Product Description:

The CDB01.1C-ET-ENS-ENS-EN2-NNN-NN-S-NN-FW is a control section from the CDB Control Units series produced by Bosch Rexroth Indramat. It attaches to a compatible power module to supervise dual-axis servo drives in packaging lines, material-handling cells, and other automated equipment. By combining Ethernet-based fieldbus links with integrated encoder interfaces, the board supplies the logical layer that synchronizes motion commands, collects position feedback, and manages protective shutdown sequences during machine operation. This arrangement allows one module to coordinate communication and feedback handling for paired axes within the same drive platform.

The board’s base consumption is 9 W, so cabinet thermal planning can account for its steady heat load. Command traffic moves through a Multi-Ethernet interface that automatically selects protocols while using the 100Base-TX physical layer, and cables up to 100 m can be used without repeaters. Two independent axis controllers are provided, giving the unit control over 2 axes with deterministic interpolation. At start-up the circuitry can draw an inrush of 6 A, so line protection must accommodate this transient. The separate ET communication core needs only 2.2 W, which helps limit additional heat near the RJ45 jacks. Digital pulse outputs are limited to a 60 ms maximum width, which helps prevent unintended long-duration gate signals. The communication and control functions are therefore kept on the same section without requiring separate fieldbus and feedback boards.

The En2 incremental channel supplies encoders with 5.0 V and supports square-wave feedback up to 1000 kHz, while its current limit protects sensor wiring from overload. Each Ens absolute encoder interface provides 6 W and allows 500 mA draw while sourcing 11.6 V for transducers that require higher excitation. To reject high-frequency noise, the Ens filter network imposes a cutoff at 500 kHz, helping maintain clean position data when motors operate with fast current loops. These encoder connections let the control section work with both incremental and absolute feedback devices in the same drive system.