Product Description:

The KDA 3.1-050-3-APS-W1 is a spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. As a member of hardware Series 3, the unit converts a regulated 300 VDC bus into three-phase output for high-speed machining spindles while supervising motor feedback through its primary encoder channel. It supports a second encoder input so integrators can wire an additional spindle or auxiliary motor sensor for synchronized motion control tasks common in CNC and transfer lines.

The drive draws power from a 300 VDC intermediate circuit, and this supply is highlighted at 300 VDC. Continuous motor demand is covered by its 50 A rated current, a figure that defines compatible motor frame sizes and cable gauges. Thermal energy is extracted by a Mounted Heatsink Blower; airflow is imposed by the device’s Forced Cooling design so cabinet heat does not impair current handling. The blower itself operates from an auxiliary source of 220V/50-60Hz, allowing it to run whenever the main DC link is energized. Speed commands arrive as an Analogue reference, enabling straightforward voltage or current loop integration with legacy CNC controllers while still allowing fine resolution through the drive’s internal converters.

Environmental limits are defined by an operating window of 5 to 45 Degrees Celsius; component derating is unnecessary within this span when airflow is unobstructed. Installation altitude is approved up to 1000M above sea level, ensuring the blower retains enough air density for proper heatsink exchange in most plant locations. For host communication or diagnostic scripting, an integrated Serial interface (RS 232 C) is provided; its parameter set covers gain adjustment, fault logging, and encoder configuration so commissioning laptops can complete tuning without additional field-bus cards.