Product Description:

The KDA 3.2-100-3-DYS-W1 is a drive module built by Bosch Rexroth Indramat for the KDA Spindle Drives series. As a spindle drive, it receives velocity commands from a CNC controller and converts shared DC-bus energy into three-phase power for high-speed machine-tool spindles. It functions as the electrical link between the cabinet power section and the spindle motor during commanded speed changes. The device is installed alongside axis drives in automation cabinets, where it supports cutting, drilling, and grinding operations. This type of drive is commonly used on machining centers and other equipment where spindle speed must remain steady under changing load.

Internally, the drive operates from a DC link of 300 VDC and can supply up to 100 A of continuous current to the motor. Heat is removed by a mounted heat-sink blower powered from 220 V at 50/60 Hz. During demanding cycles, forced cooling helps keep internal components within their operating range at ambient temperatures from 5 to 45 °C. Because the blower is externally powered, cooling remains separate from the main motor current path. The unit is Series 3 and Version 2, which places it within the later revision group for this drive type.

Control connectivity is entirely digital, which allows the module to work with CNC systems that issue precise spindle speed commands. The primary speed reference enters through a digital 16-bit parallel interface, giving fine resolution for contouring and other speed-sensitive machining tasks. Setup and diagnostic tasks are handled through an RS-232C serial interface, while a second encoder socket can accept incremental feedback and a synchronous trigger. That additional encoder connection is useful in applications that require synchronized spindle signals alongside the main speed command. Full output capability is maintained up to 1000 m above sea level, so the module can be used in most elevated industrial locations without derating.