Product Description:

The CDB01.1C-S3-ENS-ENS-ENS-MA1-S2-S-NN-FW control unit is produced by Bosch Rexroth Indramat as part of the CDB Control Units series. It functions as an interface module within IndraDrive servo systems, conditioning encoder, analog, and serial signals so downstream drives receive clean, time-synchronized data. By combining these channels on one board, the unit reduces the need for separate interface hardware in packaging, printing, and material-handling equipment. This arrangement also helps keep signal routing compact inside multi-axis cabinets.

On the ENS encoder channels, the board uses a cutoff frequency of 500 kHz, which sets the upper limit for incremental pulse filtering. The receiver input has 120 Ω differential termination and can source up to 500 mA from a regulated 11.6 V DC rail. Under idle conditions, the card dissipates only 9 W, which helps limit cabinet heat buildup. The MA1 analog input path has a bandwidth of 1 kHz, along with 1000 kΩ input impedance and 5 mV per increment resolution, and its driver stage supports a 1 kΩ load. A sample-and-hold converter maintains stable acquisition when input pulses last up to 60 ms. The S2 low-side driver supplies 0.5 A for auxiliary actuators.

The analog output channel has a conversion time of 10 µs, allowing control values to update with very little delay. For host communication, the unit includes an asynchronous port with a peak data rate of 115 kBaud over cables up to 15 m. Network connectors on the S3 interface use an RJ-45, 8-pin layout, which supports standard shielded cable routing in control cabinets. Initial power-up causes a typical inrush current of 6 A, an important value for selecting upstream protection. The mix of serial communication, encoder handling, and analog I/O lets the control unit serve several signal paths from one location in the drive assembly.