Product Description:

The CSB02.1B-ET-EC-EC-L3-NN-NN-AW is a compact drive controller from Bosch Rexroth Indramat and belongs to the CSB Drive Controllers series. The unit forms the electronic core of modular servo systems by supplying low-voltage logic power, monitoring motion, and passing fieldbus data between the machine PLC and connected motors. It coordinates torque, speed, and position loops so that packaging lines and gantries can run repeatable cycles. OEMs mount the device on DIN rails inside distributed cabinets without adding separate interface boards.

Normal operation draws a regulated supply of 24 V DC, and the internal electronics dissipate only 17 W, minimizing cabinet heat. Two analog outputs relay speed or torque references to auxiliary devices, and each transistorized digital output can source up to 500 mA, enough to drive interposing relays or indicator lamps. Communication is handled through an RJ-45, 8-pin connector that follows the 100Base-TX Ethernet standard; the built-in Multi-Ethernet interface lets the controller appear on EtherNet/IP, PROFINET, or Sercos networks without hardware changes. Functional safety is provided by the certified Safe Torque Off channel, which removes gate signals to the power stage whenever the monitored input is deasserted.

Startup current is limited; the inrush never exceeds less than 5 A and lasts only 1 ms, protecting upstream power supplies. Encoder peripherals are supported by a 5-volt rail that can deliver 500 mA with a maximum power draw of 6 W, ensuring feedback devices remain powered during rapid traverses. Two differential probe inputs allow high-speed position latching, and the unit provides 11 digital inputs for standard control signals when sub-micron accuracy is required. For safety signaling, the STO output can source 350 mA toward external contactors, while the fieldbus carries diagnostic or process data to the supervisory PLC.