Product Description:

The CDB02.1B-ET-EC-EC-EC-S4-S4-DA-NN-FW control card is manufactured by Bosch Rexroth Indramat and belongs to the CDB Control Units series. Installed in an IndraDrive modular drive assembly, the card acts as the central processor that links axis encoders, analog transducers, and real-time Ethernet networks with the power modules. By converting sensor feedback into deterministic motion commands, it coordinates servo axes, conveyors, or gantries so that automated machines maintain precise speed, torque, and position references during production.

It operates from a nominal control supply of DC 24 V, providing consistent logic power to the I/O section and network interface. Network communication is handled through an 100Base-TX interface; the controller presents two ports, each using an RJ-45, 8-pin connector so daisy-chain topologies are possible. Supported protocols include SERCOS III, EtherCAT, EtherNet/IP, and PROFINET IO, allowing the module to integrate with mixed-vendor PLC environments. For sensor conditioning, the DA extension supplies two analog inputs, two analog outputs, six digital inputs, and six digital outputs, enabling direct connection of pressure sensors, servo-ready signals, or valve coils. Separate encoder supplies deliver 500 mA at 12 V and 500 mA at 5 V, letting the unit power either TTL or HTL feedback devices without external regulators.

The encoder outputs are limited by an overall budget of 6 W, allowing multiple feedback channels as long as their combined demand stays within this value. When resolver transducers are used, the card supplies an excitation carrier at 8 kHz, which the drive evaluates for precise rotor angle reconstruction. For high-resolution sine encoders, the input chain maintains linearity up to 400 kHz, while square-wave sensors can be decoded at frequencies as high as 1000 kHz. Two configurable I/O lines in the DA section can be assigned as triggers or status bits, giving flexibility for handshake tasks without adding external terminals.