KDA 2.1-050-3-LP0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-050-3-LP0-W1 is a spindle drive from the KDA Spindle Drives series. It features forced cooling with a mounted heatsink blower running on 220V at 50-60Hz and is designed for installation at elevations up to 1000 meters above sea level. The unit operates with a rated current of 50 Amps and a DC supply voltage of 300 VDC.
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Product Description:
The KDA 2.1-050-3-LP0-W1 is a spindle drive made by Bosch Rexroth Indramat for machine-tool cells that require accurate spindle control. It belongs to the KDA Spindle Drives series and works as the power stage between a shared DC link and the motor, providing closed-loop speed and torque regulation for drilling, milling, and grinding heads. The unit installs in a modular rack slot and mates with an external heat sink to help keep cabinet temperatures stable during sustained machining cycles. It also supports digital command channels so a CNC controller can send setpoints while the internal regulator manages current and speed. Because spindle demand can change quickly during cutting, the regulator helps maintain stable rotation under varying load conditions.
The drive operates from a common rail of 300 VDC, and the inverter can supply a continuous phase current of 50 A to the connected spindle motor. Thermal load is managed by a mounted heat sink blower, and that fan is powered from a separate 220 V at 50/60 Hz source so cooling can continue even when the DC link is off. Air movement uses forced cooling to pull air across the fin stack and exhaust it from the assembly. A separate blower supply also helps remove residual heat after the power stage is shut down. No additional interface option board is installed, so standard backplane connections are used while a second encoder input remains available for spindle position feedback or an auxiliary motor.
Command data is exchanged through the SERCOS interface, allowing deterministic cycle timing when the unit is connected to compatible motion controllers. Operation is permitted in ambient temperatures from 5 to 45 °C, and installation is allowed up to 1000 m above sea level without derating. The drive is Series 2, so it must be matched with the correct parameter set for that generation. The available encoder input supports high-resolution feedback without requiring an extra slot, and the standard backplane arrangement keeps external wiring limited to the required system connections.
Frequently Asked Questions about KDA 2.1-050-3-LP0-W1:
Q: What cooling method does the KDA 2.1-050-3-LP0-W1 utilize?
A: The KDA 2.1-050-3-LP0-W1 spindle drive uses a mounted heatsink blower for effective forced cooling.
Q: What is the rated current of the KDA 2.1-050-3-LP0-W1 spindle drive?
A: This spindle drive operates with a rated current of 50 A.
Q: What is the maximum installation elevation for the KDA 2.1-050-3-LP0-W1?
A: The maximum allowable installation elevation for this model is 1000 meters above sea level.
Q: What DC supply voltage is required for the KDA 2.1-050-3-LP0-W1?
A: The KDA 2.1-050-3-LP0-W1 accepts a DC supply voltage of 300 VDC.
Q: What type of speed command interface does the KDA 2.1-050-3-LP0-W1 use?
A: Speed command values for this drive are communicated via a SERCOS interface.
