Product Description:

The CDB01.1C-S3-EN1-EN2-EN2-NNN-NN-S-NN-FW is a plug-in control section produced by Bosch Rexroth Indramat for the CDB Control Units series. Installed in modular drive controllers, the unit handles axis processing and field communication so that servo amplifiers can execute coordinated motion sequences in automated machinery. It serves as the command and interface layer inside the host power unit rather than as a standalone drive. It also maintains encoder excitation and preserves captured input states during brief brownouts, helping axes resume normal control when bus voltage returns.

The card manages 2 axes and links to master controllers through SERCOS III, allowing deterministic update rates over Ethernet. Each axis accepts discrete commands via digital channels rated at 24 V / 3 mA, while actuator signals are returned through outputs rated at 24 V / 0.5 A. An RS-232 diagnostic port supports transmissions up to 115 kBaud for setup and service access. Position feedback versatility comes from the EN1 resolver interface, which drives the resolver with 18.2 Vpp at 4 kHz, and from the EN2 incremental encoder supply, which provides 5.0 V with a continuous 350 mA source. A maximum pulse width of 60 ms is tolerated on the differential capture inputs, preventing time-out during slow sensor transitions. Safety technology is not integrated, so external hardware must be used where risk reduction is required.

The controller draws only 9 W at idle, limiting cabinet thermal load, yet starts with an inrush of 6 A, so upstream fusing must allow short transients. Analog monitor channel OA1 sources 5 V / 1 mA for value scaling to external meters or monitoring circuits. For device interlocking, an onboard relay is rated at 24 V DC / 1 A, enabling direct switching of contactors or external safety relays. This arrangement lets the control section exchange low-level status signals without drawing additional load from the feedback interfaces.