Product Description:

The CSH01.1C-NN-EN2-NNN-MD1-NN-S-NN-FW is a motion-control logic unit produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. Installed in an IndraDrive modular rack, the card coordinates feedback handling, command calculation, and network communication for a single servo axis. It converts encoder position data and external switch states into deterministic control signals, allowing precise velocity, position, and torque regulation in automated assembly lines, material-handling gantries, and process equipment. As the control section of the axis, it concentrates on signal processing and closed-loop coordination inside the drive system.

During startup, the controller draws a base inrush current of 4 A, after which steady operation settles at a base consumption of 7.5 W. The optional EN2 encoder channel adds only 6 W to that load, so the added thermal burden inside the cabinet remains small. Its sine evaluation path presents an input resistance of 120 ohms, while the square-wave path can process signals up to 1000 kHz. This allows the unit to work with more than one encoder signal format on the same control platform. An EnDat 2.1 interface supplies the transducer with 5 V and supports automatic position verification over cables up to 75 m when sense leads are used, while the limit is 50 m without sense. When the sense connection is used, voltage drop on long cable runs is compensated in real time, which helps preserve feedback accuracy.

The MD1 expansion delivers 12 opto-isolated digital inputs and 8 transistor outputs for direct sensor and actuator coupling. Isolation helps separate field wiring from the controller electronics, which is useful when switches and outputs are distributed around a machine frame. These lines are powered by the MD1 board itself, which adds only 1 W to the overall load and switches field devices through a relay contact rated at 24 VDC and 1 A. For local configuration or diagnostics, an RS-232 port transfers data at up to 115 kbaud over cables limited to 15 m. The serial port provides a direct service connection when access through the main machine network is not required.