KDA 2.1-100-3-DPS-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 2.1-100-3-DPS-U1 is a spindle drive from the KDA Spindle Drives series with a rated current of 100 Amps and requires a 300 VDC supply voltage. It features a forced cooling system using a mounted heatsink blower and includes a serial interface (RS 232 C). Designed for operation at ambient temperatures between 5 and 45 degrees Celsius, it can be installed at elevations up to 1000 meters above sea level.
Internal Product Review
The KDA 2.1-100-3-DPS-U1 spindle drive from Bosch Rexroth Indramat delivers consistent performance with a rated current of 100 A and a DC supply voltage of 300 VDC. Forced cooling is provided via a mounted heatsink blower using a 115V/50-60Hz AC source, ensuring stable operation in demanding environments. This drive stands out for its advanced serial interface (RS 232 C) and versatile digital speed command value management.
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Product Description:
The KDA 2.1-100-3-DPS-U1 spindle drive is manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. It is a Series 2 module intended to control high-speed machine-tool spindles by converting a fixed DC bus into regulated three-phase output for metal-cutting and drilling operations. The housing combines current regulation, fault monitoring, and feedback handling so it can serve as the axis-specific power stage in an Indramat modular rack. This arrangement allows the drive to respond to changing spindle demand during continuous machining duty.
A DC bus link of 300 VDC supplies the power section inside the unit. The controller is rated for 100 A of continuous output so compatible motors can receive full torque at low speed. A digital 16-bit parallel command value provides the speed reference, allowing numerically controlled systems to transmit velocity data without analog drift. Thermal energy is carried away by a blower powered from an auxiliary line of 115 V at 50/60 Hz. Because the heat sink receives pressurized air, the drive uses forced cooling to control semiconductor temperature during sustained spindle duty. A second encoder input is also available, so spindle orientation or an additional motor channel can be handled without an external module.
For cabinet layouts, the active cooling element is a mounted heatsink blower, which reduces the need for separate airflow hardware around the module. Communication with diagnostic terminals or CNC controls is possible through a serial RS-232C interface, which supports parameter access and fault tracking. The permissible ambient range is 5 to 45 °C, and the unit may be installed up to 1000 m above sea level before derating is required. Operation beyond these limits can reduce cooling effectiveness and available output current.
