Product Description:

The CSB01.1C-S3-ENS-ENS-L1-S-NN-FW is a modular control section produced by Bosch Rexroth Indramat for the CSB Drive Controllers series. Installed in a basic or double-axis power section, it provides closed-loop regulation for servo and induction motors in industrial automation cells, packaging lines, and material-handling stations. The unit supplies axis control functions, fieldbus communication, and encoder evaluation so that the complete drive can execute accurate position, velocity, and torque commands in real time. Its modular format allows the same control concept to be used across different machine layouts without changing the basic role of the axis electronics.

This control section links to higher-level PLCs over Sercos III and is powered by a logic supply of 24 V DC. Five discrete digital inputs, three configurable digital I/O points, and one relay output allow direct wiring of limit switches or status contacts, while the single analog input and two analog outputs support speed or torque references that use ±10 V signaling. Motion commands are refreshed by a current loop that closes every 125 µs; the velocity loop executes every 250 µs, and the position loop updates at 500 µs. A D-Sub 15 female connector accepts incremental or absolute encoder feedback, and an RJ45 8-pin network port carries real-time Sercos telegrams with automatic ring redundancy.

The PWM stage drives the power inverter at 4 kHz, balancing switching losses with current ripple. For encoder electronics, the board provides a stabilized supply of 11.6 V at up to 500 mA, reducing the need for external power taps. A built-in safety channel implements Starting Lockout, preventing unintended motion until all enabling conditions are met. The local encoder supply helps simplify wiring when compatible feedback devices are connected directly to the control section. This separation between control and power hardware supports flexible drive layouts in compact cabinets.