Product Description:

The CSH01.1C-S3-EN1-EN2-MEM-L2-S-NN-FW is a single-axis controller module from Bosch Rexroth Indramat in the CSH Advanced Controllers series. It mounts inside an IndraDrive power section and coordinates motor position, speed, and torque requests in distributed automation lines. By linking servo feedback devices to two dedicated encoder channels, the unit conditions position data and relays it to higher-level motion planners. In plant networks, it acts as the local intelligence that converts fieldbus commands into real-time drive currents, forming the bridge between supervisory PLCs and the power electronics that energize the motor windings.

I/O interfaces allow both analog and digital signaling. The analog monitor channel presents an input resistance of 160 kOhm, minimizing loading on external transducers. For reference generation, the module provides an analog output of 5 V, 1 mA, which can feed velocity or torque command lines on legacy equipment. The sixteen programmable inputs evaluate discrete sensor signals at 24 V, 3 mA, while the switching outputs can drive contactors and similar loads up to 24 V, 0.5 A. Motion and diagnostics data travel over the optical ring using the SERCOS III real-time protocol for deterministic communication.

At power-up, the controller draws an inrush current of 4 A, then operates from the 24 V control supply while the encoder ports provide 8 V and 5 V excitation to connected feedback devices. Integrated safety logic implements Safe Torque Off, which removes drive pulses when the safety chain opens. Pulse-train functions such as position latching are handled by the MEM interface, which can stream marker signals at 1 MHz over cable runs up to 40 m. A hardware timer limits individual output pulses to 100 ms, helping prevent unintended extended energization of downstream brakes or clutches.