Product Description:

The CSB02.5B-ET-EC-PB-S4-EM-NN-NW belongs to the CSB Drive Controllers series produced by Bosch Rexroth Indramat. Within an automation cell, this control section pairs with a compatible power module to regulate servo or synchronous motors and coordinate multi-axis motion. By combining Ethernet-based communication, classic fieldbus links, and integrated safety, it serves as the central node that bridges higher-level PLC commands with precise motor feedback.

This control section mates electrically with the HMU05 power section, so its thermal and current capability depends on that supply unit. The auxiliary interface supports encoder emulation, so the unit can generate position reference data internally and deliver that synthesized feedback in the SSI format. Physical feedback channels are available through the Multi-Encoder Interface, letting the controller accept digital encoders, EnDat, or Hiperface without additional cards. For real-time network motion, the unit offers SERCOS III alongside EtherCAT, EtherNet/IP, and PROFINET IO; these Ethernet buses share a single RJ-45, 8-pin media port to simplify cabinet wiring. Safe Motion S4 functions are available on supported drives, yet a resolver cannot be used with S4, so applications that require sinusoidal resolver feedback must use another safety option.

All Ethernet traffic moves over the IEEE layer-2 channel identified as 100Base-TX, supporting deterministic update cycles when the network is switched. Non-Ethernet plant networks connect through the integrated PROFIBUS master/slave interface that terminates on a D-Sub 9-pin female connector and exchanges telegrams on the EIA-RS485 physical layer. When the PROFIBUS repeater function is enabled, the internal driver sources up to 75 mA to the bus, powered by the controller’s logic rail of +5 V (±10%). These electrical characteristics let the drive controller forward telegrams between long bus segments while maintaining signal integrity and galvanic isolation.