Product Description:

The CSH01.1C-PB-ENS-NNN-NNN-L2-S-NN-FW controller is produced by Bosch Rexroth Indramat within the CSH Advanced Controllers series. It is a compact control section for Rexroth drive systems, providing axis management, fieldbus connectivity, and integrated safety for industrial automation cells. By processing motion commands, managing feedback from encoder channels, and coordinating drive parameters, it serves as the central logic element inside packaging, material-handling, and processing machines.

The unit draws a base supply of 7.5 W, with an additional 6 W allocated to the ENS encoder module and 2 W reserved for the fieldbus daughterboard, which helps simplify cabinet power planning. Communication with higher-level PLCs occurs over PROFIBUS, and the embedded digital inputs and outputs follow the IEC 61131 Type 1 format for signal compatibility. The analog output stage uses an 8 bit converter that completes each digital-to-analog transfer in 10 µs. Each increment equals 19.5 mV/inc, allowing fine reference generation for external amplifiers or transducers. Encoder feedback is handled by the ENS channel, which evaluates sine-cosine and TTL signals without requiring additional interface boards.

For setup and diagnostics, the controller provides a RS232 serial port that allows parameter access without occupying the fieldbus. Machine safety is addressed by the integrated Safe Torque Off circuit, and its enable input accepts 24 V at 3 mA while operating in parallel with feedback contacts to verify channel integrity. Both the internal relay output and the STO feedback path can switch loads up to DC 24 V / 1 A, which reduces the need for auxiliary interposing relays in light-duty actuator loops. This arrangement lets the controller handle parameter access, encoder evaluation, discrete I/O processing, and safety signaling from one compact control section.