Product Description:

The CDB01.1C-PB-ENS-ENS-NNN-MEM-NN-S-NN-FW is a modular drive controller component manufactured by Bosch Rexroth Indramat as part of the CDB Control Units series. Installed in Rexroth inverter racks, this unit provides axis-level processing for motion tasks and distributes encoder feedback to the drive. It acts as the interface between higher-level PLCs and the power stage, translating network commands into precise analog or digital signals used for industrial automation. By handling command processing and feedback distribution inside the rack, it supports coordinated axis control in automated equipment.

The controller operates from a base supply of DC 24 V, and its internal electronics draw only 9 W, which helps limit panel heat dissipation. Field devices receive commands through PROFIBUS, and two ENS encoder ports accept SSI or incremental signals while the board can emulate either protocol for legacy compatibility. That flexibility helps the module connect to older feedback devices already installed on existing machines. Analog setpoints leave the card with a granularity of 19.5 mV/inc, while the nominal output level is 5 V for direct connection to standard servo drives. All auxiliary loads, including encoder supply and I/O, share a combined budget of 0.5 A, so connected accessories must stay within that margin. The ENS ports deliver 11.6 V at 500 mA to transducers, and RS-232 configuration is available through the service interface.

During startup the control unit can momentarily pull 6 A, and this inrush lasts only 60 ms, so upstream fusing must tolerate the brief surge. MEM signaling is optimized for high-speed position latching, driving a square-wave reference at 1 MHz over cable runs up to 40 m without signal repeaters. The asynchronous service port sustains data exchanges at 115 kBaud, supporting diagnostics while the fieldbus remains active. This arrangement allows service access without interrupting the main network connection.