Product Description:

The CDB01.1C-S3-EN2-EN2-NNN-MA1-L2-S-NN-FW is a plug-in motion control card from Bosch Rexroth Indramat that belongs to the CDB Control Units series. Installed inside IndraDrive power sections, the card houses processing and interface circuits that close the position and velocity loops for connected servo axes. By combining fieldbus, safety, and analog expansion functions on one carrier, it coordinates industrial automation tasks such as multi-axis packaging, material handling, and machining.

Its control core simultaneously manages two drives through a dual-axis architecture, allowing synchronized interpolation without a second board. Each axis receives incremental and absolute position data through twin encoder channels that accept EnDat 2.1, 1 Vss, and TTL signals for high-resolution feedback over differential lines. Auxiliary logic on the board is powered by a dedicated EN2 rail that must be maintained at 5 V. For hard-wired status reporting, the L2 acknowledgment relay is rated for DC 24 V / 1 A, while the opto-isolated control input draws only 24 V at 3 mA, minimizing load on field terminals. Integrated functional safety is delivered by the Safe Torque Off circuit, and its performance is certified to SIL3 / Cat. 3 PL e for immediate torque removal without external contactors.

In addition to fieldbus control, the board carries an MA1 plug-in module that offers 12-bit conversion accuracy over a ±10 V linear range, with two analog inputs and two analog outputs for process variables. Real-time motion commands and status words move across the Sercos III fiber ring, while an onboard RS-232 port remains available for parameter backup or local access. A single normally open relay contact provides general-purpose signaling, and the Option-4 analog I/O extension can be installed on the same carrier. Safe signals enter through the L2 terminal block, which uses the same low-load input characteristics as the control input. Despite the numerous connectors, the aluminum carrier measures only 322.6 × 49.5 × 103 mm, so it fits in compact control cabinets beside IndraDrive converters.