Product Description:

The CDB02.1B-ET-EC-EC-EC-S5-S5-EM-NN-FW is a control section manufactured by Bosch Rexroth Indramat for the CDB Control Units series. When mounted on an IndraDrive power module, it handles current, speed, and position regulation for connected servo axes, forming the real-time bridge between the drive hardware and the machine PLC. All motion processing, network communication, and safety monitoring are consolidated on this single plug-in card, supporting compact, synchronized multi-axis automation where cabinet space is limited.

Operation is powered by a logic supply of DC 24 V, feeding processors, safety circuits, and encoder excitation. The current loop is refreshed every 125 µs, delivering high torque bandwidth, while the velocity regulator updates at 250 µs. A full trajectory calculation completes each 500 µs position loop, preserving path accuracy under load changes. Fieldbus telegrams travel through a Multi-Ethernet port that employs the 100Base-TX physical layer, and the 500 µs communication interval aligns drive data with PLC scan times. Four optional slots let the user add interface or feedback cards without altering the base cycle structure.

For machine wiring, the module provides 14 digital inputs rated for 24 V logic. Signal conditioning of process variables is served by 2 ±10 V analog inputs plus a matching pair of analog outputs, and eight configurable I/O points can be assigned as additional inputs or outputs. Feedback flexibility is enhanced by 3 × multi-encoder interfaces, and an encoder emulation port can simultaneously retransmit position data to downstream axes. Functional safety is integrated through 2 × Safe Motion (S5) channels that supervise speed and stop conditions independently of the main motion firmware.