Product Description:

The CSH02.1B-CC-EC-EC-S4-EC-NN-FW is a motion-logic controller produced by Bosch Rexroth Indramat within the CSH Advanced Controllers series. It serves as the command layer in multi-axis automation, coordinating drive, encoder, and safety data between the HCS02, HCS03, HCS04, HMS01, and HMS02 power sections. In an industrial cell, it supplies deterministic timing, gathers position feedback from several encoder formats, and implements integrated safety so that connected drives operate within predefined limits. Because it sits above the power sections, it manages command processing and distributes synchronized setpoints to the connected drive hardware.

Core operating power is derived from a DC 24 V control supply, with a base draw of 17 W and an additional 1.1 W reserved for the EC expansion module. The S4 safety plug adds 2.5 W, and during startup the inrush current is limited to a 1 ms pulse width to help avoid nuisance protection trips. Communication with subordinate drives and HMIs is through a SERCOS III master interface that supports cyclic data exchange at sub-millisecond rates. For position sensors powered at 12 V, the board can source 500 mA, while a separate 5 V rail supplies incremental encoders. The relay output can switch control signals up to 30 V without external amplifiers. Separate sensor supply rails allow different feedback devices to operate without sharing the same excitation source.

The controller has 3 multi-encoder interfaces, allowing BiSS, SSI, and resolver feedback on the same backplane. Resolver excitation is provided at 8 kHz with 40 mA RMS source current, which helps maintain a stable carrier signal on long motor cables. The S4 safety module uses Safe Motion technology, and its discrete inputs conform to IEC 61131 Type 1 for direct connection of emergency stop contacts. Direct compatibility with several encoder types can reduce the need for extra conversion hardware in mixed-feedback systems.