Product Description:

The CDB02.1B-ET-EC-EC-PB-L3-L3-NN-NN-FW is a dual-axis control unit produced by Bosch Rexroth Indramat for the CDB Control Units series. Designed to mount inside an IndraDrive modular system, the device coordinates power sections and connected feedback devices so servo axes receive deterministic current loops and safety supervision. Within an automation cell it works as the command interface between higher-level controllers and drive inverters, enabling synchronized motion and integrated emergency shutdown through its built-in functional safety channels.

The electronics draw a basic power of 23 W from a control supply of DC 24 V, so cabinet converters can size auxiliary rails with minimal overhead. For both axes the current loop refreshes every 125 µs, providing high bandwidth torque regulation that keeps jitter low on fast indexing machines. Local wiring is simplified by twenty-two logic channels; 14 are dedicated inputs, while eight are configurable as either inputs or outputs. Each axis implements the STO function; by removing gate drive, Safe Torque Off eliminates residual motor energy without external contactors during category 0 stops.

Network communication is handled by the built-in Multi-Ethernet platform that supports several real-time protocols over the physical layer defined in IEEE 802.3. A dedicated fieldbus slot provides a PROFIBUS master/slave interface so legacy PLCs can exchange cyclic and acyclic data; its electrical layer conforms to EIA-RS485, allowing multi-drop cabling up to 12 Mbit/s with isolated transceivers. Two analog inputs and two analog outputs serve process variables such as load cells or valve setpoints, and four spare option slots let users add encoder cards, additional safety modules, or extra fieldbus channels without replacing the base unit.