Product Description:

The CDB01.1C-S3-NNN-NNN-NNN-MA1-L2-S-NN-FW control unit is produced by Bosch Rexroth Indramat as part of the CDB Control Units series. It mounts on a Rexroth drive stack and supplies central command and communication for two-axis inverters through the SERCOS automation network. Within a machine, the module translates higher-level program data into drive setpoints so that motion sequences stay synchronized with machine logic. Because it sits at the control layer of the drive stack, it links motion commands from the automation system with the response of the connected inverter axes. That helps synchronized machine sections start, stop, and change speed together during normal operation. It has a low internal power demand that suits cabinet designs focused on energy efficiency.

Its base electronics draw only 9 W under idle conditions, minimizing heat buildup in compact enclosures. The primary fieldbus is SERCOS III, and the card can coordinate up to two drives because the controlled-axes parameter is 2. During initial energization, the input stage tolerates an inrush of 6 A before settling to normal load. Motion and analog processing are handled through the MA1 interface, which provides 2 input channels, 2 output channels, and 12 bit conversion accuracy for each signal. These analog channels support the exchange of reference values and monitored signals between the drive system and external machine electronics. The module operates as a slave in cross-communication cycles, accepting telegrams from a higher-level master and passing them along through its two SERCOS ports. Network wiring terminates on a RJ-45, 8-pin jack, enabling direct connection of standard Cat-5e cables.

For network timing, the link layer clocks at 100Base-TX, letting the daisy-chain ports sustain real-time telegram periods without added switches. Functional safety is integrated, and the drive enable line is cut by the Safe Torque Off circuit when a stop request arrives. This STO channel is acknowledged at 24 V DC / 1 A through a D-Sub, 9-pin female connector, and the opto-isolated input draws only 3 mA, so it can be driven directly from common safety relays. This arrangement is suitable for multi-axis packaging, handling, and machining cells that require coordinated motion and integrated safety.