Product Description:

The CSB02.1B-ET-EC-NN-NN-DA-NN-AW is a drive controller module from the CSB Drive Controllers series manufactured by Bosch Rexroth Indramat. Installed inside multi-axis cabinets, it supervises power stage modules and exchanges real-time data with higher-level PLCs to coordinate positioning, velocity, and torque loops in automated machinery. It serves as the central control layer for connected axes, handling command distribution and feedback processing without adding significant load to the cabinet supply.

This controller draws only 17 W from a separate DC 24 V logic supply, minimizing panel heat load while leaving the bulk of bus power for the connected drives. Network traffic is handled through a Multi-Ethernet interface that supports standardized protocols across a single port, and electrical signaling complies with 100Base-TX so common industrial switches can be used without media converters. Three on-board differential input channels accept ±10 V feedback for process variables, giving the unit 3 analog inputs before any optional expansion cards are added. Internal digital-to-analog generation uses 12-bit current granularity so command values can be adjusted in small steps before they reach the downstream inverters.

On the discrete side, the controller provides 11 digital inputs that can capture limit switches or encoder zero signals before the PLC scan, helping the axis respond quickly to state changes. Motion precision benefits from 14-bit DA voltage resolution, and each command value is refreshed every 250 µs to keep torque or speed references consistent during dynamic load changes. For auxiliary actuators, an isolated relay can switch up to 1000 mA relay output at 30 VDC, which often removes the need for an external interpose relay. The available I/O also lets separate process signals and simple machine states be brought directly into the controller instead of relying on expansion hardware for basic connections.