Product Description:

The CSH01.1C-SE-EN2-NNN-NNN-NN-S-XP-FW is a single-axis control section produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. Mounted beside a Rexroth power module, it executes position, velocity, and current loops for one drive while interfacing to the SERCOS motion bus. The board combines the functions of an encoder reader, fieldbus coupler, and process I/O card in one compact insert, which reduces cabinet wiring and simplifies setup in packaging, handling, and material-processing lines.

The controller exchanges command telegrams over a fiber-optic ring that supports a peak transfer rate of 16 MBaud under the SERCOS II protocol. Drive variables are refreshed every 125 µs in the current-control loop, and setpoint packets can be issued every 1000 µs to match network timing requirements. Two analog outputs allow direct process feedback to external actuators or recorders. Gate signals for the IGBT stage can be switched up to 8 kHz, enabling fine torque modulation on high-speed servomotors. Internal consumption stays at 15.5 W, so the host drive can remove the heat through standard convection paths. A safety relay on the card provides hard-wired feedback, and its contacts are rated at DC 24 V, 1 A for use in emergency-stop chains and interlock circuits without an additional interface module.

The encoder interface completes the control loop. Incremental or absolute feedback is accepted through EnDat 2.1, 1 Vpp, or 5 V TTL formats, and the sensor line can be powered from a stabilized 5.0 V rail at up to 350 mA. For typical machines, the feedback cable may run 50 m without sense leads, and with sense conductors the limit extends to 75 m while maintaining signal quality on long carriages. During power-up, the card draws an inrush current of 4 A for 100 ms before settling to steady-state load, and the fiber-optic link provides optical isolation between noisy drive cabinets and the motion network.