Product Description:

Bosch Rexroth Indramat manufactures the CDB02.1B-ET-EC-EC-EC-S4-S4-EC-NN-FW, a control unit from the CDB Control Units series. The module is installed in IndraDrive systems to direct two servo axes, manage fieldbus traffic, and coordinate safety motion hardware in automated cells and machines. Its task is to act as the central processing layer that links drives, sensors, and higher-level PLCs so motion commands and diagnostic data move reliably across the installation.

Two analog input channels sample position or torque references at up to 1.3 kHz; each sample is digitized with a resolution of 14-bit so fine setpoint changes are preserved. The unit delivers two analog outputs, and every conversion cycle is completed in 750 µs, allowing rapid drive updates. Output granularity is fixed at 24 mV per increment, giving predictable voltage steps for inverter ramps. Even with both axes active and all analog ports enabled, base power draw is only 23 W, which simplifies cabinet thermal planning. Multi-Ethernet communication lets the controller exchange real-time data without selecting a single protocol in advance.

Logic circuits are supplied from a control bus at 24 V DC. The board handles two motion channels, each overseen by one of the two integrated Safe Motion modules, so SIL-related functions can be executed without extra hardware. Machine signals arrive through 14 digital inputs, and 8 configurable DIO lines provide flexible output options. Feedback is accepted over 4 encoder interfaces, enabling simultaneous use of incremental and absolute sensors. Network traffic follows the IEEE 802.3 Ethernet standard and can be routed via Sercos III, EtherCAT, EtherNet/IP, or PROFINET IO, allowing the CDB02 unit to integrate with varied PLC ecosystems while preserving deterministic timings for both axes.