KDA 3.1-150-3-DY0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-DY0-W1 is part of the KDA Spindle Drives series and is designed as a spindle drive with a rated current of 150 Amps. This Series 3 spindle drive uses forced cooling with a mounted heatsink blower powered by 220V and operates at a DC supply voltage of 300 VDC. It features a second encoder input and supports digital speed command values in 16 bit parallel format.
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Product Description:
The KDA 3.1-150-3-DY0-W1 is a spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. In an automation cell, it converts regulated DC-link energy from the cabinet into three-phase power for high-speed machining or grinding spindles, while its internal control sections connect to motion controllers that supervise speed and position. By integrating the power stage and control electronics, the unit simplifies panel layout and delivers the dynamic torque response required for precision tool positioning. This arrangement also helps the drive respond quickly to changing spindle loads during acceleration, deceleration, and steady cutting. It is suited to machine tools that require stable spindle control during both speed regulation and positioning moves.
The drive is supplied from a regulated bus at 300 VDC, and this voltage is internally switched to support a continuous output of 150 A, enabling direct operation of large synchronous or induction spindles. Thermal management relies on a heat sink-mounted blower, and that blower is powered from a dedicated 220 V 50–60 Hz AC tap in the cabinet. Airflow is directed across the fin stack, and the housing is built for forced cooling so that waste heat is expelled without external ducting. The separate AC supply for the blower keeps cooling independent of the switched motor output stage.
Operation is permitted in machine rooms where the ambient temperature stays between 5 °C and 45 °C; beyond that range, derating or auxiliary cooling is required. Installations are limited to 1000 m above sea level so that the heat sink blower maintains its intended airflow. For high-resolution feedback loops, the control board provides a second encoder input plus a synchronous strobe, allowing dual-loop spindle positioning. Speed reference data enter the drive in a 16-bit digital parallel format, which avoids the analog offset drift associated with analog signaling.
Frequently Asked Questions about KDA 3.1-150-3-DY0-W1:
Q: What is the rated current for the KDA 3.1-150-3-DY0-W1 spindle drive?
A: This drive operates at a rated current of 150 A, supporting demanding spindle applications.
Q: How is the KDA 3.1-150-3-DY0-W1 spindle drive cooled?
A: It uses a mounted heatsink blower with forced cooling for effective thermal management.
Q: What type of DC supply voltage is needed for this spindle drive?
A: The KDA 3.1-150-3-DY0-W1 requires a DC supply voltage of 300 VDC.
Q: What is the ambient operating temperature range for the KDA 3.1-150-3-DY0-W1?
A: The supported ambient temperature range for this model is 5 to 45 degrees Celsius.
Q: What type of speed command value interface does this spindle drive use?
A: It features a speed command value interface that accepts digital signals in 16-bit parallel format.
