Product Description:

Bosch Rexroth Indramat’s CDB01.1C-S3-ENS-ENS-NNN-MEM-S2-S-NN-FW belongs to the CDB Control Units series and functions as a modular drive controller component for industrial automation. It hosts local and network interfaces so a main drive can exchange real-time status, position, and diagnostic data with higher-level PLCs and motion systems. By coordinating servo feedback and fieldbus traffic inside multi-axis cabinets, the unit streamlines axis synchronization and simplifies wiring in complex machines.

The device communicates with drives through the SERCOS III optical ring and exposes an auxiliary service port that uses a RJ-45, 8-pin connector for parameter access over Ethernet. Internal acquisition of encoder sine-cosine signals is handled by a converter bank that samples at 12-bit resolution, which sets the granularity of the digital position word before it is forwarded to the control loop. To protect signal integrity, the analog front end applies a bandwidth limit of 500 kHz, and the differential input pair presents 120 Ω of termination so external cabling is impedance matched. Two independent ENS interfaces accept incremental and SSI formats, letting the controller operate dual-loop feedback when required.

The encoder supply rail is regulated at 11.6 V and can source 500 mA, which is suitable for high-resolution optical read heads that draw more current than magnetic types. TTL marker channels are accepted up to 400 kHz, supporting high-speed spindle encoders without missed counts. Ethernet maintenance traffic conforms to the 802.3 physical layer, ensuring compatibility with standard switches over cable runs as long as 40 m while staying within the 10 nF load capacitance limit. A memory module outputs configuration data at 20 mA and clocks it at 1 MHz so the controller can read stored startup data reliably. For functional safety, the controller integrates the Safe Motion package, allowing certified stop and limited-speed modes to be triggered directly from the drive without an external relay circuit.