Product Description:

The CSH02.1B-ET-EC-NN-L3-DA-NN-FW is a modular motion and logic controller produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. As a central processor within an automation cell, it receives encoder data, executes axis interpolation, and sends torque and velocity commands to servo inverters. The design targets applications that need deterministic synchronization among several electric drives, allowing machine tools, pick-and-place stations, and conveyor modules to run coordinated sequences without external PLC hardware.

The controller draws a base supply of 17 W, while the ET, EC, and L3 option boards add 2.7 W, 1.1 W, and 1.0 W respectively, so cabinet power budgeting can be precise. Its analog section delivers an output span of ±10 V and uses a matching range on the differential inputs, letting it command velocity drives or read process transducers. Conversion accuracy is supported by a 14-bit voltage ADC and a current ADC with 12-bit depth. For digital motion buses, the integrated Multi-Ethernet interface handles EtherCAT, Sercos III, and PROFINET traffic without separate cards. Discrete actuators can be switched directly by the controller’s 500 mA transistor outputs, and the DAC step size is 24 mV/incr.

In feedback processing, the unit incorporates a Multi-Encoder Interface that accepts EnDAT, BiSS-C, and resolver signals. The encoder supply rail can power multiple sensors concurrently, and the resolver excitation is generated at 8 kHz for stable amplitude. For safety, the hardware includes Safe Torque Off, allowing energy removal from connected drives without shutting down fieldbus communications. When additional sensors or valves are required, the Digital/Analog I/O extension module attaches to the front panel and is scanned by the same current and voltage converters, so time-critical events still propagate through the network with deterministic latency.