Product Description:

The CDB01.1C-SE-ENS-ENS-NNN-MA1-NN-S-NN-FW is a control section produced by Bosch Rexroth Indramat for the CDB Control Units series. It plugs into an IndraDrive power module and supervises coordinated motion for servo axes in automated machinery. Inside the unit, signal processors handle position feedback from two ENS encoder channels and convert it into torque commands for the associated inverter stage, allowing precise multi-axis synchronization in packaging lines, pick-and-place gantries, and other industrial tasks.

The control section governs 2 axes and exchanges real-time data with the machine controller over the SERCOS II fiber-optic ring, providing deterministic communication for synchronized drives. Current loops close every 125 µs, so motor torque is updated at 8 kHz and following error is minimized during rapid profile changes. Internal logic and I/O electronics are supplied from a DC 24 V cabinet rail, and the board itself draws only 9 W, which helps keep enclosure heat low. Two analog MA1 inputs and two MA1 outputs share the same 5 mV per increment resolution as the drive’s main command channels, enabling finely graded velocity or torque references without additional converters.

The minimum telegram period on the ring can be reduced to 1000 µs, aligning network refresh with fast internal cycles while still leaving bandwidth for diagnostic messages. Velocity and torque commands entering the board are filtered with a control input bandwidth of 1 kHz, which prevents aliasing while preserving dynamic response. Each differential reference input presents an impedance of 1000 kΩ, so upstream controllers are not heavily loaded. During power-up, the board momentarily draws an inrush current of 6 A, so downstream fusing must tolerate that surge without nuisance tripping before the steady 9 W demand resumes.