Product Description:

The CDB01.1C-SE-ENS-EN1-NNN-MEM-NN-S-NN-FW is a control section supplied by Bosch Rexroth Indramat for the CDB Control Units series. Installed inside Rexroth drive controllers, the board handles motion commands, feedback processing, and fieldbus traffic for multiple servo drives during coordinated machine operation. By combining encoder evaluation and communication functions in one compact module, it supports positioning, speed, and torque control in factory automation lines and packaging equipment. Its role is to convert CNC or PLC instructions into synchronized electrical references for the connected power stages.

The board supervises 2 axes. Axis 1 uses the ENS evaluation channel, while axis 2 uses EN1, allowing the controller to work with different feedback types on the same card. Both channels receive power directly from the control unit, with the ENS port supplied at 11.6 V and the second channel powered internally for sensor operation. Motion data are exchanged with the master control system over the SERCOS II fiber-optic ring, which provides deterministic timing for synchronized drives. Bus communication is also supported by an SSI emulation stage that can output absolute or incremental encoder signals to downstream devices such as external PLC counters.

For auxiliary interfaces, the card delivers up to 500 mA of current on the ENS sensor supply and transfers position words on the MEM connector at 1 MHz. This connector supports cable lengths up to 40 m without signal repeaters, which helps maintain stable data transfer across the installation. For high-speed cyclic communication, the minimum SERCOS update can be set to 1000 µs. Service diagnostics are available through an RS-232 port operating at 115 kBaud, and a standard control panel with a single-line display provides local parameter access. Safety functions are handled by external circuitry because the card does not include integrated safety technology.