Product Description:

The CDB01.1C-S3-EN1-EN1-NNN-MA1-NN-S-NN-FW control unit is manufactured by Bosch Rexroth Indramat within the CDB Control Units series. It is a plug-in controller module that supplies communication links, encoder handling, and analog I/O to drive inverters so that motion axes can be coordinated in industrial automation cells. By consolidating signal processing and network connectivity, the board reduces wiring complexity and enables deterministic command execution inside packaging lines, material handling equipment, and assembly machines.

The basic board draws 9 W during normal operation, so thermal loading inside the drive rack remains low. Command traffic is exchanged over SERCOS III, and the network port is an RJ-45, 8-pin connector that accepts standard industrial Ethernet patch leads. Two independent feedback ports identified as 2x EN1 accept signals from supported encoders, while resolver or HSF formats are also recognized. Typical inrush demand peaks at 6 A, and the surge lasts no more than 60 ms, which helps size upstream circuit protection. After stabilization, the module conditions encoder feedback and routes position words directly to the drive control core.

For feedback power, the control unit provides 8 V to the encoder terminals, while the resolver winding receives 18.2 Vpp at 4 kHz, allowing absolute rotor angle reconstruction. The MA1 option extends signal conditioning with two differential input channels rated at ±10 V and two voltage outputs over the same span. Both the inputs and outputs share 12 bits of resolution, giving 4096 discrete levels for closed-loop command values. This arrangement supports analog reference exchange and status signaling without requiring a separate interface board. These analog resources complement the digital communication functions, forming a single-card solution for drive control tasks without external breakout hardware.