Product Description:

The CDB01.1C-S3-ENS-ENS-ENS-NNN-NN-S-NN-FW is a plug-in control section from Bosch Rexroth Indramat's CDB Control Units series. Installed inside a Rexroth converter, it processes motion commands, interprets encoder feedback, and relays real-time data to the drive so that motors follow programmed profiles in automated machinery and production cells. It serves as the internal control interface that links command processing, feedback evaluation, and drive coordination in closed-loop motion systems. This arrangement helps the converter respond quickly to changing axis demands during indexing, positioning, and synchronized machine movement.

The module exchanges cyclic setpoints with higher-level PLCs through SERCOS III, a fiber-optic network that provides deterministic timing for coordinated axes. Its sampling chain uses a 12-bit A/D converter, giving 4096 discrete steps for current and position loops. Velocity inputs over its dedicated TTL port are filtered to a cutoff of 500 kHz, while the base electronics draw only 9 W during operation. When DC power is first applied, the card can momentarily pull an inrush current of 6 A. Encoder supplies support simultaneous operation of optical or magnetic transducers that use HIPERFACE, EnDat 2.1, 1 Vpp, or 5 V TTL formats.

Three feedback sockets provide 3 independent encoder interfaces for closed-loop control of gantry or spindle pairs, and each incoming pulse is limited to a maximum width of 60 ms to prevent erroneous latching. Digital command channels load the opto-isolators with 24 V, 3 mA, helping maintain logic clarity on long cable runs. Additional safeguards include 120 ohm input termination for differential lines and relay contacts for field-side interlocks. The unit does not include integrated safety technology, so external STO or category-rated devices are required when personnel protection is needed.