Product Description:

The CSH01.1C-SE-EN2-NNN-MA1-NN-S-XP-FW is a plug-in controller section produced by Bosch Rexroth Indramat and belongs to the CSH Advanced Controllers series. Mounted on an IndraDrive power section, it handles axis control logic, encoder evaluation, and fieldbus exchange so that servo motors follow commanded motion profiles. By integrating dedicated encoder and analog modules, the board centralizes position feedback and set-point generation, reducing wiring complexity inside presses, packaging machines, and other industrial automation systems.

Operation begins with a regulated back-plane supply of DC 24 V, which energizes local converters and logic circuits. Under normal conditions, the control core dissipates 7.5 W, aiding thermal calculations for the drive cabinet. Real-time traffic moves across SERCOS II, a fiber-optic bus that transmits set-points, status words, and parameter data with sub-microsecond timing jitter. During initial energization, the capacitive network of the section can draw up to 4 A, so a slow-blow fuse or soft-start relay is typically placed in series to absorb this surge. For the secondary EN2 channel, the required signal termination is 35 ohms, matching the impedance of typical sine-cosine encoder pairs and preventing reflections on high-speed feedback lines.

The EN2 circuitry is powered separately, consuming 6 W and pulling approximately 350 mA from an internal 5 V regulator, figures that help verify regulator headroom when multiple options are fitted on one base unit. Motion tuning often relies on low-frequency analog references, and the MA1 option delivers this through two inputs and two outputs calibrated for ±10 V. Both the A/D and D/A paths use 12-bit converters, providing 4096 discrete steps for incremental set-point changes and feedback scaling. Digital timing tasks are supported by a maximum pulse width of 100 ms, allowing the controller to latch edge-triggered events without overlapping the primary motion cycle.