Product Description:

The CDB01.1C-PB-NNN-NNN-NNN-NNN-L2-S-NN-FW belongs to the CDB Control Units series produced by Bosch Rexroth Indramat. This plug-in control section is installed in Rexroth drive converters to supervise motion, monitor safety, and exchange process data over a PROFIBUS network. Within an automation cell, it acts as the command interface between higher-level PLCs and the inverter power stage, shaping analog setpoints, switching digital outputs, and enabling the Safe Torque Off channel when a machine stop is required. Its role is centered on signal handling and coordinated control rather than on supplying motor power directly.

The unit provides analog velocity or torque references with a resolution of 19.5 mV/inc, and each channel can swing to a calibrated level of 5 V. For discrete signaling, it sources up to 500 mA per digital output, which is suitable for directly driving compatible contactors or indicator lamps. Internal protection against startup stress is handled by a limited inrush draw of 6 A, while continuous electronics demand stays at only 9 W, which helps reduce heat inside the cabinet. When coil-loaded devices such as solenoid brakes are connected, the driver absorbs up to 400 mJ of inductive energy to suppress flyback spikes that could disturb adjacent circuits. All messages are transported through the onboard PROFIBUS transceiver and a D-Sub 9-pin female connector, allowing single-cable daisy chaining between multiple axes in the same network segment.

The combined current supplied to the output group reaches 1000 mA, so several field devices can be powered without an auxiliary supply. Precise position capture is supported by probe inputs that detect rising or falling edges within 1 µs, and these inputs accept a logic level of 24 V with a minimum pulse width of 4 µs. Safe Torque Off is routed through a second D-Sub 9-pin female interface, letting the controller interrupt gate signals to both motor phases while retaining bus communication for diagnostic retrieval. This arrangement allows the control section to remain available for status exchange even when torque production has been disabled.