Product Description:

The CDB01.1C-SE-ENS-ENS-NNN-MA1-L2-S-NN-FW control unit is manufactured by Bosch Rexroth Indramat as part of the CDB Control Units series. It is a plug-in control section for IndraDrive power stages, executing position, velocity, and torque loops for one or two servo axes while supervising integrated safety logic. By concentrating motion processing, I/O handling, and communication on a single printed circuit assembly, the unit reduces cabinet wiring and enables deterministic coordination of drives in packaging machines, printing presses, and material-handling cells. This layout also allows the power stage and control functions to work as one coordinated system, so command handling and feedback evaluation remain centralized within the drive.

During power-up, the control draws a base inrush current of 6 A, and the associated energy surge is limited to a maximum pulse width of 60 ms by onboard soft-start resistors before the draw stabilizes at a base power consumption of 9 W during steady operation. Fieldbus exchange is handled by the integrated SERCOS II interface, and the communication module itself adds 2 W to the internal thermal load. Digital outputs can source up to 500 mA, while the total current available to all low-voltage loads on the board reaches 1000 mA. Each safety encoder (ENS) option board contributes 6 W of additional load, so enclosure ventilation must account for the added heat. These electrical characteristics support stable communication, signal handling, and auxiliary board operation inside a compact drive assembly.

For feedback processing, two independent encoder ports accept 2 x IndraDyn/HIPERFACE®/1 Vpp signals, enabling simultaneous evaluation of main and auxiliary position loops without external splitters. The MA1 extension supplies two differential analog inputs and two analog outputs, while using a 12-bit converter resolution and a bipolar ±10 V signal range for interface tasks that require analog command or monitoring signals. Functional safety is provided by a Safe Torque Off circuit that is routed through the L2 connector, which is a 9-pin female D-Sub interface, allowing the drive to remove gate commands within the required reaction time. This arrangement supports direct integration with external safety circuits while keeping encoder, analog, and shutdown functions on the same control platform.