Product Description:

The CDB01.1C-PB-EN1-EN1-EN2-EN2-NN-S-NN-FW is a control section from Bosch Rexroth Indramat for the CDB Control Units series. Installed inside a Rexroth drive assembly, this board coordinates feedback, fieldbus communication, and local I/O so the inverter can command synchronous and induction motors in automated machinery. By executing parameter sets and relaying motion data, the unit serves as the logic core that links higher-level PLCs to individual axes. It also centralizes signal handling within the drive, which helps reduce the need for separate interface boards.

Its fieldbus connector supports PROFIBUS-DP, allowing deterministic cyclic data exchange between the drive and plant controllers. During normal operation, the board draws a base power of 9 W, which must be considered when sizing cabinet power supplies. The two configurable analog outputs can drive loads down to 5 kΩ, and they resolve increments of 19.5 mV/inc for fine proportional command signaling. Four digital outputs deliver up to 500 mA in total, so small loads such as signal lamps or interfacing circuits can be driven directly. Probe inputs of type 2 and type 3, along with an RS232 maintenance port rated to 115 kBaud, complete the primary signaling resources.

Internal logic and sensors share an I/O rail that must provide 1.1 A at 24 V, while encoder channel 1 is energized from 8 V and encoder channel 2 from 5 V to keep the feedback interfaces electrically separated. When the drive powers up, the board can absorb a typical inrush of 6 A with a maximum pulse width of 60 ms, so upstream protection must tolerate that surge. The control section does not include integrated safety functions, so emergency-stop handling must be provided elsewhere in the drive system. Two probe inputs per channel support position capture, and the RS232 serial interface offers direct parameter access for setup and diagnostics.