KDA 3.1-150-3-A00-W1-220 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-A00-W1-220 spindle drive is part of the KDA Spindle Drives series. It features a rated current of 150 Amps, a DC supply voltage of 300 VDC, and uses forced cooling with a mounted heatsink blower. The device operates with a speed command value that is analog and supports an ambient temperature range of 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.1-150-3-A00-W1-220 spindle drive is produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. The module functions as the axis-specific inverter for machine-tool spindles, translating motion commands from a higher-level controller into three-phase motor power and providing the dynamic speed regulation required in automated machining lines. By integrating into the Indramat drive system, it supports rapid acceleration and deceleration of high-frequency spindle motors without external contactors. This arrangement helps the spindle respond quickly to changing cutting loads during milling, drilling, and similar processes. It is intended for applications where the drive must hold commanded spindle speed during rapid changes in tool load.
Its power section is supplied from a common DC link of 300 VDC, and the drive can continuously deliver up to 150 A of output current to the connected spindle motor. Thermal energy from the IGBT stage is removed by a mounted heat sink blower that is built into the housing. Airflow follows a forced cooling path, and the blower motor is powered by an auxiliary line of 220 V/50–60 Hz. The integrated fan arrangement keeps the cooling hardware within the same assembly and avoids the need for a separate external blower unit.
The unit operates between 5 to 45 °C and at elevations up to 1000 m above sea level before output derating is required. Speed references are accepted as an analog voltage signal, which simplifies connection to legacy CNC controllers. The hardware generation is identified as Series 3. There is no additional communication board, and it does not feature a second encoder input, so auxiliary feedback or fieldbus functions must be routed through external modules. This layout suits installations that rely on external control hardware for added interface functions.
Frequently Asked Questions about KDA 3.1-150-3-A00-W1-220:
Q: What is the rated current for the KDA 3.1-150-3-A00-W1-220 spindle drive?
A: The KDA 3.1-150-3-A00-W1-220 spindle drive operates with a rated current of 150 A, supporting heavy spindle loads.
Q: What cooling method is used in the KDA 3.1-150-3-A00-W1-220?
A: This unit uses forced cooling with a mounted heatsink blower for thermal management.
Q: What is the maximum installation elevation for the KDA 3.1-150-3-A00-W1-220?
A: The KDA 3.1-150-3-A00-W1-220 can be installed up to an elevation of 1000 meters above sea level.
Q: What AC source does the heatsink blower of the KDA 3.1-150-3-A00-W1-220 require?
A: The AC source required for the heatsink blower is 220V at 50-60Hz.
Q: What type of speed command value does the KDA 3.1-150-3-A00-W1-220 accept?
A: Speed command values for this spindle drive must be input in analogue form.