Product Description:

The CSH01.1C-S3-EN2-ENS-NNN-S2-S-NN-FW is a motion control logic module produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. It mounts inside IndraDrive drive units and coordinates servo axes, fieldbus messaging, and machine safety tasks in industrial automation cells. By combining analog, digital, encoder, and safety interfaces on the same card, the controller provides the signal conversion and supervisory logic required between higher-level PLCs and the power stage of the drive.

At the analog front end, the module presents an input impedance of 160 kΩ, minimizing loading on external sensors. Its dual analog outputs can source up to 1 mA with a quantization step of 19.5 mV/inc, allowing fine voltage references to be delivered to proportional valves or speed setpoints. Each digital output channel is rated for 500 mA, so optocoupled drivers or small relays can be switched directly from the board. During power-up, the circuit absorbs an inrush of 4 A for a 100 ms pulse, so cabinet fusing must account for this short transient. Beyond start-up, debounced safety inputs and quadrature encoder connections operate continuously without exceeding their specified current limits.

The logic core draws a base load of 7.5 W, while the optional S3 plug-in consumes an additional 1 W when fitted. The EN2 encoder supply provides regulated 5.0 V at 350 mA and supports cable runs that exhibit up to 35 Ω of total resistance. For resolver feedback, the ENS excitation rail delivers 11.6 V with 500 mA capability and maintains signal fidelity up to 500 kHz carrier frequency. Safety channel S2 includes force-guided relay contacts rated at 24 V DC / 1 A and a solid-state path that can carry 1.6 A, allowing the controller to interrupt motor enable lines or external contactors without auxiliary hardware. These power figures help size the backplane supply and predict thermal dissipation in the drive enclosure.