Product Description:

The CDB02.1B-ET-EC-EC-EC-L3-L3-NN-NN-FW control unit is produced by Bosch Rexroth Indramat and belongs to the CDB Control Units series. Designed as a plug-in automation component, it coordinates motion and safety functions for dual-axis IndraDrive power sections in industrial machines. By managing encoder feedback, analog scaling, and fieldbus communication in one module, the unit delivers synchronized torque, speed, and position control across packaging, material-handling, and assembly processes. It is intended for machines that require coordinated motion, signal handling, and integrated safety support in a compact drive architecture.

Its two differential analog channels accept ±10 V references and work with an analog input bandwidth of 1.3 kHz, so the command loop reacts to fast setpoint changes without extra filtering. Position references are digitized at 13-bit analog input resolution, giving 8192 discrete levels and reducing quantization error. A 50 dB common-mode rejection figure helps the converters ignore noise that appears on both input lines. Network coupling is handled through Multi-Ethernet communication, allowing real-time exchange with EtherNet/IP, PROFINET, or EtherCAT hosts. For discrete supervision, the board provides 14 digital inputs that can be mapped to limit switches, homing sensors, or interlocks. It also offers two analog outputs, two multi-encoder interfaces, four probe inputs, eight configurable digital I/O points, and four option slots.

To support external hardware, the module supplies an L3 output current of 350 mA, which is sufficient for encoder reference tracks or small proximity sensors. Functional safety is embedded through STO on both axes, so a single wiring scheme can remove drive torque on demand. High-speed capture tasks use an internal comparator that follows sinusoidal encoder signals up to a sine input cut-off of 400 kHz, while incremental square-wave tracks can be processed at up to a 1000 kHz square-wave input frequency. These limits help the feedback channels remain reliable during rapid acceleration and deceleration.