KDA 2.1-150-3-DQS-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 2.1-150-3-DQS-W1 is a spindle drive in the KDA Spindle Drives series, designed with a rated current of 150 Amps and a DC supply voltage of 300 VDC. This device uses a mounted heatsink blower for forced cooling and operates within an ambient temperature range of 5 to 45 degrees Celsius. It includes a serial interface (RS 232 C) and accepts speed command values as 16-bit digital parallel signals.
Internal Product Review
The KDA 2.1-150-3-DQS-W1 spindle drive from Bosch Rexroth Indramat delivers impressive performance with a rated current of 150 A and a DC supply voltage of 300 VDC. Forced cooling is achieved via a mounted heatsink blower powered by a 220V AC source, supporting reliable operation in demanding environments. Integrated serial interface (RS 232 C) and digital (16 bit parallel) speed command value make this drive particularly versatile for advanced spindle control.
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Product Description:
The KDA 2.1-150-3-DQS-W1 is a drive module manufactured by Bosch Rexroth Indramat for the KDA Spindle Drives series. It converts a constant DC bus into a controlled three-phase output, letting CNC controllers run high-speed spindle motors with closed-loop accuracy. Within an automation cell, the unit supplies current, monitors operating limits, and responds to digital speed references as the electrical link between the motion controller and the cutting process. This arrangement allows the spindle axis to accelerate, regulate speed, and react to changing load conditions during machining.
Electrical power reaches the inverter through a shared DC link held at 300 VDC. At that level, the drive can source a continuous armature current of 150 A, allowing demanding ramp profiles without early saturation. A separate cooling circuit uses a fan connected to a 220 V/50-60 Hz mains tap to move air across the integral heat sink. Because this hardware combines forced cooling with a heat sink-mounted blower, internal junction temperatures stay within limits during prolonged spindle duty. The specified ambient operating range of 5 to 45 °C helps protect the power section and control electronics from temperature-related stress.
System integration benefits from the built-in serial interface (RS-232-C), which supports parameter access and oscilloscope traces without removing cabinet covers. Installation is limited to facilities situated below 1000 m above sea level so cooling airflow and dielectric spacing remain effective. The control board receives its speed reference through a 16-bit digital parallel input, enabling the CNC to command precise spindle speed values while avoiding analog drift. Separate channels for service access and command input help the module fit into machine layouts that require both tuning access and stable speed control.
