KDA 2.1-150-3-D00-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-150-3-D00-U1 is part of the KDA Spindle Drives series and is designed as a spindle drive with forced cooling by a mounted heatsink blower. It operates at a rated current of 150 Amps and uses a 300 VDC supply voltage. The drive is built for installation up to 1000 meters above sea level and supports a digital 16-bit parallel speed command value.
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Product Description:
The KDA 2.1-150-3-D00-U1 from Bosch Rexroth Indramat belongs to the KDA Spindle Drives series. It serves as a dedicated spindle amplifier for high-speed machining centers and similar automation cells. Supplied with a regulated DC bus from the system power supply, the drive converts that energy into precise three-phase output for the connected spindle motor and reports operating status back to the machine controller. Within an automation cabinet, it forms the link between numerical control, feedback devices, and the electromechanical spindle, allowing accurate speed regulation during cutting, drilling, or grinding operations.
Power for the drive section comes from a DC link rated at 300 VDC, and the output stages can deliver a continuous armature current of 150 A to the spindle windings. Thermal dissipation is handled by a mounted heat sink blower powered by 115 V/50–60 Hz. The drive uses forced cooling, so air moves directly across the fins and helps stabilize semiconductor temperature. Speed references are accepted through a digital 16-bit parallel interface, allowing the controller to set exact spindle speed without analog conversion noise. This arrangement supports stable spindle operation during machining cycles that demand quick response to speed commands and varying cutting loads.
The unit operates reliably at ambient temperatures from 5 to 45 °C, and installation altitude must not exceed 1000 m above sea level because reduced air density affects blower performance. The drive has no additional interface, and it also lacks a secondary encoder port, so any supplemental feedback must be routed through the primary spindle encoder. The unit is Series 2, indicating the second product generation in the KDA line. Its parameter memory and diagnostic behavior follow that generation for this drive type.
Frequently Asked Questions about KDA 2.1-150-3-D00-U1:
Q: How is the KDA 2.1-150-3-D00-U1 spindle drive cooled during operation?
A: The KDA 2.1-150-3-D00-U1 spindle drive features forced cooling through a mounted heatsink blower.
Q: What is the rated current for the KDA 2.1-150-3-D00-U1 spindle drive?
A: This spindle drive operates with a rated current of 150 A, supporting high-power applications.
Q: What type of speed command value input does the KDA 2.1-150-3-D00-U1 accept?
A: The KDA 2.1-150-3-D00-U1 uses a 16-bit parallel digital speed command value interface.
Q: What is the ambient temperature range for the KDA 2.1-150-3-D00-U1 spindle drive?
A: This drive is suitable for operation in ambient temperatures ranging from 5 to 45 degrees Celsius.
Q: What DC supply voltage does the KDA 2.1-150-3-D00-U1 require?
A: The DC supply voltage required for this model is 300 VDC.
