Product Description:

The CSB02.1B-ET-EC-EC-L3-DA-NN-FW is a drive controller built by Bosch Rexroth Indramat for the CSB Drive Controllers series. It manages motor torque, speed, and position by coordinating encoder feedback with commands from higher-level PLCs over real-time networks. The unit fits assembly lines, packaging cells, and material-handling stations that need rapid setup and integrated functional safety.

Network integration is handled through Multi-Ethernet communication on the 100Base-TX physical layer and accessed by an 8-pin RJ-45 jack, allowing rapid peer-to-peer exchange with PLCs, HMIs, and diagnostic tools. The controller's analog drive outputs are updated every 250 µs, so the speed loop can react within a quarter of a millisecond. Current commands are digitized with 12-bit precision, minimizing quantization error when small torque corrections are required. Separate 12-volt and 5-volt encoder supplies each deliver 500 mA to support incremental, sine-cosine, or absolute sensors, and both primary and secondary connections use a multi-encoder interface for flexible feedback selection. The STO channel disengages power to the motor without affecting fieldbus traffic, providing a certified method for safety stops.

The drive's voltage command path refines those current-mode updates: each digital-to-analog stage offers 24 mV/Incr granularity and an overall 14-bit voltage resolution, allowing fine scaling of velocity or pressure references sent to external amplifiers. Discrete inputs attached to the L3 port are interpreted as high when they exceed 11 V and low when they fall below 5 V, simplifying wiring of standard sensor blocks. When extra machine signals are needed, a digital/analog I/O extension board can be added, keeping signal paths short and resistant to noise during rapid motion sequences.