KDA 2.1-150-3-APS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-150-3-APS-W1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 150 Amps and operates with a DC supply voltage of 300 VDC. The drive uses a mounted heatsink blower with forced cooling and supports a serial RS 232 C interface for connectivity.
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Product Description:
The KDA 2.1-150-3-APS-W1 is a spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. In machine-tool and manufacturing cells, this unit supplies controlled three-phase power to a high-speed spindle, allowing precise velocity regulation during drilling, milling, or grinding. A dedicated heat sink blower, internal control electronics, and encoder interfaces are integrated so the drive can supervise both motor temperature and rotational feedback without relying on external modules.
The power section is designed for a continuous output of 150 A while operating from a DC link of 300 VDC. To keep the internal heat sink at a stable temperature, the blower is fed from 220 V at 50/60 Hz, and its airflow is coordinated with the unit’s forced cooling mode to evacuate heat under sustained load. Speed commands enter as an analog voltage, which the controller converts into pulse-width-modulated output for the spindle motor. Parameter adjustments or diagnostics can be carried out through the serial channel that follows the RS-232C standard, simplifying integration with legacy CNC controls. A second encoder socket accepts spindle-mounted sensors or an auxiliary motor feedback line, letting the same drive manage both positioning and surface speed applications without additional hardware.
The fan and heat sink assembly uses a mounted heat sink blower, eliminating ductwork and allowing cabinet installation at ambient temperatures from 5 to 45 degrees Celsius. Operation is rated up to 1000 m above sea level, so derating is not required for typical plant elevations. Series index 2 indicates the control platform generation. The spindle feedback channel, analog speed reference, and forced-air cooling support stable operation during rapid speed changes and prolonged machining cycles.
Frequently Asked Questions about KDA 2.1-150-3-APS-W1:
Q: How is the KDA 2.1-150-3-APS-W1 spindle drive cooled?
A: This model is equipped with a mounted heatsink blower that provides forced cooling to support stable spindle drive operation.
Q: What is the rated current capacity for the KDA 2.1-150-3-APS-W1 spindle drive?
A: The KDA 2.1-150-3-APS-W1 can handle a rated current of 150 A.
Q: What communication interface is available on the KDA 2.1-150-3-APS-W1?
A: A serial interface using RS 232 C is included on this drive for communication and configuration.
Q: What ambient temperature range can the KDA 2.1-150-3-APS-W1 operate in?
A: The drive supports operation in ambient temperature ranges from 5 to 45 degrees Celsius.
Q: What is the required DC supply voltage for the KDA 2.1-150-3-APS-W1 spindle drive?
A: The DC supply voltage requirement for this spindle drive is 300 VDC.
