Product Description:

The CDB02.1B-ET-EC-EC-EC-S4-S4-NN-NN-AW control unit is produced by Bosch Rexroth Indramat and belongs to the CDB Control Units series. Serving as a plug-in command section for IndraDrive converters, it supervises current, velocity, and position loops while coordinating fieldbus traffic. By combining encoder feedback, local I/O, and integrated safety on one board, it functions as the central motion controller for multi-axis packaging, printing, and handling systems in industrial automation. Because it works as a plug-in section within the drive platform, motion control functions remain closely linked to the related power stage and feedback channels.

It provides 14 digital inputs for limit switches, sensors, or PLC handshake signals, and 8 configurable I/O points that can be set as inputs or outputs to match machine wiring. For proportional variables, the board carries 2 analog inputs that accept ±10 V process data and 2 analog outputs that deliver reference values to external devices. Motion feedback is connected through 3 multi-encoder interfaces, each able to supply up to 500 mA to the transducers so several linear or rotary encoders can operate at the same time. Four probe inputs capture exact edge positions, two Safe Motion channels stop an axis when guards open, and the Multi-Ethernet port supports deterministic exchange with higher-level control systems. This arrangement allows the unit to handle discrete signals, analog references, and encoder feedback within the same machine section.

Loop timing includes a 500 µs position control cycle, a 125 µs current control cycle, and a 250 µs velocity control cycle, enabling tight regulation in demanding servo applications. The short loop intervals reduce latency between encoder updates and torque correction during rapid motion changes. External communication conforms to 100Base-TX, allowing real-time traffic for EtherNet/IP, PROFINET, or EtherCAT masters. High-speed encoder processing supports accurate interpolation at elevated motor speeds, with a 400 kHz sine-signal bandwidth and a 1000 kHz square-wave input range.