Product Description:

The CDB02.1B-ET-EC-EC-PB-NN-NN-NN-NN-FW control unit is produced by Bosch Rexroth Indramat as a member of the CDB Control Units series. Designed for multi-axis IndraDrive systems, it combines motion commands, sensor feedback, and network communication on one sub-rack card. In an automation cabinet, this unit links servo inverters to higher-level controllers, allowing analog, digital, and Ethernet signals to be processed without separate interface modules. This arrangement helps centralize signal handling inside the drive system and reduces the need for additional external interface hardware.

Analog channels occupy two ±10 V input jacks that are digitized with a resolution of 14 bit, giving fine granularity for speed or torque references. Outgoing setpoints leave the board through two ±10 V drivers that step in increments of 24 mV/incr, matching the converter resolution of the attached power stage. The Ethernet port follows the 100Base-TX standard for 100 Mbit throughput. Physical connection is made through an RJ-45, 8-pin jack, simplifying wiring with standard patch cables. Fourteen discrete inputs handle status and limit switches, and eight terminals are configurable digital I/O. The count of 8 allows these terminals to be assigned to different control functions as needed.

For fieldbus coupling, the board carries a PROFIBUS interface that exchanges cyclic data and diagnostics through a nine-pin D-Sub socket. Protocol timing and telegram structure follow DIN EN 50170, allowing the drive node to communicate with PLC platforms from multiple vendors. The driver stage for dedicated digital outputs can source or sink up to 500 mA, supporting contactors or indicator lamps without external relays. Four probe inputs capture high-resolution position latches, and four optional slots accept encoder or expansion cards. When galvanic isolation is required, the onboard relay contacts can switch control voltages up to 30 V, providing separation between logic domains and peripheral coils.