CDB01.1C-S3-ENS-ENS-ENS-ENS-NN-S-NN-FW Bosch Rexroth Indramat
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MPN: R911327669
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The Bosch Rexroth Indramat CDB01.1C-S3-ENS-ENS-ENS-ENS-NN-S-NN-FW is a control unit from the CDB Control Units series, featuring 2 axis control and SERCOS III communication. It supports 4 ENS encoder interfaces, offers an analog input range of ±10 V, and has an analog output range of 0 to +5 V. The unit provides encoder supply at 11.6 VDC and digital output current up to 500 mA.
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Product Description:
The CDB01.1C-S3-ENS-ENS-ENS-ENS-NN-S-NN-FW control section is manufactured by Bosch Rexroth Indramat for the CDB Control Units series. The module acts as the central logic layer inside modular drive packages, coordinating two motion axes and passing setpoints between the drive power stage and higher-level automation controllers. By combining SERCOS-based networking, encoder evaluation, and programmable I/O on one plug-in board, the unit supports precise position, velocity, and torque regulation in industrial handling, packaging, and general automation equipment. This arrangement lets the control section manage command processing and feedback handling without requiring separate interface modules for basic multi-axis tasks.
An analog front end accepts command voltages within a ±10 V span, while the dedicated output channel returns feedback from 0 to +5 V for controllers that use single-ended reference levels. The controller draws only 9 W of base power, which helps limit cabinet heat when the axes are idle. The control section handles an axis count of 2, and each channel receives position data through one of the four ENS encoder ports. The control bus uses SERCOS III, with two eight-pin RJ-45 sockets for network connection. An RS-232 service lead can extend to 15 m, digital outputs can source up to 500 mA, and a separate 500 mA rail supplies the encoders through a D-Sub 15 female connector.
The logic section tolerates an inrush of 6 A when the DC bus is first energized. After startup, it provides an 11.6 VDC regulated supply to the sensor connectors so connected transducers remain within their permitted operating range. Real-time traffic is carried over a 100Base-TX Ethernet physical layer inside the SERCOS telegram, supporting deterministic data exchange across the network. The device also propagates pulses with a maximum width of 60 ms to downstream drivers, which helps prevent latch-up in fast-reacting safety circuits. The two network ports are arranged in a daisy-chain topology to simplify line expansion, and the four ENS encoder interfaces share the same supply rail to keep wiring straightforward.
