Product Description:

The CDB01.1C-SE-ENS-ENS-MEM-MA1-S1-S-NN-FW control unit belongs to the CDB Control Units series produced by Bosch Rexroth Indramat. It is a modular drive controller component intended for mounting beside power inverters inside Rexroth automation cabinets. The device handles SERCOS II real-time communication, encoder processing, and integrated safety channels so that multiple servo axes can be coordinated from a central PLC without separate interface cards. In a production line, the unit translates network telegrams into precise drive commands while simultaneously supervising field-level safety inputs and outputs. This arrangement keeps communication, feedback handling, and safety functions in one housing for compact multi-axis control.

Under nominal conditions, the controller electronics consume only 9 W, which helps limit cabinet heat. The ENS expansion supplies encoder power and can deliver up to 500 mA at 11.6 VDC, while returning position information with a differential amplitude of 1.0 Vpp. Two analog inputs and two analog outputs are provided by the MA1 module; each channel is digitized at a resolution of 12 bit and can source or accept signals within a range of ±10 V. These resources allow the controller to process analog reference values, external sensor signals, and encoder feedback within the same control platform.

The MEM interface produces high-speed absolute position words, and its output frequency reaches 1 MHz. Data are sent in the SSI Absolute format for compatibility with linear scales and multi-turn encoders. Safety terminals operate with a field supply of 24 V, draw approximately 3 mA per input, and can switch up to 0.5 A on each safe output to actuate contactors or relays. For network timing, the SERCOS II channel supports a maximum ring rate of 16 MBaud, allowing synchronous position updates while the controller manages analog channels, encoder signals, and safety-related I/O.