Product Description:

Bosch Rexroth Indramat manufactures the CDB01.1C-S3-ENS-ENS-EN2-EN2-L2-S-NN-FW control section within its CDB Control Units series. The board is mounted in Rexroth drive converters where it acts as the central axis processor and fieldbus interface, coordinating motion commands and safety signals for servo drives used in industrial automation. By housing the real-time processor, encoder inputs, and bus couplers, it lets machine builders tailor drive packages without changing the power electronics.

The unit controls 2 axes through deterministic motion loops. It exposes dual Ethernet sockets that follow the RJ-45, 8-pin pinout, so standard CAT5e cords can be used. Data moves over 100Base-TX, providing 100 Mbit/s for command traffic, while the protocol layer is Sercos III, giving phase-synchronous communication among drives and PLCs. Remote sensors and actuators are supplied by a nominal DC 24 V digital I/O rail that is internally fused. Two ENS feedback channels are routed to the X4.1 and X4.2 connectors, and two EN2 channels appear on X8.1 and X8.2, enabling mixed encoder topologies without extra breakout boards. A female D-Sub 9-pin header carries the safety wiring.

Beyond field networking, the board offers analog reference generation, and each channel can source 1 mA at up to 5 V for speed or torque setpoints. The EN2 logic is energized from a 5.0 V sense line and may draw 350 mA, whereas the ENS interface can consume 500 mA from an 11.6 V auxiliary bus. Functional safety is built in, and the hardware executes Safe Torque Off. The design is certified to SIL3 / Cat. 3 PLe, forcing the power stage to a torque-free state when the circuit opens. The unit is suitable for high-cycle packaging, material handling, and forming machinery.