Product Description:

The CDB02.1B-ET-EC-EC-EC-SB-SB-NN-NN-FW is a control unit from Bosch Rexroth Indramat for use in the CDB Control Units series. Installed inside IndraDrive power sections, it coordinates two servo axes, exchanges data with higher-level PLCs, and supervises machine safety states. Its role in industrial automation is to translate network commands into precisely timed drive signals while collecting motion feedback required for synchronized, error-tolerant production. This arrangement allows the control section and power section to operate as a tightly integrated drive platform rather than as separate cabinet devices.

The controller is designed for dual-motor installations, providing closed-loop regulation across 2 axes while being powered from a control supply of 24 V DC. Command data move through a Multi-Ethernet port, so Profinet, EtherNet/IP, or EtherCAT topologies can be selected without changing hardware. For discrete machine feedback, the unit provides 14 digital inputs that accept limit switches, light curtains, or cam followers. Inboard expansion is available through 4 optional slots that accept safety, encoder, or fieldbus plug-ins. This layout keeps cabinet wiring short because sensors land directly on the control card, and it also supports compact machine designs that need multiple interface types in one location.

Complementing those discrete lines, the unit supports 8 configurable digital I/O points that can be assigned as outputs for valve control or as auxiliary inputs. Core electronics dissipate only 23 W, so heat load inside sealed enclosures remains modest. Both internal drive channels monitor safe operating functions over the Safe Motion Bus, reducing the need for separate external relay logic. Position feedback for Axis 1, Axis 2, and the third auxiliary interface is processed through a Multi-Encoder Interface, allowing the same control unit to work with EnDat, SSI, or incremental signals. Four probe inputs capture real-time edge events, while two voltage analog inputs and two voltage analog outputs support proportional references and process feedback loops.