Product Description:

The CDB01.1C-PB-EN1-EN1-NNN-NNN-S2-S-NN-FW is a control section produced by Bosch Rexroth Indramat for the CDB Control Units series. Positioned between the drive power stage and higher-level automation, this component handles command processing, communication, and feedback for industrial servo axes. It facilitates coordinated motion sequences in multi-axis machinery by interpreting feedback signals and relaying setpoint data to the power modules. It also maintains the deterministic update cycles required in packaging, printing, and material-handling lines.

This unit is configured for double-axis operation, so a single control card supervises two individual drive channels without extra hardware. Each axis is equipped with 2 encoder interfaces, allowing simultaneous processing of primary feedback and an auxiliary measuring system when precise position correlation is necessary. Drive coordination data is exchanged over the PROFIBUS fieldbus, which permits cyclic telegrams and diagnostic messaging inside heterogeneous control architectures. When an encoder based on high-speed HSF signals is connected, its analog path is filtered at 100 kHz to preserve edge fidelity while reducing aliasing. The amplitude of those differential HSF signals is regulated to 1.0 V, matching the sensitivity of the internal comparators and preventing overdriving the receiver circuitry.

The HSF encoder line receives power directly from the control card at 8 VDC, and the electronics can source up to 250 mA to cover cable losses on long runs. Resolver feedback is also supported; the excitation winding is driven with 18.2 Vpp at 4 kHz while drawing a typical 70 mA, enabling noise-immune angle calculation in harsh environments. Functional safety is implemented through the Safe Motion module, which uses a D-Sub 9-pin female connector for hard-wired channels. Each input is monitored at 24 V / 3 mA, and motion inhibition outputs are rated for 24 V / 0.5 A. An internal relay can also switch DC 24 V at 1 A to isolate drive enable circuits during a fault.