KDA 3.2-100-3-APS-U1 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Bosch Rexroth Indramat KDA 3.2-100-3-APS-U1 is part of the KDA Spindle Drives series and is a spindle drive with a rated current of 100 Amps. It features a forced cooling system with a mounted heatsink blower powered by 115V AC, and has a DC supply voltage of 300 VDC. The unit includes a serial interface (RS 232 C) and offers a second encoder input for spindle or additional motor feedback.
Internal Product Review
The KDA 3.2-100-3-APS-U1 spindle drive from Bosch Rexroth Indramat features a high 100 A rated current and supports a 300 VDC supply voltage, making it suitable for demanding spindle applications. Forced cooling with a mounted heatsink blower and a 115V/50-60Hz AC source ensure stable thermal management during operation. The inclusion of a serial RS 232 C interface and second encoder input further enhances system integration and feedback flexibility.
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Product Description:
The KDA 3.2-100-3-APS-U1 is a spindle drive module produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Designed for machine-tool environments, the unit converts a regulated direct-current bus into controlled three-phase output that runs high-speed motorized spindles. By integrating the drive, heatsink blower, and control electronics in a single chassis, it simplifies cabinet layouts and provides the dynamic torque and speed regulation required in automated metal-cutting centers and similar equipment.
Energized by a DC bus of 300 VDC, the drive can deliver a continuous motor phase current of 100 A, allowing rapid acceleration of large spindle inertias. Its heatsink blower is supplied from a single-phase 115 V/50-60 Hz auxiliary line, so the cooling fan remains active even when the main DC link is disabled. Thermal conditions are managed through a mounted heatsink that operates under forced cooling; with this arrangement the internal power semiconductors remain within tolerance across an ambient range of 5 to 45 °C. Correct operation is maintained up to 1000 m above sea level without output derating, meeting typical shop-floor elevation requirements.
Control integration is handled through a serial interface (RS 232 C) that permits parameter loading and diagnostic queries from an external CNC or PLC. The drive responds to a analogue speed command, converting ±10 V references into precise spindle velocity, and it includes a second encoder input so either spindle-mounted sensors or an auxiliary motor encoder can feed back position and speed. These communication and feedback provisions shorten commissioning time and allow tight synchronization between multiple spindles or between the spindle and linear axes during tapping, contour milling, or thread cutting.
