Product Description:

The CSH02.1B-ET-EC-EC-S5-DA-NN-FW controller belongs to the CSH Advanced Controllers series produced by Bosch Rexroth Indramat. Designed as a central motion processor for modular drive packages, it coordinates real-time position, velocity, and safety tasks across multiple servo axes in industrial automation cells. The unit links higher-level PLCs with machine-mounted power sections, converting program commands into deterministic control signals for the connected drives. Its compact format suits small control cabinets, and the integrated Ethernet hub helps simplify network routing.

The controller exchanges process data through a Multi-Ethernet port set, allowing support for SERCOS III, EtherNet/IP, PROFINET, and EtherCAT without additional hardware. Its differential analog input channel provides 14 bit resolution, so small displacement changes can be recognized by the position loop. Voltage commands sent to external actuators leave the board with a granularity of 24 mV/incr, which supports fine analog output steps. Each digital-to-analog cycle is completed within 250 µs, keeping the analog path aligned with the high-speed internal position controller clock. The measurement front end provides 50 dB of common-mode rejection, which helps preserve accuracy in electrically noisy environments.

For safer operation, the unit implements Safe Motion S5 functions that monitor velocity, position, and shutdown paths. Two internal channels evaluate safety encoders independently, and resolver feedback is also accepted for redundant monitoring. The analog output can drive loads down to 2 kΩ, which fits many standard servo amplifiers. The required firmware revision is MPx-18VRS or later to support the multi-encoder interface and the digital and analog I/O extension block. Drive cabinets may combine power modules HCS02, HCS03, HCS04, HMS01, HMS02, and the controller’s built-in short-circuit protection shields these sections from output faults during normal operation.