Product Description:

The CDB01.1C-ET-ENS-ENS-EN2-NNN-S2-S-NN-FW is a modular control unit produced by Bosch Rexroth Indramat for the CDB Control Units series. Installed on a Rexroth power section, the board handles fieldbus communication, sensor power distribution, and relay interfacing so that the associated servo drive can coordinate motion axes and safety circuits in automated machinery. By combining network, encoder, and I/O resources on one plug-in card, the unit reduces wiring complexity in multi-axis production lines. Its placement on the drive assembly also keeps control and feedback connections close to the power stage for consistent signal handling.

During operation, the electronics draw a base load of 9 W, which helps limit heat buildup inside a closed cabinet. All logic is supplied from an external DC 24 V feed, and a startup inrush of 6 A must be considered when selecting circuit protection. Machine networks connect through an Ethernet port conforming to 100Base-TX, while a service socket supports parameter transfer at up to 115 kBaud over RS-232. The ENS auxiliary channel can supply up to 500 mA for light curtains, proximity sensors, and similar peripheral loads. That auxiliary supply adds 6 W of module dissipation during operation.

The EN2 encoder supply draws its own 6 W and can source 350 mA at a sensed 5.0 V rail, supporting incremental or absolute feedback devices. For network isolation, the ET communication block requires only 2.2 W, keeping added heat from the communication section relatively low. Safety logic is handled by the S2 segment, which delivers 0.5 A to control outputs and switches external contactors through a relay rated at DC 24 V / 1 A. The stabilized ENS reference of 11.6 V provides clean power for optical guards. This arrangement allows the board to support feedback, communication, and safety-related peripheral functions from the same control platform.