Product Description:

The CDB02.1B-ET-EC-EC-NN-S4-S4-DA-NN-FW is a dual-axis control unit from the CDB Control Units series manufactured by Bosch Rexroth Indramat. It serves as the central processing module inside an IndraDrive drive stack, coordinating feedback, safety, fieldbus communication, and local I/O so connected servo inverters can execute precise motion profiles. By hosting encoder interfaces, digital switching logic, and Ethernet ports on one card, the device reduces panel wiring and acts as an automation node between the higher-level PLC and the power sections that energize motors.

To operate, the board requires a supply of DC 24 V, and its base electronics draw 23 W at that voltage. Two add-on circuits influence the overall energy budget, with the ET communication module consuming 2.7 W and each S4 safety module adding 2.5 W. Signal exchange is handled through 14 dedicated digital inputs and 8 configurable digital lines that can be programmed as inputs or outputs. An internal digital and analog I/O extension slot allows channel expansion. The analog section provides a resolution of 24 mV/incr, enabling accurate voltage references for external actuators or sensors.

Both motion axes connect through a multi-encoder interface, so Axis 1 and Axis 2 can process data from incremental, SSI, or EnDat sensors without extra converters. Safe Motion is available on each axis, letting the unit supervise speed, standstill, and direction independent of the main PLC. Network integration relies on Multi-Ethernet, allowing concurrent PROFINET, EtherNet/IP, or EtherCAT communication. The sourcing stage delivers up to 500 mA per digital output, and the onboard relay contacts are rated for 30 V DC switching. The unit also has 4 dedicated probe inputs that capture edge events with microsecond precision for synchronized motion control.