Product Description:

The KDA 3.2-050-3-LYS-U1 belongs to the KDA Spindle Drives series manufactured by Bosch Rexroth Indramat. As a spindle drive, it converts the fixed DC link voltage of a multi-axis supply into a variable three-phase output for high-speed motorized spindles used in machining centers and similar automation cells. This control approach lets the connected spindle respond smoothly to commanded speed changes during cutting, drilling, and positioning sequences. The drive integrates directly with Indramat motion controllers, closes the spindle speed loop, and stores operating parameters internally so recurring operating data remains available after power cycling.

The power section is designed for a continuous output of 50 A while operating from a DC bus rated at 300 VDC. Thermal stability is maintained by a mounted heat sink blower supplied from a separate 115 V/50-60 Hz source; this arrangement provides forced cooling so the unit can sustain full current without derating. Parameter access and diagnostic functions are available through a serial RS-232C interface, which supplements the fiber-optic system bus. The separate blower supply keeps cooling available independently of the main output stage during extended spindle operation.

Motion commands reach the control section over the SERCOS interface, giving the spindle deterministic speed references with 32-bit resolution. The drive supports ambient temperatures from 5 to 45 °C and installation heights up to 1000 m above sea level, which suits typical industrial control cabinets. Feedback flexibility is enhanced by a second encoder input and a synchronous input, allowing simultaneous monitoring of the spindle motor and a workpiece encoder during rigid tapping or spindle-orientation tasks. That arrangement supports coordinated spindle functions in which rotational position must stay aligned with axis movement.