KDA 3.1-100-3-LP0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-100-3-LP0-W1 is a spindle drive from the KDA Spindle Drives series. It operates with a rated current of 100 Amps and a DC supply voltage of 300 VDC, using a mounted heatsink blower for forced cooling. The drive features a SERCOS interface for speed command value and supports a second encoder input for spindle or additional motor feedback.
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Product Description:
The KDA 3.1-100-3-LP0-W1 belongs to the KDA Spindle Drives series manufactured by Bosch Rexroth Indramat. As a spindle drive, it converts regulated DC power into three-phase motor power and provides velocity control for machine-tool spindles and similar high-speed axes in automated cells. The unit communicates with motion controllers over the SERCOS fieldbus, allowing a CNC or PLC to send digital speed commands while the drive manages current regulation and motor protection in real time. This arrangement supports stable speed control during cutting, drilling, and milling operations where spindle load can change quickly.
This model is rated for 100 A of continuous output current, so it can energize large-frame spindle motors without saturating its power stage. The internal DC link must be supplied with 300 VDC, a level typically provided by a shared supply module in multi-axis cabinets. Thermal energy from the IGBT stack is removed by a mounted heat sink blower powered from an auxiliary 220 V/50–60 Hz AC source; this forced cooling keeps semiconductor temperatures within allowable limits during long cutting cycles. Because the drive operates from a regulated DC source, it fits cabinet layouts that distribute bus power to several axes from one supply section. The drive also accepts a secondary encoder channel that can be assigned to spindle feedback or additional motor feedback for functions such as oriented stop or rigid tapping.
The drive can operate at ambient temperatures from 5 to 45 °C and at elevations up to 1000 m above sea level without derating. Speed commands enter through the SERCOS interface, which avoids analog reference noise and separate command wiring. When supplementary serial or parallel bridges are not required, the no additional interface option configuration keeps the hardware layout simple. The drive follows Series 3 design conventions, so its connector layout and diagnostic LEDs match other third-generation KDA units in the same platform. This helps maintain a consistent physical arrangement across related drive modules.
Frequently Asked Questions about KDA 3.1-100-3-LP0-W1:
Q: What is the rated current of the KDA 3.1-100-3-LP0-W1 spindle drive?
A: The KDA 3.1-100-3-LP0-W1 spindle drive operates with a rated current of 100 A.
Q: What DC supply voltage does the KDA 3.1-100-3-LP0-W1 use?
A: This spindle drive has a DC supply voltage of 300 VDC, supporting industrial spindle applications.
Q: What type of cooling method is used in the KDA 3.1-100-3-LP0-W1 spindle drive?
A: The KDA 3.1-100-3-LP0-W1 is cooled using a mounted heatsink blower and operates with forced cooling.
Q: How are speed command values set for the KDA 3.1-100-3-LP0-W1?
A: Speed command values are set via the SERCOS interface on this spindle drive model.
Q: What is the maximum installation elevation for the KDA 3.1-100-3-LP0-W1?
A: The KDA 3.1-100-3-LP0-W1 supports a maximum installation elevation of 1000 meters above sea level.
