Product Description:

The CSH02.1B-CC-EC-EM-L3-DA-NN-FW is a motion logic controller produced by Bosch Rexroth Indramat for distributed automation cells. It belongs to the CSH Advanced Controllers series, which pairs fast drive coordination with built-in safety. Positioned directly above the power stage, the controller computes axis trajectories, exchanges data with higher-level PLCs, and triggers field devices so that conveyors, pick-and-place gantries, and spindles stay synchronized. Housing dedicated encoder, analog, and relay interfaces in one module eliminates extra interface boards and streamlines cabinet wiring.

During operation, the unit draws a base input of 17 W, which is low enough for passive cooling inside compact enclosures. Axis data moves across the integrated SERCOS III master interface, providing deterministic timing to downstream drives, while a 100Base-TX engineering port offers remote diagnostics. That Ethernet link can span 100 m without repeaters. Each differential analog channel refreshes command values every 250 µs; current loops are digitized at 12-bit resolution and voltage loops reach 14-bit resolution for precise torque and position setpoints. Encoders connected through the EC rail can draw up to 500 mA for stable sensor power. At startup, the controller limits inrush width to 1 ms and keeps surge below 5 A to avoid breaker trips.

The output sections support real-time signaling to external hardware. The EM channel can source 20 mA on its RS-422 differential pair, while the SSI encoder track clocks at 1 MHz to accommodate absolute position sensors. For inductive actuators, the L3 driver delivers 350 mA and safely absorbs up to 400 mJ of stored energy without external snubbers. Relay contacts switch control voltages up to 30 V for auxiliary devices such as pneumatic valves. Functional safety is handled onboard, and the dual-channel circuitry implements STO (Safe Torque Off), allowing connected drives to remove motor power within milliseconds when a protective circuit is opened.