Product Description:

The CDB02.1B-ET-EC-EC-NN-L3-L3-NN-NN-FW is a motion-control electronics module produced by Bosch Rexroth Indramat and assigned to the CDB Control Units series. Installed in a drive cabinet, the unit coordinates current, velocity, and position loops for multiple servo axes while exchanging process data with higher-level PLCs. Its role in an automation cell is to execute these control functions deterministically so the connected drives can follow commanded profiles with minimal jitter.

This control unit draws a base load of 23 W from a logic supply rated at DC 24 V. Field devices connect through 14 dedicated digital input channels and eight additional configurable digital I/O points, while two analog voltage inputs and two analog voltage outputs extend the available interface options. The unit executes the current loop every 125 µs, and the resulting torque commands feed a velocity loop that is recalculated every 250 µs. The position regulator closes at 500 µs intervals, and two probe inputs per axis allow accurate capture of position latches while four optional slots accept communication or safety add-on cards without increasing the footprint.

Network traffic runs on a 500 µs cycle over the integrated Multi-Ethernet interface, which supports common industrial protocols without additional hardware. For encoder feedback, the module provides 2 x Multi-encoder ports that accept EnDat, Hiperface, or incremental formats, allowing mixed motor feedback types in the same system. Functional safety is handled through dual-channel 2 x STO inputs that remove drive torque when either channel is interrupted. The available feedback, safety, and I/O connections support homing routines, sensor gating, and coordinated multi-axis control in automated machinery.