Product Description:

The CSH01.1C-NN-EN2-MEM-MD1-NN-S-NN-FW is a control section manufactured by Bosch Rexroth Indramat for the CSH Advanced Controllers series. Installed inside IndraDrive power units, this board forms the central processing and signal-conditioning layer that links feedback devices, I/O modules, and motion firmware into one control path inside the drive. It processes incoming feedback data and converts it into control actions for the power section without requiring a separate external controller board. Within an automation cell, the section coordinates motor commutation, handles high-speed encoder signals, and routes field-oriented commands to the drive for precise axis regulation in packaging, printing, and material-handling machines.

During normal operation, the board draws only 7.5 W from the backplane, so thermal load inside the cabinet remains low. Its analog channel sources 5 V for reference or sensor tasks, and the MD1 digital outputs can each deliver up to 0.5 A, allowing direct switching of contactors or indicator lamps. The EN2 encoder interface accepts EnDat 2.1, 1 Vpp, or 5 V TTL feedback, and it requires 35 ohm termination for proper signal transmission. This allows one control section to work with several common feedback formats used on servo axes and spindles. On this channel, the interface supports a 500 kHz sine-wave cutoff and a 1000 kHz square-wave limit, which suits high-resolution serial encoders on fast-rotating applications. The MEM extension port can supply 20 mA at an output frequency of 1 MHz for internal diagnostics or auxiliary counting tasks.

Power-up transients are controlled by an 4 A inrush current that is permitted for a maximum of 100 ms, helping prevent nuisance trips on supply breakers. Once energized, the EN2 supply rails furnish 350 mA to the connected encoder, which supports reliable excitation over extended cable lengths. The MD1 block provides 12 optically isolated digital inputs for limit switches, probe capture, and similar machine signals. The isolated input set supports direct connection of machine-state signals without sharing the same electrical reference as the power electronics. A form-C relay on the board can carry 1 A, allowing galvanically separated signaling to external interlock or status circuits.