KDA 2.1-100-3-DQS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-100-3-DQS-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 100 Amps and a DC supply voltage of 300 Volts. It features forced cooling via a mounted heatsink blower and operates in ambient temperatures from 5 to 45 degrees Celsius. The drive supports a 16-bit parallel digital speed command value and includes a serial RS 232 C interface.
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Product Description:
The KDA 2.1-100-3-DQS-W1 spindle drive is produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. As a dedicated spindle drive, it converts DC link energy from an external supply into three-phase output for high-speed motor control in CNC machines and other automated cutting systems. By managing torque and speed with closed-loop precision, the unit allows machining centers to maintain surface finish quality and tool life while reducing cycle time.
The drive draws its main power from a DC link rated at 300 VDC; this is the required input for the internal switching stage and must be supplied by a compatible converter module. A continuous output capacity of 100 A permits the spindle motor to accelerate heavy tool holders without current foldback. The controller interprets a 16-bit parallel digital speed command, so numerical control systems can load precise setpoints with a resolution of 65,536 steps. Thermal stability is supported by a mounted heat sink blower that directs airflow across the semiconductor stack, and the fan itself is powered from a separate 220 V, 50/60 Hz source so cooling remains independent of the DC bus. Independent fan power helps the unit stay cooled during long roughing passes or rapid spindle reversals.
The drive operates between 5 °C and 45 °C, allowing installation on factory floors that are conditioned only for personnel comfort. Altitude is restricted to 1000 m above sea level; beyond this height, derating is required because thinner air reduces convective heat removal. An integrated RS-232-C serial interface offers parameter backup and diagnostic readout without removing the unit from the cabinet, supporting preventive maintenance routines. Air is forced through the heat sink channels by forced cooling, keeping internal temperatures below operating limits even when the equipment cabinet lacks auxiliary ventilation.
Frequently Asked Questions about KDA 2.1-100-3-DQS-W1:
Q: What is the rated current for the KDA 2.1-100-3-DQS-W1 spindle drive?
A: The KDA 2.1-100-3-DQS-W1 supports a rated current of 100 A, allowing for high-demand spindle operations.
Q: How is the KDA 2.1-100-3-DQS-W1 spindle drive cooled?
A: This model features forced cooling through a mounted heatsink blower, improving thermal management under continuous use.
Q: What power supply does the heatsink blower require on this spindle drive?
A: A 220V/50-60Hz AC source is required to power the heatsink blower in this spindle drive.
Q: What is the maximum installation elevation for the KDA 2.1-100-3-DQS-W1?
A: The KDA 2.1-100-3-DQS-W1 can be installed at elevations up to 1000 meters above sea level.
Q: What type of speed command value interface does this spindle drive use?
A: Speed command values are accepted digitally via a 16-bit parallel interface in this drive model.
