Product Description:

The CSH01.1C-SE-EN2-EN1-NNN-S1-S-NN-FW is a single-axis control section produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. Installed in Rexroth drive stacks, the module executes motion commands, fieldbus communication, and integrated safety I/O for industrial automation cells. It serves as the processing layer that links servo drives to higher-level PLCs, coordinating position loops, velocity loops, and diagnostic feedback while occupying one controller slot in a modular cabinet environment. Its role is to synchronize drives, encoders, and peripheral sensors with deterministic cycle timing, and it can coordinate drive behavior and safety-related signals without requiring a separate standalone controller for each axis.

The card houses one analog output that delivers 1 mA and can reach 5 V, enabling deterministic reference signals to external actuators or measurement equipment. A dedicated digital output line sources up to 500 mA for switching relays or opto-isolated loads, while internal consumption remains limited to 7.5 W, reducing cabinet heat. Communication with the drive network is handled over the real-time SERCOS II control bus, so setpoint data and drive status are exchanged with very low latency. Encoder interface 1 supports EnDat 2.1, 1 Vpp, and 5 V TTL feedback, while encoder interface 2 supports a resolver or HSF format. For the second interface, the head-sense feed requires 250 mA and is supplied at 8 V. This arrangement allows the controller to work with several common feedback devices within the same drive platform.

The second encoder supply path tolerates an external load of 35 ohms and draws 350 mA, helping maintain a stable carrier for high-speed resolver signals. On power-up, the control section experiences an inrush of 4 A, a value used for fuse and power bus sizing. Output pulse trains generated by the module are constrained to a maximum width of 100 ms, preventing prolonged drive-enable states during fault conditions. Resolver excitation is 18.2 Vpp at a carrier of 4 kHz, allowing precise angular interpolation. The Safety Technology I/O option adds hardwired channels that shut down torque when limit switches or light curtains are triggered, so the stop path does not rely only on network messaging.