Product Description:

The CDB02.1B-ET-EC-EC-EC-S4-S4-EC-NN-AW is a double-axis drive controller section manufactured by Bosch Rexroth Indramat for the CDB Control Units series. Installed in an IndraDrive stack, it coordinates current, velocity, and position loops for two servo motors while exchanging data with higher-level PLCs over Multi-Ethernet links. Within an automation cell, it serves as the regulation core by interpreting encoder feedback, processing safe motion commands, and handling local I/O for synchronized machine movement. This layout allows one controller section to manage paired axes in tightly coordinated applications.

Its base power draw is only 23 W, which helps keep cabinet heat generation low. The hardware supervises 2 control axes, and loop updates are fast: torque is recalculated every 125 µs, speed every 250 µs, and position every 500 µs. This update structure helps the controller react quickly during acceleration changes, interpolation, and synchronized motion. Two ±10 V analog input channels acquire sensor signals, while two ±10 V analog outputs send reference values to external devices. Four probe inputs support edge-accurate registration tasks, and eight configurable I/O points can be assigned as additional inputs or outputs. Four optional slots accept plug-in cards so the controller can expand toward added communication, memory, or safety functions without replacing the base module.

Network communication passes through an RJ-45, 8-pin connector that uses 100Base-TX wiring for deterministic Ethernet traffic. Feedback flexibility is high because the unit provides 4 x Multi-Encoder ports that support Hiperface, EnDat, or SSI transducers for both axes plus two auxiliary channels. Machine signals are also gathered by 14 digital inputs, which are latched in sync with the control cycle to maintain timing accuracy during fast machine events. Functional safety is integrated by 2 x Safe Motion circuits, providing STO, SOS, and other stop modes without external relays. The analog outputs and optional slots support external signal exchange and expansion for application-specific control tasks.