KDA 3.1-050-3-DYS-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 3.1-050-3-DYS-U1 is a spindle drive from the KDA Spindle Drives series, with a rated current of 50 Amps and a DC supply voltage of 300 VDC. It uses forced cooling via a mounted heatsink blower powered by a 115V AC source and supports operation in ambient temperatures from 5 to 45 degrees Celsius. The drive features a serial RS 232 C interface and a digital 16-bit parallel speed command value, with a second encoder input and synchronous input.
Internal Product Review
The KDA 3.1-050-3-DYS-U1 spindle drive from Bosch Rexroth Indramat offers reliable performance with a rated current of 50 A and operates on a steady 300 VDC supply voltage. The integrated forced cooling system, utilizing a mounted heatsink blower, ensures consistent temperature regulation in demanding environments. This drive stands out for its combination of high current handling and precise digital speed command value.
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Product Description:
The KDA 3.1-050-3-DYS-U1 is a modular spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. It converts regulated DC bus energy into controlled three-phase output for high-speed motorized spindles used in CNC machining centers and other automated machine tools. The drive works with Indramat supply modules and motion controllers, providing closed-loop speed regulation and torque delivery for milling, drilling, and grinding axes. Its modular format also supports installation in cabinet-based drive systems where the spindle axis must operate with coordinated machine motion.
Internally, the power section is designed for a DC link of 300 VDC, and the inverter can deliver a continuous phase current of 50 A to the spindle motor. Heat from the power semiconductors is removed through a mounted heat sink ventilated by an auxiliary blower powered by 115 V at 50/60 Hz. This arrangement provides forced cooling, which helps maintain stable operating temperatures during extended high-speed cutting cycles. The command circuit receives the target velocity over a 16-bit digital parallel channel. Parameter access and diagnostic communication are available through a front-panel RS-232C serial interface.
For correct operation, the drive must be installed where the ambient temperature stays within 5 °C to 45 °C. The installation altitude must not exceed 1000 m. If either limit is exceeded, the permissible current is reduced or additional cooling is required. Feedback capability is enhanced by a second encoder input with a synchronous input, which allows the controller to compare spindle position data from two sources or align spindle orientation with external events. These feedback paths support accurate spindle coordination during orientation, speed matching, and timing-dependent machine sequences.
