Product Description:

The CSB02.1B-ET-EC-PB-S4-EM-NN-FW is a drive controller built by Bosch Rexroth Indramat as part of the CSB Drive Controllers series. The unit serves as the central control section for servo axes, translating fieldbus commands into regulated motor currents and position feedback used in automated machinery. By combining multi-network communication with dedicated encoder processing, the device coordinates motion sequences and safety states inside compact production cells, conveyor lines, and handling systems where deterministic control and integrated protection are required.

For signal acquisition, the controller offers an analog input path with a bandwidth of 1.3 kHz, allowing rapid tracking of process variables without aliasing under normal sample rates. Outgoing reference values are converted to voltage levels in steps of 24 mV per increment, so drives receive finely graduated commands. When higher precision is needed, the extended input path provides a resolution of 13-bit, reducing quantization error for closed-loop positioning. The controller has 11 digital inputs that accept binary states from limit switches or sensors, and they are scanned within an internal cycle of 750 µs, matching shorter PLC scan times. The multi-encoder interface supplies the measuring devices with up to 500 mA at 12 V, accommodating incremental, absolute, or emulated feedback units without external power rails.

The analog outputs require a minimum load of 2 kΩ, so standard drive amplifiers or instrumentation buffers can be connected directly. Two Form C relays rated for currents up to 1000 mA and voltages up to 30 V handle ready, fault, or brake release signals without separate interposing contactors. Three optional slots allow encoder emulation or extra I/O, while the built-in PROFIBUS auxiliary channel complements the primary Multi-Ethernet link for mixed-network plants. Safe Motion technology supervises speed and position internally, enabling certified shutdown paths without additional hardware.