Product Description:

Bosch Rexroth Indramat manufactures the CDB02.1B-ET-EC-EC-PB-S4-S4-NN-NN-FW control unit for the CDB Control Units series. The device is designed to mount on a power section and act as the intelligence layer for servo, spindle, or hydraulic axes in automated machinery. It processes setpoints, converts feedback, and relays status data so that higher-level PLCs can execute precise motion profiles. Integrated communication and safety terminals allow the module to coordinate several axes without adding external interface boards.

During operation, the controller draws a base load of 23 W and can reach a configured ceiling of 34.0 W once all internal resources are enabled. Network traffic is handled through a built-in 100Base-TX port, keeping parameter downloads and diagnostic uploads on standard Ethernet cabling. The unit has 14 discrete inputs for limit-switch or sensor states, while 8 software-assignable lines can be set as sources or sinks for auxiliary logic. Two analog voltage inputs and two analog voltage outputs support ±10 V motion commands. The card provides four optional slots and four probe inputs so additional encoder, fieldbus, or safety plug-ins can be installed without enlarging the cabinet footprint.

Feedback handling is tailored for both incremental and absolute encoders. Separate 12 V and 5 V rails each supply 500 mA to keep sensors stable under dynamic load. The input stage accepts EC square-wave signals up to 1000 kHz, maintaining counting accuracy that complements the digital-to-analog step size of 24 mV per increment. The safety circuitry is isolated from standard I/O; its enable channel draws no more than 5 mA, while the output side can source up to 350 mA to actuate contactors or brakes. When high-speed capture is required, the four probe channels latch edge events and distribute them through the previously described digital or analog paths without additional scaling.