Product Description:

The CDB01.1C-S3-EN2-EN2-NNN-MA1-NN-S-NN-FW is a plug-in control section produced by Bosch Rexroth Indramat for use in the CDB Control Units series. Acting as the command layer inside an IndraDrive stack, it manages fieldbus traffic, encoder feedback, and low-level I/O so the attached power module can regulate servo or induction motors. It is intended for use as the removable control portion of a modular drive assembly. It handles real-time parameter processing and motion commands within the drive, separating control functions from the power stage. Because the control section is separate from the power module, signal handling and motor current delivery remain divided between the two assemblies.

This version communicates over the SERCOS III real-time Ethernet protocol through a built-in 100Base-TX interface that terminates on a single RJ-45, 8-pin jack. Machine status signals arrive on 7 digital inputs, while actuator commands leave through 4 combined I/O outputs that can be parameterized for sourcing or sinking logic. The Ethernet port provides the physical connection for the network, while the local I/O supports direct interaction with switches, sensors, and simple actuators. The base analog output stage supplies 5 V at 1 mA for an external voltage reference, and the network cycle stays synchronized with encoder updates. Position data from two encoder channels using EnDat 2.1, 1 Vpp, or 5 V TTL signals reaches the drive at deterministic intervals for direct handling of enable, fault reset, and velocity setpoints.

The logic stages are powered from a nominal DC 24 V field supply, and the card draws up to 1.1 A when every sensor channel is active. This field supply powers the logic and interface circuits independently from the motor power section. Two differential MA1 analog inputs and two analog outputs share a converter with 12 bit resolution, which supports consistent update quality for external reference and monitoring signals. Each En2 encoder port sources 350 mA into 35 ohm loads, and a sense circuit stabilizes the 5.0 V reference supplied to connected feedback devices. For auxiliary loads, a form-C relay with contacts rated at DC 24 V, 1 A can switch brakes, clutches, or contactors directly.