KDA 3.1-050-3-DPD-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-050-3-DPD-W1 is a spindle drive in the KDA Spindle Drives series with a rated current of 50 Amps and a DC supply voltage of 300 VDC. It features a mounted heatsink blower with forced cooling and operates within an ambient temperature range of 5 to 45 degrees Celsius. The drive includes digital position and speed command value interfaces and a second encoder input for spindle or additional motor feedback.
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Product Description:
The KDA 3.1-050-3-DPD-W1 is a spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. Within an automated machining cell, the unit converts regulated DC bus power into three-phase spindle currents while accepting digital motion commands from the CNC controller. This lets the drive manage the closed-loop speed and position functions needed for milling heads, lathes, and grinding spindles. Because the drive closes the control loop at the spindle axis, the CNC can command both steady cutting speed and accurate angular positioning when the machine process requires it. Its role is to keep spindle response stable during acceleration, speed changes, and commanded positioning moves.
The drive is supplied from a DC bus held at 300 VDC, and its power stage can deliver a continuous phase current of 50 A to the motor windings. High-resolution speed regulation is handled through a 16-bit digital parallel interface, while a separate digital position command interface lets the controller send fine position setpoints. A second encoder input can process spindle feedback or auxiliary motor data for real-time verification of rotor motion. Thermal management relies on a mounted heat sink blower, and the housing directs air across the power section in a strictly forced cooling mode during heavy-duty operation. This arrangement supports coordinated spindle behavior during rapid speed transitions and synchronized machine movements.
The heat sink blower operates from an external source of 220 V AC (50-60 Hz), allowing the fan to be powered from general utility circuits instead of the logic supply. Proper ambient operation is specified between 5 to 45 °C, which keeps the cooling path and measurement circuits within their intended working range. Installation is limited to elevations not exceeding 1000 m above sea level, where air density remains suitable for forced airflow through the heat sink. Outside these limits, airflow and sensing accuracy can change enough to affect normal drive operation.
Frequently Asked Questions about KDA 3.1-050-3-DPD-W1:
Q: What is the required DC supply voltage for the KDA 3.1-050-3-DPD-W1 spindle drive?
A: The KDA 3.1-050-3-DPD-W1 spindle drive operates with a DC supply voltage of 300 VDC.
Q: What type of cooling system does the KDA 3.1-050-3-DPD-W1 spindle drive use?
A: This model features forced cooling with a mounted heatsink blower to manage heat during operation.
Q: What is the rated current of the KDA 3.1-050-3-DPD-W1 spindle drive?
A: The rated current for the KDA 3.1-050-3-DPD-W1 spindle drive is 50 amps.
Q: How is the speed command value input for the KDA 3.1-050-3-DPD-W1 configured?
A: The speed command value is provided digitally via a 16-bit parallel interface.
Q: What is the maximum installation elevation for the KDA 3.1-050-3-DPD-W1 spindle drive?
A: The drive can be installed at elevations up to 1000 meters above sea level.
