Product Description:

The CDB01.1C-SE-ENS-ENS-MEM-MA1-L1-S-NN-FW is a modular drive control unit produced by Bosch Rexroth Indramat as part of the CDB Control Units series. Intended for IndraDrive automation, the unit houses axis-specific processing electronics that exchange position, velocity, and diagnostic data between servo drives and higher-level motion controllers. In industrial installations, it serves as the interface for encoder feedback, safety interlocks, and real-time command transfer across coordinated multi-axis systems. Its modular format also lets it work with compatible IndraDrive hardware in centralized control cabinets.

The controller supports 2 x ENS encoder inputs, allowing two axes to feed digital sinusoidal feedback directly into the drive. These inputs operate at 12 V, and the unit can process encoder data in either absolute or incremental form. Command traffic to and from the parent PLC uses the SERCOS II fiber-optic ring, which supports deterministic 62.5 µs cycle times. Internal consumption is limited to 9 W, while initial energization can draw an inrush current of 6 A. The unit also uses a starting lockout function that blocks torque-producing signals until encoder presence and wiring checks pass.

The integrated MA1 module adds two analog input channels and two analog output channels. Each input has an impedance of 1000 kΩ, which helps prevent source loading, and the conversion stage resolves process signals into 4096 discrete levels. On the output side, the channels can source up to 10 mA for external analog devices. Pulse-type references are accepted with a maximum width of 60 ms, which suits slower edge-triggered tasks such as homing sensors. When an emergency stop is requested, the unit applies a Category 0 stop to remove drive power without delay while retaining diagnostic data for the higher-level controller.