q: What is the maximum permissible installation elevation for this spindle drive?
A: The KDA 2.1-150-3-DPI-W1 is designed to be installed at elevations up to 1000 meters above sea level.
Q: What type of speed command value input does the KDA 2.1-150-3-DPI-W1 support?
A: A digital 16 bit parallel speed command value can be used with this drive.
