Product Description:

The CDB01.1C-S3-ENS-ENS-NNN-MA1-NN-S-NN-FW control unit is produced by Bosch Rexroth Indramat and belongs to the CDB Control Units series. Installed in a Rexroth drive stack, it supervises motion commands and gathers high-resolution position data for industrial automation axes. By combining network communication, encoder evaluation, and analog I/O in one plug-in module, the device reduces cabinet wiring and supports coordination between multi-axis servo drives on factory lines.

Network integration is handled through the SERCOS III protocol, allowing deterministic cyclic data exchange with drive controllers. Electrical signaling on this port follows the IEEE 802.3u 100Base-TX standard and reaches remote modules over copper links up to 100 m long when standard shielded industrial Ethernet cable is used. Both SERCOS sockets use RJ-45, 8-pin connectors, so existing plant wiring can be reused without special adapters. For position feedback, the board has two ENS encoder interfaces, and each socket uses a D-Sub 15 female connector that converts incoming sine-cosine or TTL tracks with 12-bit resolution per sample, giving the drive detailed angular data during motion.

In addition to the ENS paths, the module carries an MA1 measurement channel that uses the same connector style. This circuit provides two differential inputs and two analog outputs for tasks such as load-cell monitoring or analog speed override. Each ENS port supplies its transducer with 11.6 VDC and can source up to 500 mA, removing the need for external power taps on most linear or rotary scales. TTL reference signals are accepted up to 400 kHz, so high-speed spindles can accelerate without losing incremental counts. For service diagnostics, a built-in asynchronous interface streams parameter data at 115 kBaud, allowing service software to access drive parameters through a simple serial link.