Product Description:

The CSH01.1C-SE-EN2-EN1-MA1-S1-S-NN-FW is a control section produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. It functions as the central processing and interface module inside modular drive stacks, coordinating feedback devices and communication channels so that servo axes respond precisely to the higher-level automation system. By combining encoder evaluation, analog measurement, and Sercos networking on one board, the unit streamlines cabinet layout and reduces wiring in industrial motion platforms.

During configuration, the board draws a maximum of 24.5 W, a figure that helps size the cabinet power budget. All internal logic and encoder supplies are regulated from a dedicated DC 24 V control supply, isolating sensitive electronics from the main bus. The EN1 channel accepts position feedback devices with an input resistance of 10 kΩ, minimizing sensor loading and preserving signal integrity. High-speed incremental encoders can instead be wired to EN2; that port accepts input frequencies up to 1000 kHz, provides 350 mA of source capability on its 5 V rail, and includes a 120 ohm differential input so transmission lines remain matched. The MA1 analog output path resolves command voltages down to 5 mV/inc, enabling fine torque or velocity trimming when the drive operates in analog control modes.

At power-up, the section may briefly demand an inrush current of 4 A, so supply circuits should include components that can withstand this surge without nuisance tripping. Resolver transducers are driven directly from the board through a sine excitation of 18.2 Vpp at 4 kHz, eliminating the need for external oscillators and keeping wiring simple. For networked motion, the integrated Sercos interface transfers real-time setpoints and diagnostics at up to 16 MBaud, allowing multi-axis systems to synchronize position loops within microseconds while maintaining deterministic bus timing.