Product Description:

The CSH02.1B-ET-EC-EC-L3-NN-NN-FW motion controller is produced by Bosch Rexroth Indramat within the CSH Advanced Controllers series. Designed as the central node in multi-axis drive groups, it coordinates command processing, feedback evaluation, and network traffic for industrial automation cells. By integrating communication ports, encoder interfaces, and safety circuits in a single housing, the unit simplifies cabinet layouts and shortens setup time for machine builders. It issues velocity and position commands over Ethernet or Sercos while supervising real-time status data from connected inverters.

The controller supplies 2 analog outputs, each generated by a digital-to-analog converter with a resolution of 24 mV/incr. This fine step size enables smooth torque biasing or reference voltage generation for connected drives. For discrete signaling, 11 digital inputs capture limit switches or user commands. Multi-Ethernet support uses the physical layer 100Base-TX (IEEE 802.3u), allowing deterministic messaging over standard cabling. Internal processing, status LEDs, and auxiliary circuitry consume only 17 W of base power, which helps minimize thermal load inside the cabinet. Two multi-encoder ports permit direct connection of incremental or absolute encoders for cyclic position capture without separate interface cards.

Standard 24 V distribution lines can draw up to 500 mA from the controller’s switched transistor outputs, which is enough to actuate contactors or signal towers without external relays. When the integrated Safe Torque Off function is active, a separate channel is limited to 350 mA to support safety sensors while preventing motor enable. The safety function is STO (Safe Torque Off), which removes residual drive torque through redundant shutdown paths. Field wiring connects through an RJ-45, 8-pin connector. Three optional slots accept extra fieldbus cards, probe inputs, or relay modules without increasing the controller’s footprint.