Product Description:

The CDB02.1B-ET-EC-EC-NN-S4-S4-NN-NN-NW is a control unit manufactured by Bosch Rexroth Indramat and supplied in the CDB Control Units series. Within an automation rack, it delivers the command processing needed to regulate current, velocity, and position loops for drives that communicate through Multi-Ethernet networks. The module supports standard encoder power rails at 12 V and 5 V, each rated for 500 mA, so it can energize two feedback devices without external supplies. Two analog input channels and two analog output channels, both scaled for ±10 V, provide direct interaction with torque or process reference signals.

Machine-level determinism depends on several timing parameters built into the controller. Current regulation refreshes every 125 µs, while position corrections close in 500 µs; these cycle times coordinate with the velocity loop to maintain axis stability. Motion functions are protected by the integrated Safe Motion package on both axes, allowing certified shutdown or monitoring routines without separate safety hardware. The unit provides 8 configurable digital I/O, letting a PLC map sensors or interlocks directly to the real-time kernel. Encoder feedback arrives through two Multi-encoder interfaces, so EnDat, Hiperface, or similar formats can be mixed in a single installation. Four optional plug-in slots are reserved for fieldbus or additional I/O boards, and the RJ-45 connectors route Multi-Ethernet traffic to higher-level controllers.

Velocity updates run every 250 µs, a midpoint between the current and position loops that smooths speed transitions. Deterministic network wiring is maintained through the RJ-45, 8-pin Ethernet ports, supporting star or line topologies without re-terminating cables. Local command handling is expanded by 14 digital inputs for limit switches or mode selection and by 4 probe inputs that create precise latch events during metrology tasks.