KDA 3.1-100-3-LYS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-100-3-LYS-W1 is a spindle drive in the KDA Spindle Drives series with a rated current of 100 Amps and a DC supply voltage of 300 Volts. It features forced cooling through a mounted heatsink blower, operates in ambient temperatures from 5 to 45 degrees Celsius, and is equipped with a serial interface and SERCOS speed command value interface.
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Product Description:
The KDA 3.1-100-3-LYS-W1 spindle drive is manufactured by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. This unit functions as the power and control stage for high-speed machine-tool spindles, turning the drive controller’s commands into regulated three-phase power that maintains constant torque and speed. In automated machining centers, it helps synchronize cutting processes with the programmed toolpath. This arrangement supports stable spindle regulation during acceleration, cutting, and deceleration phases.
It draws its intermediate-circuit energy from a nominal bus of 300 VDC, allowing the inverter section to deliver a continuous motor phase current of 100 A to demanding spindle windings. Thermal load is removed by a mounted heat sink blower, and the airflow is driven by an auxiliary supply of 220 V/50-60 Hz, a voltage kept separate from the power section so the fan remains active even when the DC link is discharged. Because the cooling mode is forced cooling, the drive can maintain rated output across its specified ambient range. Speed references arrive digitally through the SERCOS interface, providing deterministic command values that the control loop converts into precise spindle velocity.
The electronics are specified for surrounding temperatures between 5 to 45 degrees Celsius, and full performance is guaranteed up to 1000 m above sea level, matching typical industrial conditions. Integration with legacy supervisory systems is simplified by a serial interface (RS-232C) that provides diagnostic and parameter channels alongside the fieldbus. For enhanced position verification, the hardware includes a second encoder input and synchronous input, letting the controller reconcile signals from a motor encoder and an external measuring device during high-speed machining. This additional feedback path helps the control system maintain accurate speed and position correlation under changing load conditions.
Frequently Asked Questions about KDA 3.1-100-3-LYS-W1:
Q: What is the rated current for the KDA 3.1-100-3-LYS-W1 spindle drive?
A: The KDA 3.1-100-3-LYS-W1 features a rated current of 100 A, providing high output capability for demanding spindle applications.
Q: What cooling method is used by the KDA 3.1-100-3-LYS-W1?
A: This spindle drive uses a mounted heatsink blower for forced cooling, ensuring continuous operation under heavy loads.
Q: What type of additional interface does the KDA 3.1-100-3-LYS-W1 provide?
A: A serial interface (RS 232 C) is included for communication and data exchange.
Q: What is the operating ambient temperature range for the KDA 3.1-100-3-LYS-W1?
A: The KDA 3.1-100-3-LYS-W1 is designed to operate at ambient temperatures between 5 and 45 degrees Celsius.
Q: How are speed command values provided to the KDA 3.1-100-3-LYS-W1?
A: Speed command values are transmitted to the KDA 3.1-100-3-LYS-W1 via the SERCOS interface.
