Product Description:

The CSB02.5B-ET-EC-NN-L3-NN-NN-NW drive controller belongs to the CSB Drive Controllers series produced by Bosch Rexroth Indramat. It is designed to manage servo and spindle axes in automated machinery by combining power electronics with real-time motion processing. Within an automation rack, it forms the control section that interfaces with an external HMU05 power module and with feedback devices, so regulated motor currents follow the demand profiles generated by a PLC or embedded motion application.

Its analog front end supports single-ended or differential command signals. An input resistance of 300 kΩ minimizes loading on upstream transducers, while a resolution of 14-bit converts those voltages into precise torque or speed references. Two programmable outputs can retransmit process values with a granularity of 24 mV per increment, which is useful for closed-loop diagnostics. The control electronics are energized from a 24 V DC supply, isolating low-power circuitry from the main drive bus. Position feedback arrives through the Multi-Encoder interface; up to 500 mA of 5 V encoder current is available, and the overall encoder power budget is 6 W, allowing connection of high-resolution optical or magnetic sensors without external regulators. An onboard X35 connector provides additional I/O for temperature probes or limit switches.

For networked control, the unit integrates Multi-Ethernet communication that consumes only 2.7 W and provides 2 Ethernet ports compliant with IEEE 802.3, enabling line or ring topologies without extra switches. The communication interface supports EtherNet/IP, PROFINET, or EtherCAT on the same hardware. Mechanical isolation of the power stage is achieved by pairing the controller with the HMU05 section, which handles mains rectification and motor phase currents. Functional safety is implemented through the Safe Torque Off channel, which removes gate signals to the HMU05 when a stop command is issued or a fault is detected.