Product Description:

Bosch Rexroth Indramat manufactures the CDB01.1C-PB-ENS-ENS-NNN-NNN-L1-S-NN-FW control unit as part of the CDB Control Units series. This plug-in module is designed for use inside IndraDrive drive stacks, where it coordinates servo axes by translating encoder feedback into bus-based motion commands. This arrangement keeps signal handling inside the drive assembly instead of routing raw feedback through a separate external controller. In an automation cell, it bridges the motor-side sensor system to the plant controller, executes onboard safety logic, and enables startup interlocks required for machinery that must recover predictably after power cycling.

The front terminal row supplies an analog reference of 5 V on channel O A 1. Two feedback paths are provided through two ENS interfaces, and each channel digitizes incremental encoder signals at 12-bit resolution. Input lines present a termination impedance of 120 ohms, and the internal sensor rail can deliver up to 500 mA to external transducers. Electrical connection for both feedback ports is made through a D-Sub 15-pin female connector. With a depth of 103 mm, the card fits into shallow control cabinets without exceeding standard enclosure footprints. The ENS inputs are additionally protected by the Starting Lockout safety option, which prevents unexpected motion when feedback is absent.

Field-level communication is handled by PROFIBUS-DP on an EIA-RS485 physical layer and uses a D-Sub 9-pin female connector that follows DIN EN 50170 pinout rules. A bus repeater socket sources +5 V at 75 mA for external line extenders, reducing the need for auxiliary supplies. Overall height is 322.6 mm, and the module’s slim profile of 49.5 mm allows dense side-by-side mounting next to other drive electronics. The narrow housing also leaves more room for adjacent modules and cable routing inside the cabinet.