Product Description:

The CDB02.1B-ET-EC-EC-EC-L3-L3-EC-NN-AW control unit is produced by Bosch Rexroth Indramat as part of the CDB Control Units series. It serves as the intermediate interface between IndraDrive power sections and higher-level PLCs, coordinating servo axes and machine peripherals in industrial automation. The device houses dual Ethernet ports for drive networking and accommodates incremental or absolute encoders, allowing the connected motion system to receive position, velocity, and diagnostic feedback without external signal conditioning. Within multi-axis cabinets, the module is mounted on DIN rail and provides central processing for current, velocity, and position loops without additional daughter cards.

Its energy demand remains fixed at 23 W of base power, so auxiliary supply sizing is straightforward. Servo dynamics are handled in real time; the current loop closes every 125 µs, velocity corrections follow each 250 µs, and positional interpolation updates at 500 µs. These timing layers allow smooth torque production even on fast pick-and-place gantries. For discrete sensing, the controller accepts 14 digital inputs, while eight of them can be reassigned as output lines, enabling command and sensor acknowledgment signals without rewiring.

In analog domains, the board includes 2 analog inputs for ±10 V transducer signals and 2 analog outputs for reference values to external drives or actuators. Network traffic is carried over two RJ-45 8-pin sockets that follow the 100Base-TX standard, and automatic daisy-chaining is supported through the dual-port arrangement. Safe shutdown magnets or brakes can be driven directly, with the safety output channel supplying up to 350 mA. Four probe inputs capture latch events, and separate 12 V and 5 V encoder supplies each source 500 mA for feedback devices.