Product Description:

The CDB01.1C-SE-ENS-ENS-ENS-NNN-L2-S-NN-FW is a modular control section produced by Bosch Rexroth Indramat for the CDB Control Units series. This component slides into IndraDrive power sections and supplies the command layer for multi-axis servo systems. By interpreting encoder signals, monitoring I/O, and communicating over Sercos, it synchronizes axes, tracks process states, and supports deterministic motion sequences in industrial automation.

The current control loop updates every 125 µs, allowing the drive to correct motor torque almost eight thousand times per second. Network synchronization can be tightened to a minimum Sercos cycle of 1000 µs, so position and velocity data remain time-aligned across multiple axes. The unit operates from a single 24 VDC supply and uses only 9 W while the logic circuits and single-line display are active. Four membrane keys beneath the display allow local parameter navigation and fault acknowledgment. Control electronics sample analog encoder inputs through a 12-bit converter, while a 120 Ω differential input resistance helps limit signal reflections and 11.6 V at up to 500 mA is available to power the encoder. Digital interfaces include eight inputs rated at 24 V and 3 mA each, along with four transistor outputs that can source 24 V at 0.5 A for contactors or signal lights.

An inrush circuit holds the input surge to 6 A and limits its duration to 60 ms, which helps protect upstream supplies during power-up. For discrete control tasks, the integrated relay provides Form C switching at 24 V / 1 A, removing the need for a separate relay in many panels. Cabinet installers can secure the fiber connectors without damage by applying a tightening torque of 0.6 Nm to each screw. These features support stable startup behavior, local signal handling, and secure installation inside the drive assembly.