Product Description:

The CDB01.1C-SE-ENS-ENS-NNN-NNN-S1-S-NN-FW is a control section from the CDB Control Units series manufactured by Bosch Rexroth Indramat. Installed in an IndraDrive power module, it governs two motion axes and coordinates torque, speed, and position loops for motors used in packaging, handling, or assembly equipment. It also provides the communication and feedback interfaces needed for closed-loop industrial automation. The control section works as the central logic layer between the upstream machine controller and the connected power stage.

A regulated supply of 24 V DC keeps the logic active even when line power is removed. The unit has 18 optically isolated digital inputs, allowing it to read limit switches, sensors, and PLC status signals. The encoder socket accepts IndraDyn/Hiperface/1 Vpp signals, so it can process absolute or incremental feedback without external converters. Torque demand is refreshed every 125 µs in the current-control loop, and the inverter stages are modulated at 4 kHz to help reduce motor ripple. One analog input, two analog outputs, a single normally open relay contact, and two touch-probe inputs complete the local I/O for reference values and fast position capture.

Deterministic axis coordination is handled over the SERCOS network, and telegrams can be exchanged every 1000 µs to match multi-axis machine cycles. Position commands are recalculated within 500 µs, while velocity regulation updates every 250 µs to support smooth contouring at high feed rates. The integrated Safety Technology I/O channel supports SIL-compatible emergency stop and safe torque off chains without separate hardware. An RS232 service port is shared by the axes, and status information can be reported through the master communication ring. The section connects to the power electronics while remaining electrically isolated from the upstream control voltage.