The Bosch Rexroth Indramat KDA 3.3-150-3-A0D-U1 from the KDA Spindle Drives series by Bosch Rexroth Indramat is a robust main spindle drive controller engineered for demanding speed and position control applications. This drive delivers a rated current of 150 A with a continuous current rating of 90 A, while operating on a rated voltage of 300 V DC bus. Forced cooling is provided via a built-in blower that requires a rated connection voltage of AC 50–60 Hz and is thermally bonded to the heatsink for efficient heat dissipation. Integration is facilitated through an analog ±10 V speed command interface that supports precise command value inputs.
Reliability and interfacing are central to the controller’s design: the KDA 3.3-150-3-A0D-U1 carries a Product designation: KDA, Series designation: 3, and Design designation: 3, ensuring compatibility with standard mechanical and electrical layouts. Auxiliary encoder input is not supported (Aux. Encoder Input: WithoutAux. Interface1), but a dedicated 16-bit parallel digital command interface expands control flexibility. A serial interface permits parameter storage and retrieval on external computers, and firmware is maintained on an AS programming module. All operating parameters and commissioning adjustments are managed via the front-mounted control panel for rapid set-up and diagnostics.
Encased in an IP10-rated enclosure, the drive is intended for installation within industrial cabinets, safeguarding sensitive electronics from debris while requiring trained personnel for service. Prior to any maintenance, the
Continous Current
90 A
Current Rated
150 A
Rated Connection Voltage for attached Blower
AC 50…60
Rated Voltage
300 V
Product
KDA
Series
3
Design
3
Speed Command Value
Analog +/- 10V
Aux. Encoder Input
WithoutAux. Interface1