Product Description:

The CSH02.1B-CC-EC-PB-L3-DA-NN-FW belongs to the CSH Advanced Controllers series produced by Bosch Rexroth Indramat. This controller governs multi-axis drive assemblies, linking motion tasks to higher-level PLCs and HMI stations. Within an automation cell, it acts as the axis coordinator, generating setpoints, processing encoder feedback, and forwarding fieldbus data so that motors follow commanded profiles without overshoot or drift.

The unit sends axis control data over a SERCOS III master interface, providing deterministic real-time messaging to connected drives. In the analog section, the DA current channel has a resistance of 300 Ω, which helps limit sink or source current for downstream transducers. The same channel updates output values every 250 µs, giving a 4 kHz internal update rate that supports tight torque loops. In voltage mode, the small-signal response extends to 1.3 kHz, helping maintain command fidelity during rapid speed changes. The analog output uses a voltage resolution of 14-bit, while current mode uses 12-bit resolution, allowing fine drive tuning, and each digital step equals 24 mV to match common ±10 V input ranges used by servo inverters.

The EC measurement path uses a 12-bit converter and an input impedance of 120 Ω to accommodate differential sensor outputs without excessive loading. Analog integrity is preserved up to a sine-wave cutoff of 400 kHz; for square-wave signals, the bandwidth extends to 1000 kHz, enabling accurate capture of high-frequency encoder pulses. A PROFIBUS slave port uses a D-Sub 9-pin female connector on the RS485 layer to supply cyclic I/O to plant-wide networks. Multi-encoder capability supports incremental, absolute, and resolver feedback on a single backplane. When a risk-related stop is required, the integrated Safe Torque Off function disables the drive stage without external contactors.