KDA 3.1-100-3-DYI-W1 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 3.1-100-3-DYI-W1 is a spindle drive in the KDA Spindle Drives series. It operates with a rated current of 100 Amps and uses a mounted heatsink blower with forced cooling. The drive features a second encoder input, synchronous input, and a digital 16-bit parallel speed command value.
Internal Product Review
The KDA 3.1-100-3-DYI-W1 spindle drive from Bosch Rexroth Indramat delivers impressive performance with a rated current of 100 A and a 300 VDC supply voltage, making it well-suited for demanding spindle operations. Its forced cooling system, utilizing a mounted heatsink blower, ensures efficient thermal management in continuous industrial applications. The incremental encoder output and second encoder input provide enhanced feedback options, making this drive a strong choice for precise motion control.
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Product Description:
The KDA 3.1-100-3-DYI-W1 belongs to the KDA Spindle Drives series manufactured by Bosch Rexroth Indramat. As a spindle drive, it regulates high-speed motor shafts in machining centers and related automation equipment, converting digital speed commands into controlled three-phase power for the connected spindle motor. The unit incorporates an integral heat sink blower, so it can be installed inside a control cabinet without external ducting and still maintain directed airflow across the cooling surfaces.
The drive delivers a continuous output of 100 A, which is the maximum current the power stage can supply to the spindle under rated thermal conditions. Its intermediate circuit operates from a 300 V DC bus, so the upstream supply and regeneration modules must maintain that level for stable operation. The heat sink blower is fed from a separate 220 V at 50/60 Hz source, isolating cooling power from the main DC link and allowing the fan to run during coast-down or standby. Overall thermal management uses forced cooling, and speed references arrive as a 16-bit parallel digital word, which lets the supervising CNC transmit precise commands without analog drift or additional conversion hardware in the command path.
The permissible ambient range is 5 to 45 °C, supporting installation in standard shop floor enclosures where cabinet temperatures remain within normal industrial limits. Performance is maintained up to 1000 m above sea level, after which derating is required because of reduced air density. For feedback distribution to auxiliary controllers, the front panel offers an incremental encoder output, and a separate channel accepts a second encoder input and synchronous input for dual-feedback arrangements such as spindle orientation or master-follower operation without external splitters.
