Product Description:

The CSH02.5B-CC-EC-NN-S4-NN-NN-FW is an automation controller from Bosch Rexroth Indramat in the CSH Advanced Controllers series. Installed on the HMU05 power section, it governs drive loops, closes feedback paths from encoders, and links motion tasks to higher-level PLC networks. By issuing setpoints and evaluating safety inputs, the module serves as the command core for coordinated servo axes in packaging, material-handling, and assembly equipment.

Its analog interface is optimized for precise loop closure. Each differential input accepts process signals up to 10 V, is sampled at 14-bit resolution, and maintains a full-scale bandwidth of 1.3 kHz, letting the controller follow fast current or pressure changes. The converter’s common-mode rejection of 50 dB helps reduce errors caused by ground shifts between field sensors and the cabinet. Output channels generate velocity or torque commands in 10 V format with a step size of 24 mV per increment, while a regulated encoder rail delivers 6 W and up to 500 mA at 5 V for SSI, EnDat, or Hiperface transducers. All logic electronics are supplied from a 24 V DC line fused inside the HMU.

For machine safety, the board integrates dual-channel inputs evaluated by the S4 safety option; they recognize a high state at 15 V and tolerate fault voltages up to 30 V. The associated safety logic draws 2.5 W, while the EC communication option needs only 1.1 W, which helps keep cabinet control power demands low. Two form-C relays deliver up to 1000 mA per contact and are rated for 1 × 10⁸ mechanical operations, supporting emergency-stop loops and other monitored interlocks. When a resolver is used instead of a digital encoder, the excitation is supplied as a symmetric 8 kHz carrier, and the feedback channel tracks rotor position at the same frequency to sustain smooth torque during rapid reversals. This allows the controller to work with either digital feedback devices or resolver-based motor feedback within the same platform.