KDA 2.1-150-3-AQS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-150-3-AQS-W1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 150 Amps and operates with a 300 VDC supply voltage. The unit has forced cooling provided by a mounted heatsink blower and includes a serial interface for connectivity.
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Product Description:
The KDA 2.1-150-3-AQS-W1 is a spindle drive produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. As a generation 2 unit, it converts regulated DC-link energy into three-phase output for high-speed milling or grinding spindles. The drive is used in a modular automation rack, where it closes the motor velocity loop and supplies real-time feedback to the numerical control for precise speed regulation during demanding metal-cutting cycles. This arrangement helps the spindle respond quickly to changing cutting loads without losing commanded speed stability.
A bus voltage of 300 VDC feeds the inverter stage, so shared DC-link cabling must use insulation suited to that supply level. The unit can deliver up to 150 A of continuous phase current, which supports rapid spindle acceleration and sustained operation under heavy process demand. Reliable operation requires ambient air to remain within 5 to 45 °C; outside this range, the temperature monitor issues a warning to protect the power section. The integral fan uses a dedicated 220 V, 50/60 Hz supply so airflow remains available even when the DC bus is off. Heat removal depends on a mounted heat sink blower that directs air across the fin pack and helps prevent thermal derating during extended spindle use.
Parameter uploads and fault diagnostics are handled through an RS-232-C serial interface that connects directly to an external controller or computer. The cooling method is forced cooling, so fan operation is used for maximum heat transfer rather than thermostatic control. Installation altitude must not exceed 1000 m above sea level because thinner air reduces convective efficiency and can raise device temperature. Spindle speed is commanded with an analog reference voltage, so drive tuning is based on stable gain across the operating range. This signal method allows the module to follow continuous speed commands commonly used in machine-tool control systems.
Frequently Asked Questions about KDA 2.1-150-3-AQS-W1:
Q: What type of cooling system does the KDA 2.1-150-3-AQS-W1 spindle drive utilize?
A: The KDA 2.1-150-3-AQS-W1 spindle drive uses a mounted heatsink blower for cooling.
Q: What is the rated current for the KDA 2.1-150-3-AQS-W1 spindle drive?
A: This spindle drive operates with a rated current of 150 A.
Q: What is the required DC supply voltage for the KDA 2.1-150-3-AQS-W1?
A: It requires a DC supply voltage of 300 VDC for operation.
Q: What AC power specification is needed for the heatsink blower in the KDA 2.1-150-3-AQS-W1?
A: The AC source for its heatsink blower is rated at 220V and supports 50-60Hz.
Q: What type of additional interface does the KDA 2.1-150-3-AQS-W1 spindle drive include?
A: It is equipped with a serial interface (RS 232 C) as an additional communication interface.
